NSX for vSphere 6.2.6 Release Notes

Document updated 21 February 2017
NSX for vSphere 6.2.6   |   Released 02 February 2017  |   Build 4977495

What's in the Release Notes

The release notes cover the following topics:

What's New

See what's new and changed in NSX 6.2.6, 6.2.5, 6.2.4, 6.2.3, 6.2.2, 6.2.1 and 6.2.0.

See Important information about NSX 6.2.3.

New in 6.2.6

The 6.2.6 release primarily contains bug fixes for the multi-cipher issue and the OpenSSL upgrade. In 6.2.6, NSX Edge OpenSSL package is updated to 1.0.2j. For details, see the Resolved Issues section.

New in 6.2.5 (Click to Expand or Collapse)

New in 6.2.4 (Click to Expand or Collapse)

New in 6.2.3 (Click to Expand or Collapse)

Important Information about NSX for vSphere 6.2.3: For customers who have installed NSX 6.2.3 or 6.2.3a, VMware recommends installing NSX 6.2.4 or later to address critical bug fixes.

New in 6.2.2 (Click to Expand or Collapse)

New in 6.2.1 (Click to Expand or Collapse)

New in 6.2.0 (Click to Expand or Collapse)

Minimum Recommended Versions, System Requirements and Installation

The table below lists minimum recommended and required versions of VMware software. This information is current as of the publication date of this document. For the latest recommendations, please refer to VMware knowledge base article 2144295

Product or component Minimum recommended version
NSX for vSphere 6.2.2

For customers who use SSL VPN, VMware advises a minimum recommended release of NSX for vSphere 6.2.4 and a review of CVE-2016-2079.

For customers who plan to use logical switching and vSphere 6.0U2, VMware advises a minimum recommended release of NSX for vSphere 6.2.4 and a review of Duplicate VTEPs in ESXi hosts after rebooting vCenter Server (KB 2144605).

vSphere 5.5U3, or 6.0U2

Note: There is a known issue with vSphere 6.0 and NSX objects. For more information, see VMware Knowledge base article 2144605, "Duplicate VTEPs in ESXi hosts after rebooting vCenter Server".

Guest Introspection Guest Introspection-based features in NSX are compatible with specific VMware Tools (VMTools) versions. To enable the optional Thin Agent Network Introspection Driver component packaged with VMware Tools, you must upgrade to one of:
  • VMware Tools 10.0.8 and later to resolve Slow VMs after upgrading VMware Tools in NSX / vCloud Networking and Security (VMware knowledge base article 2144236)

  • VMware Tools 10.0.9 and later for Windows 10 support

vRealize Orchestrator NSX-vRO plugin 1.0.3 or later

Note: NSX 6.2.x is not compatible with vSphere 6.5. See the VMware Product Interoperability Matrix for more interoperability information.


For installation instructions, see the NSX Installation Guide or the NSX Cross-vCenter Installation Guide. For the complete list of NSX installation prerequisites, see the System Requirements for NSX section in the NSX Installation Guide.

Deprecated and Discontinued Functionality

End of Life and End of Support Warnings

For information about NSX and other VMware products that must be upgraded soon, please consult the VMware Lifecycle Product Matrix. Upcoming end-of-support dates include:

  • vCloud Networking and Security will reach End of Availability (EOA) and End of General Support (EOGS) on September 19, 2016. (See also VMware knowledge base article 2144733.) (See also VMware knowledge base article 2144620.)
  • NSX for vSphere 6.1.x will reach End of Availability (EOA) and End of General Support (EOGS) on January 15, 2017. (See also VMware knowledge base article 2144769.)
  • As of NSX 6.2.3, the NSX Data Security feature has been deprecated. In NSX 6.2.3, you can continue to use this feature at your discretion, but be aware that this feature will be removed from NSX in a future release.

  • Web Access Terminal (WAT) is being deprecated and will not be included in a future maintenance release. VMware recommends using the full access client with SSL VPN deployments for improved security.

Unsupported controller commands are no longer shown

Please review the CLI guide for the complete list of supported commands. You should only use commands which are documented in this guide. The join control-cluster command is not a supported command on NSX for vSphere. See also VMware knowledge base article 2135280.

TLS 1.0 support has been deprecated as of NSX 6.2.3

In the NSX VPN, IPsec, and Load Balancer cipher suites, TLS 1.0 support has been deprecated as of NSX 6.2.3. For information on changes in cipher support, see VMware knowledge base article 2147293.

Upgrade Notes

  • Downgrades are not supported:

    • Always capture a backup of NSX Manager before proceeding with an upgrade.

    • Once NSX has been upgraded successfully, NSX cannot be downgraded.

  • Upgrading Edge Services Gateway (ESG):
    Starting in 6.2.5, resource reservation is carried out at the time of NSX Edge upgrade. When vSphere HA is enabled on a cluster having insufficient resources, the upgrade operation may fail due to vSphere HA constraints being violated.

    To avoid such upgrade failures, perform the following steps before you upgrade an ESG:

    1. Always ensure that your installation follows the best practices laid out for vSphere HA. Refer to document Knowledge Base article 1002080 .

    2. Use the NSX tuning configuration API:
      PUT https://<NSXManager>/api/4.0/edgePublish/tuningConfiguration
      ensuring that values for edgeVCpuReservationPercentage and edgeMemoryReservationPercentage fit within available resources for the form factor (see table below for defaults).

    The following resource reservations are used by the NSX Manager if you have not explicitly set values at the time of install or upgrade.

    NSX Edge
    Form Factor
    CPU Reservation Memory Reservation
    COMPACT 1000MHz 512 MB
    LARGE 2000MHz 1024 MB
    QUADLARGE 4000MHz 2048 MB
    X-LARGE 6000MHz 8192 MB

  • Disable vSphere's Virtual Machine Startup option where vSphere HA is enabled and Edges are deployed. After you upgrade your 6.2.4 or earlier NSX Edges to 6.2.5 or later, you must turn off the vSphere Virtual Machine Startup option for each NSX Edge in a cluster where vSphere HA is enabled and Edges are deployed. To do this, open the vSphere Web Client, find the ESXi host where NSX Edge virtual machine resides, click Manage: Settings, and, under Virtual Machines, select VM Startup/Shutdown, click Edit, and make sure that the virtual machine is in Manual mode (that is, make sure it is not added to the Automatic Startup/Shutdown list).

  • New Before upgrading to NSX 6.2.5 or later, make sure all load balancer cipher lists are colon separated. If your cipher list uses another separator such as a comma, make a PUT call to https://nsxmgr_ip/api/4.0/edges/EdgeID/loadbalancer/config/applicationprofiles and replace each <ciphers> list in <clientSsl> and <serverSsl> with a colon-separated list. For example, the relevant segment of the request body might look like the following. Repeat this procedure for all application profiles:

  • To upgrade to NSX 6.2.4, you must perform a full NSX upgrade including host cluster upgrade (which upgrades the host VIBs to 6.2.4). For instructions, see the NSX Upgrade Guide including the Upgrade Host Clusters to NSX 6.2 section.

  • Controller disk layout: New installations of NSX 6.2.3 or later will deploy NSX Controller appliances with updated disk partitions to provide extra cluster resiliency. In previous releases, log overflow on the controller disk might impact controller stability. In addition to adding log management enhancements to prevent overflows, the NSX Controller appliance has separate disk partitions for data and logs to safeguard against these events. If you upgrade to NSX 6.2.3 or later, the NSX Controller appliances will retain their original disk layout.
  • Upgrade paths:

    • Upgrade path from NSX 6.x: The VMware Product Interoperability Matrix provides details about the upgrade paths from VMware NSX. Cross-vCenter NSX upgrade is covered in the NSX Upgrade Guide.

    • Upgrade path from vCNS 5.5.x:

      • Using the NSX upgrade bundle you may upgrade directly from VMware vCloud Networking and Security (vCNS) 5.5.x to NSX 6.2.x. For instructions, see the NSX Upgrade Guide, in the section, vCloud Networking and Security to NSX Upgrade. This section also includes instructions for upgrading vCNS 5.5.x to NSX in a vCloud Director environment. A separate guide, the NSX Upgrade Guide for vShield Endpoint, includes instructions for upgrading vCNS 5.5.x to NSX 6.2.x if you are using vShield Endpoint for anti-virus protection only.

      • If you have virtual wires in your environment, you must update your host clusters. Once this is done, the virtual wires are renamed to logical switches. See Update Host Clusters for instructions.

    • There is no support for upgrades from NSX 6.1.6 to NSX 6.2.0, 6.2.1, or 6.2.2.

    • There is no support for upgrades from NSX 6.1.5 to NSX 6.2.0. VMware recommends upgrading from 6.1.5 to 6.2.4 or later to get the latest security updates.

  • To validate that your upgrade to NSX 6.2.x was successful see knowledge base article 2134525.

  • Upgrading as part of a wider VMware product upgrade: When you are upgrading NSX in context with other VMware product upgrades, such as vCenter and ESXi, it is important to follow the supported upgrade sequence documented in knowledge base article 2109760.

  • Partner services compatibility: If your site uses VMware partner services for guest introspection or network introspection, you must review the  VMware Compatibility Guide before you upgrade, to verify that your vendor's service is compatible with this release of NSX.
  • Known issues affecting upgrades: See the section, Installation and Upgrade Known Issues, later in this document, for a list of known upgrade-related issues.

  • New system requirements: For the memory and CPU requirements while installing and upgrading NSX Manager, see the System Requirements for NSX section in the NSX 6.2 documentation.

  • Set Correct Cipher version for Load Balanced Clients that use TLS 1.0: This affects vROPs pool members that use TLS version 1.0. If the servers, whose traffic is being load-balanced, use this version, you must set a monitor extension value explicitly with the "ssl-version=10" setting in the NSX Load Balancer. See the NSX Administrator Guide.

                  "expected" : null,
                  "extension" : null,
                  "send" : null,
                  "maxRetries" : 2,
                  "name" : "sm_vrops",
                  "url" : "/suite-api/api/deployment/node/status",
                  "timeout" : 5,
                  "type" : "https",
                  "receive" : null,
                  "interval" : 60,
                  "method" : "GET"

  • Maximum number of NAT rules: For NSX Edge versions prior to 6.2, a user could configure 2048 SNAT and 2048 DNAT rules separately, giving a total limit of 4096 rules. Since NSX Edge version 6.2 onwards, a limit is enforced for the maximum allowed NAT rules, based on the NSX Edge appliance size:

      1024 SNAT and 1024 DNAT rules for a total limit of 2048 rules for COMPACT edge.

      2048 SNAT and 2048 DNAT for a total limit of 4096 rules for LARGE edge and QUADLARGE edge.

      4096 SNAT and 4096 DNAT rules for a total limit of 8192 rules for XLARGE edge.

    During an NSX Edge upgrade to version 6.2, any existing COMPACT edge whose total NAT rules (sum of SNAT and DNAT) exceeds the limit 2048 will fail validation, resulting in an upgrade failure. In this scenario, the user will need to change the appliance size to LARGE, QUADLARGE and retry the upgrade.

  • Behavior change in redistribution filters on distributed logical router and Edge Services Gateway: Starting in the 6.2 release, redistribution rules in the DLR and ESG work as ACLs only. That is, if a rule is an exact match, the respective action is taken.

  • VXLAN tunnel ID: Before upgrading to NSX 6.2.x, you must make sure your installation is not using a VXLAN tunnel ID of 4094 on any tunnels. VXLAN tunnel ID 4094 no longer available for use. To assess and address this follow these steps:

    1. In vCenter, navigate to Home > Networking and Security > Installation and select the Host Preparation tab.
    2. Click Configure in the VXLAN column.

    3. In the Configure VXLAN Networking window, set the VLAN ID to a value between 1 and 4093.

  • Reset vSphere web client: After upgrading NSX Manager, you must reset the vSphere web client server as explained in the NSX Upgrade documentation. Until you do this, the Networking and Security tab may fail to appear in the vSphere web client. You also may need to clear your browser cache or history.

  • Stateless environments: NSX upgrades in a stateless host environment use new VIB URLs: In NSX upgrades in a stateless host environment, the new VIBs are pre-added to the Host Image profile during the NSX upgrade process. As a result, NSX on stateless hosts upgrade process follows this sequence:

    1. Manually download the latest NSX VIBs from NSX Manager from a fixed URL.

    2. Add the VIBs to the host image profile.

    Prior to NSX 6.2.0, there was a single URL on NSX Manager from which VIBs for a certain version of the ESX Host could be found. (Meaning the administrator only needed to know a single URL, regardless of NSX version.) In NSX 6.2.0 and later, the new NSX VIBs are available at different URLs. To find the correct VIBs, you must perform the following steps:

    • Find the new VIB URL from https://<NSX-Manager-IP>/bin/vdn/nwfabric.properties.
    • Fetch VIBs of required ESX host version from corresponding URL.
    • Add them to host image profile.
  • Autosaved drafts and Service Composer: In NSX 6.2.3 and later, you can disable the auto draft feature by setting autoDraftDisabled to true. Manually configured settings are maintained during the upgrade. Disabling the auto drafts feature before making large numbers of changes to the firewall rules might improve performance, and will prevent previously saved drafts from being overwritten. You can use the following API call to set the property autoDraftDisabled to true in the global configuration:

    1. Get the existing global firewall configuration (GlobalConfiguration):
      GET https://NSX-Manager-IP-Address/api/4.0/firewall/config/globalconfiguration
      Note that a GET will not show the autoDraftDisabled field.
    2. Use a PUT call to set the property autoDraftDisabled to true in the global configuration:
      PUT https://NSX-Manager-IP-Address/api/4.0/firewall/config/globalconfiguration
      with a request body that includes:
  • Host may become stuck in the installing state: During large NSX upgrades, a host may become stuck in the installing state for a long time. This can occur due to issues uninstalling old NSX VIBs. In this case the EAM thread associated with this host will be reported in the VI Client Tasks list as stuck.
    Workaround: Log into vCenter using the VI Client. Right click on the stuck EAM task and cancel it. From the vSphere Web Client, issue a Resolve on the cluster. The stuck host may now show as InProgress. Log into the host and issue a reboot to force completion of the upgrade on that host.

Known Issues

Known issues are grouped as follows:

General Known Issues

Issue 1708769: Increased latency on SVM (Service VM) after snapshot in NSX

This issue occurs because running a snapshot of a Service VM (SVM) can cause added network latency. Snapshot is sometimes invoked by backup applications running in the environment.

Workaround: Refer to VMware knowledge base article 2146769.

Issue 1700980: For security patch CVE-2016-2775, a query name which is too long can cause a segmentation fault in lwresd

NSX 6.2.4 has BIND 9.10.4 installed with the product, but it does not use lwres option in named.conf, hence the product is not vulnerable.

Workaround: As the product is not vulnerable, no workaround is required.

Issue 1710624: Windows 2008 event log server is added as "TYPE" of "WIN2K3", if serverType is not specified in REST API request body

If you create EventLog server API request, the server will be added as "TYPE" of "WIN2K3". If you use EventLog server only for IDFW, IDFW may not work correctly.

Workaround: Add serverType to REST API request body. For example:


Issue 1716328: Removing host that is in maintenance mode can result in later cluster preparation failure

If an administrator places an NSX-enabled ESXi host in maintenance mode and removes it from an NSX-prepared cluster, NSX fails to delete its record of the ID number of the removed host. After the installation is in this state, if there is another host with same ID in another cluster or if this host is being added to another cluster, the cluster preparation process will fail for that cluster.

Workaround: Restart NSX Manager or run the following API to get rid of the extra entry. Perform a PUT of the API method,

Issue 1659043: Service Status for Guest Introspection reported as "Not Ready" when NSX Manager to USVM communication times out

An error message similar to "PLAIN login refused: user 'usvm-admin-host-14' - invalid credentials" may be reported for the Guest Introspection Universal SVM when the expected password change process with NSX Manager on the internal message bus (rabbit MQ) does not succeed.

Workaround: To re-establish connectivity between the USVM and NSX Manager, restart the USVM or manually delete it and then select the Resolve button on the Service Composer UI to prompt a redeploy of the USVM for the affected host only.

Issue 1662842: Guest Introspection: Connectivity lost between MUX and USVM when trying to resolve unresolvable Windows SIDs
Guest Introspection service will go into a warning state, with each Guest Introspection going in and out of a warning state. Until the Guest Introspection VM reconnects, network events will not be delivered to the NSX Manager. This will affect both Activity Monitoring and ID Firewall in the case that logon events are detected through the Guest Introspection path.

Workaround: To return Guest Introspection to a stable state, Guest Introspection VMs must be configured to ignore lookups for these well-known SIDs. This is achieved by updating a configuration file on each Guest Introspection VM and then restarting the service. In addition, Active Directory log scraping can be used as a workaround for detecting logon events for ID Firewall.

Steps to ignore SID lookups for unresolvable SIDs:
  1. Login to Guest Introspection VM.
  2. Edit the file at /usr/local/usvmmgmt/config/ignore-sids.lst.
  3. Append the following 2 lines:
  4. Save and close the file.
  5. Restart the Guest Introspection service with command:
    rcusvm restart.

Issue 1558285: Deleting cluster with Guest Introspection from Virtual Center results in null pointer exception
Services such as Guest Introspection must be removed first before a cluster is removed from VC

Workaround: Delete the EAM Agency for the service deployment with no associated cluster.

Issue 1629030: The packet capture central CLI (debug packet capture and show packet capture) requires vSphere 5.5U3 or higher
These commands are not supported on earlier vSphere 5.5 releases.

Workaround: VMware advises all NSX customers to run vSphere 5.5U3 or higher.

Issue 1568180: Feature list incorrect for NSX when using vCenter Server Appliance (vCSA) 5.5
You can view the features of a license in the vSphere Web Client by selecting the license and clicking Actions > View Features. If you upgrade to NSX 6.2.3, your license is upgraded to an Enterprise license, which enables all features. However, if NSX Manager is registered with vCenter Server Appliance (vCSA) 5.5, selecting View Features will display the list of features for the license used before the upgrade, not the new Enterprise license.

Workaround: All Enterprise licenses have the same features, even if they are not displayed correctly in the vSphere Web Client. See the NSX Licensing Page for more information.

Issue 1477280: Cannot create hardware gateway instances when no controller is deployed
Controllers must be deployed before any hardware gateway instances are configured. If controllers are not deployed first, the error message "Failed to do the Operation on the Controller" is shown.

Workaround: None.

Issue 1491275: NSX API returns JSON instead of XML in certain circumstances
On occasion, an API request will result in JSON, not XML, being returned to the user.

Workaround: Add Accept: application/xml to the request header.

Installation and Upgrade Known Issues

Issue 1768144: Old NSX Edge appliance resource reservations that exceed new limits may cause failure during upgrade or redeployment
In NSX 6.2.4 and earlier, you could specify an arbitrarily large resource reservation for an NSX Edge appliance. NSX did not enforce a maximum value.
 After NSX Manager is upgraded to 6.2.5 or later, if an existing Edge has resources reserved (especially memory) that exceed the newly enforced maximum value imposed for the chosen form factor, it would fail during Edge upgrade or redeploy (which would trigger an upgrade). For example, if the user has specified a memory reservation of 1000MB on a pre-6.2.5 LARGE Edge and, after upgrade to 6.2.5 or later, changes the appliance size to COMPACT, the user-specified memory reservation will exceed the newly enforced maximum value, in this case 512 for a COMPACT Edge, and the operation will fail.
See Upgrading Edge Service Gateway (ESG) for information on recommended resource allocation starting in NSX 6.2.5.

Workaround: Use the appliance REST API: PUT https://<NSXManager>/api/4.0/edges/<edge-Id>/appliances/ to reconfigure the memory reservation to be within values specified for the form factor, without any other appliance changes. You can change the appliance size after this operation completes.

Issue 1730017: Upgrades from 6.2.3 to 6.2.4 do not show a version change for Guest Introspection
As the 6.2.3 Guest Introspection module is the latest version available, the version after a 6.2.4 upgrade remains unchanged. Note that upgrades from earlier NSX releases may show a version change to 6.2.4

Workaround: This does not affect any functionality.

Issue 1685894: VMs migrated (with DRS) from hosts with installed newer release VIBs to hosts with older release VIBs lose network connectivity
This scenario is not supported as NSX does not support downgrades.

  • With a DRS-enabled cluster, change DRS mode to Manual during the upgrade until all hosts in the cluster are upgraded to the newer NSX version.

  • On a non-DRS-enabled cluster, do not migrate VMs created or powered off/on from a host with newer VIB version to a host with older VIB version.

Issue 1683879: Upgrade to NSX 6.2.3 or later may fail on hosts with less than 8 GB of memory​

NSX 6.2.3 and later requires a minimum of 8 GB of memory on prepared hosts running networking and security services. The minimum ESXi 6.0 memory requirement of 4 GB is not sufficient to run NSX.

Workaround: None.

Issue 1673626: Modifying tcpLoose via /api/3.0/edges is not allowed after upgrading from vCloud Networking and Security to NSX ​

After upgrading from vCloud Networking and Security to NSX, you will see an error if you try to modify the tcpLoose setting in this API request: /api/3.0/edges

Workaround: Use tcpPickOngoingConnections setting in the globalConfig section in the API request /api/4.0/firewall/config instead.

Issue 1658720: Enabling DFW for a given cluster would fail for a vCNS to NSX upgrade scenario where the cluster has VXLAN installed and vShield App not installed (or removed before upgrade) in vCNS deployment

This issue occurs because the cluster sync status is not invoked when the hosts are upgraded.

Workaround: Restart NSX Manager.​

Issue 1600281: USVM Installation Status for Guest Introspection shows as Failed in the Service Deployments tab

If the backing datastore for the Guest Introspection Universal SVM goes offline or becomes inaccessible, the USVM may need to be rebooted or re-deployed to recover.

Workaround:Reboot or re-deploy USVM to recover.

Issue 1660373: vCenter enforces expired NSX license

As of vSphere 5.5 update 3 or vSphere 6.0.x vSphere Distributed Switch is included in the NSX license. However, vCenter does not allow ESX hosts to be added to a vSphere Distributed Switch if the NSX license is expired.

Workaround: Your NSX license must be active in order to add a host to a vSphere Distributed Switch.​

Issue 1569010/1645525: When upgrading from 6.1.x to NSX for vSphere 6.2.3 on a system connected to Virtual Center 5.5, the Product field in the "Assign License Key" window displays the NSX license as a generic value of "NSX for vSphere" and not a more specific version such as "NSX for vSphere - Enterprise."

Workaround: None.

Issue 1465249: Installation status for Guest Introspection shows Succeeded even though the host is offline
After installing Guest Introspection on the cluster that has one host offline, the host that is offline shows Installation Status as Succeeded and Status Unknown.

Workaround: None.

Issue 1636916: In a vCloud Air environment, when the NSX Edge version is upgraded from vCNS 5.5.x to NSX 6.x, Edge firewall rules with a source protocol value of "any" are changed to "tcp:any, udp:any"
As a result, ICMP traffic is blocked, and packet drops may be seen.

Workaround: Before upgrading your NSX Edge version, create more specific Edge firewall rules and replace "any" with specific source port values.

Issue 1660355: VMs which are migrated from 6.1.5 to 6.2.3 will not have support for TFTP ALG
Even though the host is enabled, VMs which are migrated from 6.1.5 to 6.2.3 will not have support for TFTP ALG.

Workaround: Add and remove the VM from the exclusion list or restart the VM, so that new 6.2.3 filter gets created which will have support for TFTP ALG.

Issue 1394287: Adding or removing VMs from a virtual wire does not update IP address set in vShieldApp rules
If an existing vCNS vShield App firewall installation is not upgraded to the NSX distributed firewall in enhanced mode, new VMs with firewall rules based on virtual wires will not have an updated IP address. As a result, these VMs are not protected by the NSX firewall This issue is only seen in the following scenarios:

  • After upgrading the Manager from vCNS to NSX and not switching to DFW Enhanced mode.
  • If you add new VMs to a virtualWire with vshield App rules consuming those virtualwires, these rules will not have the new IP Address set for the new VMs.
  • This will cause the new VMs not protected by vShieldApp.

Workaround: Publish the rule again which will set the new address.

Issue 1474238: After vCenter upgrade, vCenter might lose connectivity with NSX
If you are using vCenter embedded SSO and you are upgrading vCenter 5.5 to vCenter 6.0, vCenter might lose connectivity with NSX. This happens if vCenter 5.5 was registered with NSX using the root user name. In NSX 6.2, vCenter registration with root is deprecated.
Note: If you are using external SSO, no change is necessary. You can retain the same user name, for example admin@mybusiness.mydomain, and vCenter connectivity will not be lost.

Workaround: Reregister vCenter with NSX using the admininstrator@vsphere.local user name instead of root.

Issue 1332563: Shutdown Guest OS for agent VMs (SVA) before powering OFF
When a host is put into maintenance mode, all service appliances are powered-off, instead of shutting down gracefully. This may lead to errors within third-party appliances.

Workaround: None.

Issue 1473537: Unable to power on the Service appliance that was deployed using the Service Deployments view

Workaround: Before you proceed, verify the following:

  • The deployment of the virtual machine is complete.

  • No tasks such as cloning, reconfiguring, and so on are in progress for the virtual machine displayed in VC task pane.

  • In the VC events pane of the virtual machine, the following events are displayed after the deployment is initiated:
    Agent VM <vm name> has been provisioned.
    Mark agent as available to proceed agent workflow.

    In such a case, delete the service virtual machine. In service deployment UI, the deployment is seen as Failed. Upon clicking the Red icon, an alarm for an unavailable Agent VM is displayed for the host. When you resolve the alarm, the virtual machine is redeployed and powered on.

If not all clusters in your environment are prepared, the Upgrade message for Distributed Firewall does not appear on the Host Preparation tab of Installation page
When you prepare clusters for network virtualization, distributed firewall is enabled on those clusters. If not all clusters in your environment are prepared, the upgrade message for Distributed Firewall does not appear on the Host Preparation tab.

Workaround: Use the following REST call to upgrade Distributed Firewall:

PUT https://<nsxmgr-ip>/api/4.0/firewall/globalroot-0/state/<nsxmgr-ip>

Issue 1215460: If a service group is modified after the upgrade to add or remove services, these changes are not reflected in the firewall table
User created service groups are expanded in the Edge Firewall table during upgrade - i.e., the Service column in the firewall table displays all services within the service group. If the service group is modified after the upgrade to add or remove services, these changes are not reflected in the firewall table.

Workaround: Create a new service group with a different name and then consume this service group in the firewall rule.

Issue 1088913: vSphere Distributed Switch MTU does not get updated
If you specify an MTU value lower than the MTU of the vSphere distributed switch when preparing a cluster, the vSphere Distributed Switch does not get updated to this value. This is to ensure that existing traffic with the higher frame size isn't unintentionally dropped.

Workaround: Ensure that the MTU you specify when preparing the cluster is higher than or matches the current MTU of the vSphere distributed switch. The minimum required MTU for VXLAN is 1550.

Issue 1413125: SSO cannot be reconfigured after upgrade
When the SSO server configured on NSX Manager is the one native on vCenter server, you cannot reconfigure SSO settings on NSX Manager after vCenter Server is upgraded to version 6.0 and NSX Manager is upgraded to version 6.x.

Workaround: None.

Issue 1288506: After upgrading from vCloud Networking and Security 5.5.3 to NSX vSphere 6.0.5 or later, NSX Manager does not start up if you are using an SSL certificate with DSA-1024 keysize
SSL certificates with DSA-1024 keysize are not supported in NSX vSphere 6.0.5 onwards, so the upgrade is not successful.

Workaround: Import a new SSL certificate with a supported keysize before starting the upgrade.

Issue 1266433: SSL VPN does not send upgrade notification to remote client
SSL VPN gateway does not send an upgrade notification to users. The administrator has to manually communicate that the SSL VPN gateway (server) is updated to remote users and they must update their clients.

Workaround: Users need to uninstall the older version of client and install the latest version manually.

Issue 1402307: If vCenter is rebooted during NSX vSphere upgrade process, incorrect Cluster Status is displayed
When you do host prep in an environment with multiple NSX prepared clusters during an upgrade and the vCenter Server gets rebooted after at least one cluster has been prepared, the other clusters may show Cluster Status as Not Ready instead of showing an Update link. The hosts in vCenter may also show Reboot Required.

Workaround: Do not reboot vCenter during host preparation.

Issue 1487752: Momentary loss of third-party anti-virus protection during upgrade
When upgrading from NSX 6.0.x to NSX 6.1.x or 6.2.x, you might experience momentary loss of third-party anti-virus protection for VMs. This issue does not affect upgrades from NSX 6.1.x to NSX 6.2.

Workaround: None.

Issue 1498376: Host error message appears while configuring distributed firewall
While configuring distributed firewall, if you encounter an error message related to the host, check the status of fabric feature "ttcom.vmware.vshield.nsxmgr.messagingInfra". If the status is red, perform the following workaround.

Workaround: Use the following REST API call to reset communication between NSX Manager and a single host or all hosts in a cluster.

POST https://<NSX Manager IP>/api/2.0/nwfabric/configure?action=synchronize

        <resourceId>{HOST/CLUSTER MOID}</resourceId>

Issue 1491820: NSX Manager log collects WARN messagingTaskExecutor-7 messages after upgrade to NSX 6.2
After upgrading from NSX 6.1.x to NSX 6.2, the NSX Manager log becomes flooded with messages similar to: WARN messagingTaskExecutor-7 ControllerInfoHandler:48 - host is unknown: host-15 return empty list. There is no operational impact.

Workaround: None.

Issue 1284735: After upgrade from vCNS, cannot place new grouping objects into some upgraded grouping objects
vCNS 5.x supported creation of grouping objects at scopes below GlobalRoot (below the NSX-wide scope). For example, in vCNS 5.x you could create a grouping object as the DC or PG level. By contrast, the NSX 6.x user interface creates such objects under the GlobalRoot, and these newly created grouping objects cannot be added to existing grouping objects that were created at a lower scope (DC or PG) in your pre-upgrade vCNS installation.

Workaround: See VMware knowledge base article 2117821.

Issue 1495969: After upgrading from vCNS 5.5.4 to NSX 6.2.x, the firewall on the Host Preparation tab remains disabled
After upgrading from vCNS 5.5.x to NSX 6.2.x and upgrading all the clusters, the firewall on the Host Preparation tab remains disabled. In addition, the option to upgrade the firewall does not appear in the UI. This happens only when there are hosts that are not part of any prepared clusters in the datacenter, because the VIBs will not be installed on those hosts.

Workaround: To resolve the issue, move the hosts into an NSX 6.2 prepared cluster.

Issue 1495307: During an upgrade, L2 and L3 firewall rules do not get published to hosts
After publishing a change to the distributed firewall configuration, the status remains InProgress both in the UI and the API indefinitely, and no log for L2 or L3 rules is written to the file vsfwd.log.

Workaround: During an NSX upgrade, do not publish changes to the distributed firewall configuration. To exit from the InProgress state and resolve the issue, reboot the NSX Manager virtual appliance.

Issue 1474066: The NSX REST API call to enable or disable IP detection seems to have no effect
If host cluster preparation is not yet complete, the NSX REST API call to enable or disable IP detection (https://<nsxmgr-ip>/api/2.0/xvs/networks/universalwire-5/features) has no effect.

Workaround: Before issuing this API call, make sure the host cluster preparation is complete.

Issue 1479314: NSX 6.0.7 SSL VPN clients cannot connect to NSX 6.2 SSL VPN gateways
In NSX 6.2 SSL VPN gateways, the SSLv2 and SSLv3 protocols are disabled. This means the SSL VPN gateway only accepts the TLS protocol. The SSL VPN 6.2 clients have been upgraded to use the TLS protocol by default during connection establishment. In NSX 6.0.7, the SSL VPN client uses an older version of OpenSSL library and the SSLv3 protocol to establish a connection. When an NSX 6.0.x client tries to connect to an NSX 6.2 gateway, the connection establishment fails at the SSL handshake level.

Workaround: Upgrade your SSL VPN client to NSX 6.2 after you have upgraded to NSX 6.2. For upgrade instructions, see the NSX Upgrade documentation.

Issue 1434909: Must create a segment ID pool for new or upgraded logical routers
In NSX 6.2, a segment ID pool with available segment IDs must be present before you can upgrade a logical router to 6.2 or create a new 6.2 logical router. This is true even if you have no plans to use NSX logical switches in your deployment.

Workaround: If your NSX deployment does not have a local segment ID pool, create one as a prerequisite to NSX logical router upgrade or installation.

Issue 1459032: Error configuring VXLAN gateway
When configuring VXLAN using a static IP pool (at Networking& Security>Installation> Host Preparation>Configure VXLAN) and the configuration fails to set an IP pool gateway IP on the VTEP(because the gateway is not properly configured or is not reachable), the VXLAN configuration status enters the Error (RED) state at for the host cluster.

The error message is VXLAN Gateway cannot be set on host and the error status is VXLAN_GATEWAY_SETUP_FAILURE. In the REST API call, GET https://<nsxmgr-ip>/api/2.0/nwfabric/status?resource=<cluster-moid>, the status of VXLAN is as follows:

  <message>VXLAN Gateway cannot be set on host</message>

Workaround: To fix the error, there are two options.

  • Option 1: Remove VXLAN configuration for the host cluster, fix the underlying gateway setup in the IP pool by making sure the gateway is properly configured and reachable, and then reconfigure VXLAN for the host cluster.

  • Option 2: Perform the following steps.

    1. Fix the underlying gateway setup in the IP pool by making sure the gateway is properly configured and reachable.

    2. Put the host (or hosts) into maintenance mode to ensure no VM traffic is active on the host.

    3. Delete the VXLAN VTEPs from the host.

    4. Take the host out of maintenance mode. Taking hosts out of maintenance mode triggers the VXLAN VTEP creation process on NSX Manager. NSX Manager will try to re-create the required VTEPs on the host.

Issue 1463767: In a cross vCenter deployment, a universal firewall configuration section might be under (subordinate to) a local configuration section
If you move a secondary NSX Manager to the standalone (transit) state and then change it back to the secondary state, any local configuration changes that you made while it was temporarily in the standalone state might be listed above the replicated universal configuration sections inherited from the primary NSX Manager. This produces the error condition universal section has to be on top of all other sections on secondary NSX Managers.

Workaround: Use the UI option to move sections up or down so that the local section is below the universal section.

Issue 1289348: After an upgrade, firewall rules and network introspection services might be out of sync with NSX Manager
After upgrading from NSX 6.0 to NSX 6.1 or 6.2, the NSX firewall configuration displays the error message: synchronization failed / out of sync. Using the Force Sync Services: Firewall action does not resolve the issue.

Workaround: In NSX 6.1 and NSX 6.2, either security groups or dvPortgroups can be bound to a service profile, but not both. To resolve the issue, modify your service profiles.

Issue 1462319: The esx-dvfilter-switch-security VIB is no longer present in the output of the "esxcli software vib list | grep esx" command.
Starting in NSX 6.2, the esx-dvfilter-switch-security modules are included within the esx-vxlan VIB. The only NSX VIBs installed for 6.2 are esx-vsip and esx-vxlan. During an NSX upgrade to 6.2, the old esx-dvfilter-switch-security VIB gets removed from the ESXi hosts.
Starting in NSX 6.2.3, a third VIB, esx-vdpi, is provided along with the esx-vsip and esx-vxlan NSX VIBs. A successful installation will show all 3 VIBs.

Workaround: None.

Issue 1481083: After the upgrade, logical routers with explicit failover teaming configured might fail to forward packets properly
When the hosts are running ESXi 5.5, the explicit failover NSX 6.2 teaming policy does not support multiple active uplinks on distributed logical routers.

Workaround: Alter the explicit failover teaming policy so that there is only one active uplink and the other uplinks are in standby mode.

Issue 1485862: Uninstalling NSX from a host cluster sometimes results in an error condition
When using the Uninstall action on the Installation: Host Preparation tab, an error might occur with the eam.issue.OrphanedAgency message appearing in the EAM logs for the hosts. After using the Resolve action and rebooting the hosts, the error state continues even though the NSX VIBs are successfully uninstalled.

Workaround: Delete the orphaned agency from the vSphere ESX Agent Manager (Administration: vCenter Server Extensions: vSphere ESX Agent Manager).

Issue 1479314: SSLv2 and SSLv3 deprecated in NSX 6.2
Starting in NSX 6.2, the SSL VPN gateway only accepts the TLS protocol. After the NSX upgrade, any new NSX 6.2 clients that you create automatically use the TLS protocol during connection establishment. When an NSX 6.0.x client tries to connect to an NSX 6.2 gateway, the connection establishment fails at the SSL handshake step.

Workaround: After the upgrade to NSX 6.2, uninstall your old SSL VPN clients and install the NSX 6.2 version of the SSL VPN clients.

Issue 1411275: vSphere Web Client does not display Networking and Security tab after backup and restore in NSX vSphere 6.2
When you perform a backup and restore operation after upgrading to NSX vSphere 6.2, the vSphere Web Client does not display the Networking and Security tab.

Workaround: When an NSX Manager backup is restored, you are logged out of the Appliance Manager. Wait a few minutes before logging in to the vSphere Web Client.

Issue 1493777: After upgrade to NSX 6.2, NSX Manager has more than 100 percentage of physical memory allocated
Starting in NSX 6.2, NSX Manager requires 16 GB of reserved memory. The former requirement was 12 GB.

Workaround: Increase the NSX Manager virtual appliance's reserved memory to 16 GB.

Issue 1716619: vNIC modification of NSX 5.x.x Edges fails on NSX 6.x.x Manager due to missing feature 'systemControl'
Configuring vNICs for NSX 5.x.x on NSX 6.x.x fails because there is no 'systemControl' entry for Edges created on vCNS (vCloud Networking and Security) manager. SystemControl feature was introduced in 6.1.5 and is not available on vCNS or vShield 5.5.x Manager. This issue is seen when editing interface configuration for older Edge appliances (vCNS or vShield 5.5.x) using NSX 6.1.5 onwards or NSX 6.2.x manager.

Workaround: Contact VMware technical support.

Issue 1393889: Data Security service status is shown as UP even when IP connectivity is not established
Data Security appliance may have not received the IP address from DHCP or is connected to an incorrect port group.

Workaround: Ensure that the Data Security appliance gets the IP from DHCP/IP Pool and is reachable from the management network. Check if the ping to the Data Security appliance is successful from NSX/ESX.

Service virtual machine deployed using the Service Deployments tab on the Installation page does not get powered on

Workaround: Follow the steps below.

  1. Manually remove the service virtual machine from the ESX Agents resource pool in the cluster.
  2. Click Networking and Security and then click Installation.
  3. Click the Service Deployments tab.
  4. Select the appropriate service and click the Resolve icon.
    The service virtual machine is redeployed.

Issue 1764460: After completing Host Preparation, all cluster members appear in ready state, but cluster level erroneously appears as "Invalid"
After you complete Host Preparation, all cluster members correctly appear in "Ready" state, but cluster level appears as "Invalid" and the reason displayed is that you need a host reboot, even though the host has already been rebooted.

Workaround: Click on the red warning icon and select Resolve.

NSX Manager Known Issues

New Issue 1772911: NSX Manager disk space consumption increasing rapidly, task and job tables size increasing with high CPU usage
NSX Manager CPU consistently is at 100% or is regularly spiking to 100%. Running the show process monitor command in NSX Manager Command Line Interface (CLI) displays the Java process that is consuming the highest CPU cycles. Disk space consumption growing rapidly with increase in DB size, resulting in slow performance of NSX Manager.

Workaround: Contact VMware technical support.

Issue 1441874: Upgrading a single NSX Manager in a vCenter Linked Mode Environment displays an error message
In an environment with multiple VMware vCenter Servers with multiple NSX managers, when selecting one or more NSX Managers from the vSphere Web Client > Networking and Security > Installation > Host Preparation, you see this error:
Could not establish communication with NSX Manager. Please contact administrator.

Workaround: See VMware Knowledge Base article 2127061 for more information.

Issue 1696750: Assigning an IPv6 address to NSX Manager via PUT API requires a reboot to take effect
Changing the configured network settings for NSX Manager via https://{NSX Manager IP address}/api/1.0/appliance-management/system/network requires a system reboot to take effect. Until the reboot, pre-existing settings will be shown.

Workaround: None.

Issue 1671067: NSX Plugin does not appear in vCenter Web Client while ESXTOP plugin is also installed
After deployment of NSX and successful registration with vCenter, NSX plugin does not appear in the vCenter Web Client. This issue is caused by conflict between NSX plugin and ESXTOP plugin.

Workaround: Remove ESXTOP plugin with the following procedure:

  1. Make sure there is a recent backup of vCenter Snapshot vCenter VM (without quiesce)
  2. Delete /usr/lib/vmware-vsphere-client/plugin-packages/esxtop-plugin
    rm -R /usr/lib/vmware-vsphere-client/plugin-packages/esxtop-plugin
  3. Delete /usr/lib/vmware-vsphere-client/server/work
    rm -R /usr/lib/vmware-vsphere-client/server/work
  4. Restart the web client
    service vsphere-client restart
  5. (Optional) Ensure that there is no output from the following command: "tail -f /var/log/vmware/vsphere-client/logs/eventlog.log | grep esx"
  6. Make sure to consolidate vCenter snapshot if that is the preferred method of roll back option

Issue 1486403: NSX Manager does not accept DNS search strings with a space delimiter
NSX Manager does not accept DNS search strings with a space delimiter. You may only use a comma as a delimiter. For example, if the DHCP server advertises eng.sample.com and sample.com for the DNS search list, NSX Manager is configured with eng.sample.com sample.com.

Workaround: Use comma separators. NSX Manager only accepts comma separator as DNS search strings.

Issue 1529178: Uploading a server certificate which does not include a common name returns an "internal server error" message

If you upload a server certificate that does not have any common name, an "internal server error" message appears.

Workaround: Use a server certificate which has both a SubAltName and a common name, or at least a common name.

Issue 1655388: NSX Manager 6.2.3 UI displays English language instead of local language when using IE11/Edge browser on Windows 10 OS for JA, CN, and DE languages

When you launch NSX Manager 6.2.3 with IE11/Edge browser on Windows 10 OS for JA, CN, and DE languages, English language is displayed.


Perform the following steps:

  1. Launch the Microsoft Registry Editor (regedit.exe), and go to Computer > HKEY_CURRENT_USER > SOFTWARE > Microsoft > Internet Explorer > International.
  2. Modify the value of AcceptLanguage file to native language. For example, If you want to change language to DE, change value and make the DE show the first position.
  3. Restart the browser, and log in to the NSX Manager again. Appropriate language is displayed.

Issue 1446649/1445281: Change in Secondary NSX Manager IP / Thumbprint results into Replication errors of Universal objects in a Cross-vCenter setup

If there is any change in the Secondary NSX Manager IP / Thumbprint, it would result into Replication errors of Universal objects in a Cross-vCenter setup as the Primary NSX Manager would not be aware of the latest IP/Thumbprint of the Secondary NSX Manager.

Workaround: If you click the Universal sync status of a Universal object and see exception like "Peer not authenticated;nested exception is javax.net.ssl.SSLPeerUniverifiedException", you can realize that the IP/Thumbprint has been changed.

Issue 1435996: Log files exported as CSV from NSX Manager are timestamped with epoch not datetime
Log files exported as CSV from NSX Manager using the vSphere Web Client are timestamped with the epoch time in milliseconds, instead of with the appropriate time based on the time zone.

Workaround: None.

Issue 1644297: Add/delete operation for any DFW section on the primary NSX creates two DFW saved configurations on the secondary NSX
In a cross-vCenter setup, when an additional universal or local DFW section is added to the primary NSX Manager, two DFW configurations are saved on the secondary NSX Manager. While it does not affect any functionality, this issue will cause the saved configurations limit to be reached more quickly, possibly overwriting critical configurations.

Workaround: None.

Issue 1534877: NSX management service doesn't come up when the hostname's length is more than 64 characters
Certificate creation via OpenSSL library requires a hostname less than or equal to 64 characters.

Issue 1537258: NSX Manager list slow to display in Web Client
In vSphere 6.0 environments with multiple NSX Managers, the vSphere web client may take up to two minutes to display the list of NSX Managers when the logged-in user is being validated with a large AD Group set. You may see a data service timeout error when attempting to display the NSX Manager list. There is no workaround. You must wait for the list to load/relogin to see the NSX Manager list.

Issue 1534622: NSX controller shows as disconnected
NSX Manager logs report disconnection to controllers via a message similar to "ERROR http-nio- BaseRestController:339 - Exception : 'I/O error: Read timed out; nested exception is java.net.SocketTimeoutException: Read timed out'". This condition occurs when an intermediate firewall on the network blocks the TCP/IP FIN message after the idle timeout value is reached. When this condition is occurring, the number of connections to the NSX Manager will increase.

Issue 1534606: Host Preparation Page fails to load
When running Virtual Center in linked mode, each VC must be connected to an NSX Manager on the same NSX version. If the NSX versions differ, the vSphere Web Client will only be able to communicate with the NSX Manager running the higher version of NSX. An error similar to "Could not establish communication with NSX Manager. Please contact administrator," will be displayed on the Host Preparation tab.

Workaround: All NSX managers should be upgraded to the same NSX software version.

Issue 1386874: Networking and Security Tab not displayed in vSphere Web Client
After vSphere is upgraded to 6.0, you cannot see the Networking and Security Tab when you log in to the vSphere Web Client with the root user name.

Workaround: Log in as administrator@vsphere.local or as any other vCenter user which existed on vCenter Server before the upgrade and whose role was defined in NSX Manager.

Issue 1415480: After NSX Manager backup is restored, REST call shows status of fabric feature com.vmware.vshield.nsxmgr.messagingInfra as Red
When you restore the backup of an NSX Manager and check the status of fabric feature com.vmware.vshield.nsxmgr.messagingInfra using a REST API call, it is displayed as Red instead of Green.

Workaround: Use the following REST API call to reset communication between NSX Manager and a single host or all hosts in a cluster.
POST https://<nsxmgr-ip>/api/2.0/nwfabric/configure? action=synchronize
    <resourceId>HOST/CLUSTER MOID</resourceId>

Issue 1027066: vMotion of NSX Manager may display the error message, "Virtual ethernet card Network adapter 1 is not supported"
You can ignore this error. Networking will work correctly after vMotion.

Issue 1406471: Syslog shows host name of backed up NSX Manager on the restored NSX Manager
If a second NSX Manager is installed with the same IP address and a unique hostname as the first NSX Manager, restoring the configuration will show the first NSX Manager’s hostname after a restore and the second NSX Manager’s hostname after reboot.

Workaround: Host name of second NSX Manager should be configured to be same as the backed up NSX Manager.

Issue 1477041: NSX Manager virtual appliance summary page shows no DNS name
When you log in to the NSX Manager virtual appliance, the Summary page has a field for the DNS name. This field remains blank even though a DNS name has been defined for the NSX Manager appliance.

Workaround: You can view the NSX Manager's hostname and the search domains on the Manage: Network page.

Issue 1492880: NSX Manager UI do not automatically log out after changing password using NSX Command Line Interface
If you are logged in to NSX Manager and recently changed your password using CLI, you might continue to stay logged in to the NSX Manager UI using your old password. Typically, NSX Manager client should automatically log you out if the session times out for being inactive.

Workaround: Log out from the NSX Manager UI and log back in with your new password.

Issue 1468613: Unable to edit a network host name
After you login to NSX Manager virtual appliance and navigate to the Appliance Management, click Manage Appliance Settings, and click Network under Settings to edit the network host name, you might receive an invalid domain name list error. This happens when the domain names specified in the Search Domains field are separated with whitespace characters, instead of commas. NSX Manager only accepts domain names that are comma separated.
Workaround: Perform the following steps:

  1. Log in to the NSX Manager virtual appliance.

  2. Under Appliance Management, click Manage Appliance Settings.

  3. From the Settings panel, click Network.

  4. Click Edit next to DNS Servers.

  5. In the Search Domains field, replace all whitespace characters with commas.

  6. Click OK to save the changes.

Issue 1436953: False system event is generated even after successfully restoring NSX Manager from a backup
After successfully restoring NSX Manager from a backup, the following system events appear in the vSphere Web Client when you navigate to Networking & Security: NSX Managers: Monitor: System Events.

  • Restore of NSX Manager from backup failed (with Severity=Critical).

  • Restore of NSX Manager successfully completed (with Severity=Informational).

Workaround: If the final system event message shows as successful, you can ignore the system generated event messages.

Issue 1489768: Change in behavior of NSX REST API call to add a namespace in a datacenter
In NSX 6.2, the POST https://<nsxmgr-ip>/api/2.0/namespace/datacenter/ REST API call returns a URL with an absolute path, for example In previous releases of NSX, this API call returned a URL with a relative path, for example: /api/2.0/namespace/datacenter/datacenter-1628/2.

Workaround: None.

Logical Networking Known Issues and NSX Edge Known Issues

New Issue 1799261: NSX Edge may run into split-brain condition after upgrade or redeploy
On the standby NSX Edge, the show service highavailability CLI command show high availability status as "Standby" but the config engine status as "Active".

Workaround: Reboot the standby NSX Edge.

New Issue 1777792: Peer Endpoint set as 'ANY' causes IPSec connection to fail
When IPSec configuration on NSX Edge sets remote peer endpoint as 'ANY', the Edge acts as an IPSec "server" and waits for remote peers to initiate connections. However, when the initiator sends a request for authentication using PSK and XAUTH, the Edge displays this error message: "initial Main Mode message received on XXX.XXX.XX.XX:500 but no connection has been authorized with policy=PSK+XAUTH" and IPsec can't be established.

Workaround: Use specific peer endpoint IP or FQDN in IPSec VPN configuration instead of ANY.

Issue 1741158: Creating a new, unconfigured NSX Edge and applying configuration can result in premature Edge service activation.
If you use the NSX API to create a new, unconfigured NSX Edge, then make an API call to disable one of the Edge services on that Edge (for example, set dhcp-enabled to "false"), and finally apply configuration changes to the disabled Edge service, that service will be made active immediately.

Workaround: After you make a configuration change to an Edge service that you wish to keep in disabled state, immediately issue a PUT call to set the enabled flag to "false" for that service.

Issue 1772004: Edge HA Failover from node 0 to node 1 takes longer than expected
Failover from node 0 to node 1 takes longer than expected in Edge HA configured environment whereas failover of traffic from node 1 to node 0 is normal.

Workaround: None.

Issue 1758500: Static route with multiple next-hops does not get installed in NSX Edge routing and forwarding tables if at least one of the next-hop configured is the Edge's vNIC IP address
With ECMP and multiple next-hop addresses, NSX allows the Edge's vNIC's IP address to be configured as next-hop if at least one of the next-hop IP addresses is valid. This is accepted without any errors or warnings but route for the network is removed from the Edge's routing/forwarding table.

Workaround: Do not configure the Edge's own vNIC IP address as a next-hop in static route when using ECMP.

Issue 1733165: IPsec may cause removal of dynamic routes from NSX Edge forwarding table
If a subnet reachable via dynamic route is used as a remote subnet for IPsec configuration, NSX Edge removes this subnet from the forwarding table and does not reinstall it even after this subnet is deleted from the IPsec configuration.

Workaround: Enable/Disable routing protocol or clear routing neighborship.

Issue 1726379: If IP mutlicast range has an upper bound value exceeding 99 in the last three octets, VXLAN trunk portgroup configuration fails.
While configuring segment ID, if you create a multicast IP range with an upper bound value exceeding 99 in the last three octets, for example,, and a multicast or hybrid logical switch with the same multicast IP range, VXLAN trunk portgroup configuration will fail.

Workaround: While configuring segment ID, use multicast IP range less than 100 for each of the last three octets, for example,

Issue 1675659: Floating Static Routes are preferred to OSPF Dynamic Routes
A backup Floating Static Route is incorrectly entered into an Edge's routing table when Route Redistribution is enabled even though an OSPF Route is available.

Workaround: To work around this issue, disable the route redistribution of static into OSPF.
Note: This issue does not impact the data path. See VMware knowledge base article 2147998.

Issue 1716464: NSX Load Balancer will not route to VMs newly tagged with a Security tag.
If we deploy two VMs with a given tag, and then configure an LB to route to that tag, the LB will successfully route to those two VMs. But if we then deploy a third VM with that tag, the LB only routes to the first two VMs. Workaround: Click "Save" on the LB Pool. This rescans the VMs and will start routing to newly tagged VMs.

Issue 1776073: When Edge with private local AS sends routes to EBGP peers, all the private AS paths are stripped off from the BGP routing updates sent.
NSX currently has a limitation that prevents it from sharing the full AS path with eBGP neighbors when the AS path contains only private AS paths. While this is the desired behavior in most cases, there are cases in which the administrator may want to share private AS paths with an eBGP neighbor.

Workaround: No workaround available to make the Edge announce all the AS paths in the BGP update.

Issue 1733146: Under certain conditions, creating or modifying LIFs for a Universal DLR fails when no control VM exists

This issue is known to manifest under the following conditions:

  • ECMP with two static default routes
  • Static routes with local egress flag
This issue results from a full synchronization being requested instead of a delta update, resulting in the rejection of duplicate entities and a failed operation. A message similar to the following will be seen:
2016-09-22 20:18:58.080 GMT ERROR TaskFrameworkExecutor-24 NvpRestClientManagerImpl:774 - NVP API returns error: [409] Route with the same prefix and priority already exist on router dc5e541a-d7a6-4cb9-8d8a-9334a9c51127


  1. Delete the universal logical router.
  2. Deploy a new universal logical router. Enable local egress and uncheck “Deploy Edge Appliance”. Configure two uplink interfaces and a default gateway IP address via the first uplink using the locale-id on the primary DLR (for example, 1111xxxx).
  3. Do not add a static route of with the locale id used on the secondary site (for example, 2222xxxx).
  4. Add the following two static routes with the expected next-hop IP address and locale id of the secondary site (for example, 222xxxx).
  5. Route #1:
    Route #2:

Issue 1716545: Changing appliance size of Edge does not affect standby Edge's CPU and Memory reservation

Only the first Edge VM created as part of an HA pair is assigned the reservation settings.
To configure the same CPU/Memory reservation on both Edge VMs:

  • Use the PUT API https:// <NSXManager>/api/4.0/edgePublish/tuningConfiguration to set explicit values for both Edge VMs.
  • or
  • Disable and re-enable Edge HA, which will delete the second Edge VM and redeploy a new one with the default reservations.

Workaround: None.

Issue 1510724: Default routes do not populate on the hosts after creating a new Universal Distributed Logical Router (UDLR)

After changing NSX Manager from Standalone to Primary mode for the purpose of configuring Cross-vCenter in NSX for vSphere 6.2.x, you may experience these symptoms:

  • When you create a new UDLR, the default routes are not populated on the host instance.
  • Routes are populated on the UDLR Control VM but not on the host instance.
  • Running the show logical-router host host-ID dlr Edge-ID route command fails to show default routes.

Workaround: To recover from this issue, refer to VMware knowledge base article 2145959.

Issue 1492547: Extended convergence time seen when NSX-based OSPF area border router with highest IP address is shut down or rebooted
If an NSSA area border router which does not have the highest IP address is shut down or rebooted, traffic converges rapidly to another path. If an NSSA area border router with the highest IP address is shut down or rebooted, a multi-minute re-convergence time is seen. The OSPF process can be cleared manually to reduce the convergence time.

Workaround: See VMware knowledge base article 2127369.

Issue 1542416: Data path not working for 5 min after edge re-deploy and HA failover with sub-interfaces
Redeploy or HA failover operation will see a five minute outage if sub-interfaces are used. Issue is not observed on interfaces.

Workaround: No workaround.

Issue 1706429: Communication issues when enabling high availability (HA) after initial logical (distributed) router deployment might cause both logical router appliances to be active.
If you deploy a logical router without HA and then later enable HA (deploying a new logical router appliance), or if you disable and then re-enable HA, sometimes one of the logical router appliances is missing a connected route to the HA interface. This causes both appliances to be in the active state.

Workaround: On the logical router appliance that is missing the connected route for the HA interface, either disconnect and then reconnect the vNIC of the logical router appliance, or reboot the logical router appliance.

Issue 1461421: "show ip bgp neighbor" command output for NSX Edge retains the historical count of previously established connections

The “show ip bgp neighbor” command displays the number of times that the BGP state machine transitioned into the Established state for a given peer. Changing the password used with MD5 authentication causes the peer connection to be destroyed and re-created, which in turn will clear the counters. This issue does not occur with an Edge DLR.

Workaround: To clear the counters, execute the "clear ip bgp neighbor" command.

Issue 1676085: Enabling Edge HA will fail if resource reservation fails

Starting with NSX for vSphere 6.2.3, enabling high availability on an existing Edge will fail when sufficient resources cannot be reserved for the second Edge VM appliance. The configuration will roll back to the last known good configuration. In previous releases, if HA is enabled after Edge deployment and resource reservation fails, the Edge VM still is created.

Workaround: This is an expected change in behavior.

Issue 1656713: IPsec Security Policies (SPs) missing on the NSX Edge after HA failover, traffic cannot flow over tunnel

The Standby > Active switchover will not work for traffic flowing on IPsec tunnels.

Workaround: Disable/Enable IPsec after the NSX Edge switchover.

Issue 1624663: After clicking "Configure Advanced Debugging" refreshes the VC UI and the change does not persist

After clicking the specific edge ID > Configuration > Action > Configure Advanced Debugging causes the VC UI to refresh and the change does not persist

Workaround: Go directly to the Edge list menu, highlight the edge, and click Action > Configure Advanced Debugging to continue with the changes.

Issue 1354824: When an Edge VM becomes corrupted or becomes otherwise unreachable due to such reasons as a power failure, system events are raised when the health check from NSX Manager fails

The system events tab will report "Edge Unreachability" events. The NSX Edges list may continue to report a Status of Deployed.

Workaround: Use the https://NSX-Manager-IP-Address/api/4.0/edges/edgeId/status API with detailedStatus=true.

Issue 1556924: L3 connectivity loss with VXLAN would block error

When DLR LIF's are configured on the host but underlying VXLAN layer is not fully prepared, connectivity through some of DLR LIF's may be affected. Some of the VMs belonging to DLR are not reachable. There might be "Failed to Create VXLAN trunk status: Would block" logs in /var/log/vmkernel.log file.

Workaround: You may delete the LIF's and recreate them. Another option is rebooting the affected ESX hosts.

Issue 1647657: Show commands on an ESXi host with VDR display no more than 2000 routes per VDR instance

Show commands on an ESXi host with VDR enabled will not show more than 2000 routes per VDR instance, although more than this maximum may be running. This issue is a display issue, and the data path will work as expected for all routes.

Workaround: No workaround.

Issue 1634215: OSPF CLI commands output does not indicate whether routing is disabled

When OSPF is disabled, routing CLI commands output does not show any message saying "OSPF is disabled". The output is empty.

Workaround: The show ip ospf command will display the correct status.

Issue 1663902: Renaming an NSX Edge VM disrupts traffic flowing through the Edge

Issue 1647739: Redeploying an Edge VM after a vMotion operation will cause the Edge or DLR VM to be placed back on the original cluster.  

Workaround: To place the Edge VM in a different resource pool or cluster, use the NSX Manager UI to configure the desired location.

Issue 1463856: When NSX Edge Firewall is enabled, existing TCP connections are blocked
TCP connections are blocked through the Edge stateful firewall as the initial three-way handshake cannot be seen.

Workaround: To handle such existing flows, do the following. Use the NSX REST API to enable the flag "tcpPickOngoingConnections" in the firewall global configuration. This switches the firewall from strict mode to lenient mode. Next, enable the firewall. Once existing connections have been picked up (this may take a few minutes after you enable the firewall), set the flag "tcpPickOngoingConnections" back to false to return the firewall to strict mode. (This setting is persistent.)

PUT /api/4.0/edges/{edgeId}/firewall/config/global


Issue 1374523: Reboot ESXi, or run [services.sh restart] after installation of VXLAN VIB to make the VXLAN commands available using esxcli

After installation of VXLAN VIB, you must reboot ESXi or run the [services.sh restart] command, so that the VXLAN commands becomes available using esxcli.

Workaround: Instead of using esxcli, use localcli.

Issue 1604514: Editing/Configuring default gateway on an unmanaged DLR fails after clicking Publish

When a default gateway is added to an unmanaged DLR, the publish will fail with error "Routing Distance is support only on NSX Edge version 6.2.0 and later with NSX Edge VMs deployed". This is due to the default admin distance "1" populated on the UI.

Workaround: Remove the admin distance "1" which is populated by default.

Issue 1642087: After modifying the securelocaltrafficbyip parameter value in the IPsec VPN Extension, forwarding to destination networks fails

When using an NSX Edge Services Gateway, you experience this symptom:

  • After changing the securelocaltrafficbyip value to 0 in the NSX UI (Edit IPsec VPN screen), forwarding to a remote subnet of the IPsec VPN tunnel no longer works
  • After changing this parameter, you no longer see the correct information for a remote subnet in the IP routing table

Workaround: Disable and re-enable the IPSec VPN service. Then validate that the expected routing information is shown in the CLI and the UI.

Issue 1525003: Restoring an NSX Manager backup with an incorrect passphrase will silently fail as critical root folders cannot be accessed

Workaround: None.

Issue 1637639: When using the Windows 8 SSL VPN PHAT client, the virtual IP is not assigned from the IP pool
On Windows 8, the virtual IP address is not assigned as expected from the IP pool when a new IP address is assigned by the Edge Services Gateway or when the IP pool changes to use a different IP range.

Workaround: This issue occurs only on Windows 8. Use a different Windows OS to avoid experiencing this issue.

Issue 1628220: DFW or NetX observations are not seen on receiver side
Traceflow may not show DFW and NetX observations on receiver side if switch port associated with the destination vNIC changed. It will not be fixed for vSphere 5.5 releases. For vSphere 6.0 and up, there is no such issue.

Workaround: Do not disable vNIC. Reboot VM.

Issue 1534603: IPsec and L2 VPN service status shows as down even when the service is not enabled
Under the Settings tab in the UI, the L2 service status is displayed as down, however the API shows the L2 status as up. L2 VPN and IPsec service always shows as down in the Settings tab unless the UI page is refreshed.

Workaround: Refresh the page.

Issue 1562767: Delays in connecting to NSX load balancer do not provide consistent connections over multiple VIPs
When the load balancer is configured to use Source IP Hash load balancing, a connected client session receives a consistent connection to a backend server. The load balancer should also be able to provide, for a given connected client, consistent connections over multiple VIPs if those VIPs are backed by the same server pool. That is, when one backend server serves multiple VIPs, a given client's connection to one of that backend server's VIPs should guarantee that that client will use the same backend server when connecting to other VIPs served by that backend server. A known issue prevents the NSX load balancer from providing such consistent connections over multiple VIPs.

Issue 1553600: Delays in connecting to RIB and FIB after assigning IP address to interface
When you attempt to assign an IP address to an interface, typically, the interface information is updated immediately. However, when waiting for a polling event, you may observe a delay in seeing the assigned IP address. (The NSX logical router polls periodically to get changes in the interfaces.)

Issue 1534799: Slow convergence when OSPF area border router with highest IP address is shut down
Convergence takes a long time when the NSX-based, OSPF area border router (ABR) with highest IP address is shut down or rebooted. If an ABR that does not have the numerically highest IP address is shut down or rebooted, traffic converges quickly to another path. However, if the ABR with the highest IP address is shut down or rebooted, a multi-minute re-convergence time is seen. The OSPF process can be cleared manually to reduce the convergence time.

Issue 1446327: Some TCP-based applications may time out when connecting through NSX Edge
The default TCP established connection inactivity timeout is 3600 seconds. The NSX Edge deletes any connections idle for more than the inactivity timeout and drops those connections.

  1. If the application has a relatively long inactivity time, enable TCP keepalives on the hosts with keep_alive_interval set to less than 3600 seconds.
  2. Increase the Edge TCP inactivity timeout to greater than 2 hours using the following NSX REST API. For example, to increase the inactivity timeout to 9000 seconds. NSX API URL:
    /api/4.0/edges/{edgeId}/systemcontrol/config PUT Method <systemControl> <property>sysctl.net.netfilter.nf_conntrack_tcp_timeout_established=9000</property> </systemControl>

Issue 1534602: UI does not display Edge management plane mode (VIX/MSGBUS), and does not provide the option to change from VIX to MSGBUS
When an Edge appliance is in VIX mode, it is not eligible to be selected for inclusion in DFW, and centralized CLI commands take much longer to run compared to MSGBUS mode
Workaround: Make sure that the cluster where the Edge is deployed is prepared for NSX and its "NSX Manager to Firewall Agent" is in "Up" state, and redeploy the Edge.

Issue 1498243: Distributed logical router advertises incorrect next hop for default route when BGP neighbor filter is set to "DENY, ANY, OUT"
With 'default originate' enabled on an NSX distributed logical router (DLR), setting a BGP neighbor filter of "DENY, ANY, OUT" on the DLR causes the DLR to advertise an incorrect next hop address for the default route. This error occurs only when a BGP neighbor filter is added with the following attributes:

  • Action: DENY
  • Network: ANY
  • Direction: OUT

Workaround: None.

Issue 1471561: BGP/OSPF neighbor relationship is not established with directly connected routers 
Dynamic routing does not work as expected with directly connected routers when ECMP routes exist for that directly connected network.

Workaround: Reboot Edge OR delete and re-create the associated vNIC interface.

Issue 1089745: Logical router LIF routes are advertised by upstream Edge Services Gateway even if logical router OSPF is disabled
Upstream Edge Services Gateway will continue to advertise OSPF external LSAs learned from logical router connected interfaces even when logical router OSPF is disabled.

Workaround: Disable redistribution of connected routes into OSPF manually and publish before disabling OSPF protocol. This ensures that routes are properly withdrawn.

Issue 1498965: Edge syslog messages do not reach remote syslog server
Immediately after deployment, the Edge syslog server cannot resolve the hostnames for any configured remote syslog servers.

Workaround: Configure remote syslog servers using their IP address, or use the UI to Force Sync the Edge.

Issue 1494025: Logical router DNS Client configuration settings are not fully applied after updating REST Edge API

Workaround: When you use REST API to configure DNS forwarder (resolver), perform the following steps:

  1. Specify the DNS Client XML server's settings so that they match the DNS forwarder setting.

  2. Enable DNS forwarder, and make sure that the forwarder settings are same as the DNS Client server's settings specified in the XML configuration.

Issue 1243112: Validation and error message not present for invalid next hop in static route, ECMP enabled
When trying to add a static route, with ECMP enabled, if the routing table does not contain a default route and there is an unreachable next hop in the static route configuration, no error message is displayed and the static route is not installed.

Workaround: None.

Issue 1288487: If an NSX Edge virtual machine with one sub interface backed by a logical switch is deleted through the vCenter Web Client user interface, data path may not work for a new virtual machine that connects to the same port
When the Edge virtual machine is deleted through the vCenter Web Client user interface (and not from NSX Manager), the VXLAN trunk configured on dvPort over opaque channel does not get reset. This is because trunk configuration is managed by NSX Manager.

Workaround: Manually delete the VXLAN trunk configuration by following the steps below:

  1. Navigate to the vCenter Managed Object Browser by typing the following in a browser window:
  2. Click Content.
  3. Retrieve the dvsUuid value by following the steps below.
    1. Click the rootFolder link (for example, group-d1(Datacenters)).
    2. Click the data center name link (for example, datacenter-1).
    3. Click the networkFolder link (for example, group-n6).
    4. Click the DVS name link (for example, dvs-1)
    5. Copy the value of uuid.
  4. Click DVSManager and then click updateOpaqueDataEx.
  5. In selectionSet, add the following XML.
    <selectionSet xsi:type="DVPortSelection">
        <portKey>value</portKey> <!--port number of the DVPG where trunk vnic got connected-->
  6. In opaqueDataSpec, add the following XML
  7. Set isRuntime to false.
  8. Click Invoke Method.
  9. Repeat steps 5 through 8 for each trunk port configured on the deleted Edge virtual machine.

Issue 1637939: MD5 certificates are not supported while deploying hardware gateways
While deploying hardware gateway switches as VTEPs for logical L2 VLAN to VXLAN bridging, the physical switches support at minimum SHA1 SSL certificates for OVSDB connection between the NSX controller and OVSDB switch.

Workaround: None.

Issue 1637943: No support for hybrid or multicast replication modes for VNIs that have a hardware gateway binding
Hardware gateway switches when used as VTEPs for L2 VXLAN-to-VLAN bridging support Unicast replication mode only.

Workaround: Use Unicast replication mode only.

Issue 1493611: No connectivity on VLAN ID 0 in L2 VPN
NSX L2 VPN configuration incorrectly allows the user to configure an L2 VPN with VLAN ID 0. Once configured, no traffic can flow on this VPN.

Workaround: Workaround: Use a valid VLAN ID in the range from 1 to 4094.

Security Services Known Issues

Issue 1741844: Using ARP snooping to detect address of vNIC with multiple IP addresses results in 100% CPU consumption
This issue occurs when a virtual machine's vNIC is configured with multiple IP addresses and ARP snooping is enabled for IP detection. The IP discovery module keeps sending vNIC-IP updates to the NSX Manager continuously to change the vNIC-IP mapping for all VMs configured with multiple IP addresses.

Workaround: There is no workaround. Currently the ARP snooping feature supports only one IP address per vNIC. For more information, see the section IP Discovery for Virtual Machines in the NSX Administration Guide.

Issue 1689159: The Add Rule feature in Flow Monitoring does not work correctly for ICMP flows.
When adding a rule from Flow Monitoring, the Services field will remain blank if you do not explicitly set it to ICMP and as a result, you may end up adding a rule with the service type "ANY".

Workaround: Update the Services field to reflect ICMP traffic.

Issue 1620460: NSX fails to prevent users from creating rules in Service Composer rules section
In the vSphere Web Client, the Networking and Security: Firewall interface fails to prevent users from adding rules to the Service Composer rules section. Users should be permitted to add rules above/below the Service Composer section, but not inside it.

Workaround: Do not use the "+" button at the global rule level to add rules to the Service Composer rules section.

Issue 1682552: Threshold events for CPU/Memory/CPS for Distributed Firewall (DFW) are not reported
Even when the DFW thresholds for CPU/Memory/CPS are set for reporting, the threshold events are not reported when the thresholds are crossed.


  • Login to each ESXi host and restart the DFW controlplane process by running the following command:
  • /etc/init.d/vShield_Stateful_Firewall restart
  • Verify the status using the following command:
  • /etc/init.d/vShield_Stateful_Firewall status
  • The result similar to following is displayed:
  • "vShield-Stateful-Firewall is running"

Note: You should be cautious while performing this operation as this will push all DFW rules to all the filters again. If there are lot of rules, it might take some time to enforce them on all the filters.

Issue 1707931: Order of distributed firewall rules changes when service policies defined in Service Composer are present, and a firewall rule is modified or published with a filter applied in the Firewall UI
Changing the order, adding or deleting service policies created in Service Composer after one or more publish operations are made from the Networking & Security > Firewall UI will cause the order of firewall rules to change and may result in unintended consequences.

Workaround: The following workarounds are available:

  • Synchronize Service Composer rules with firewall rules by selecting Synchronize Firewall Rules from the Actions menu in the Security Policies tab.
  • Use filters only to view a set of rules and not to update a rule set.
  • Perform a full publish before using a filter via the REST API /api/4.0/firewall/globalroot-0/config PUT or via the UI by updating multiple sections (not a single section) to ensure that the global firewall configuration is changed.

Issue 1717635: Firewall configuration operation fails if more than one cluster is present in environment and changes are done in parallel
In an environment with multiple clusters, if two or more users modify the firewall configuration continuously in a tight loop. (for example, Add/Delete sections or rules), some operations fail, and the user will see an API response similar to:
<?xml version="1.0" encoding="UTF-8"? >
neutron-server.log.1:70282:2016-08-23 17:58:23.429 30787 ERROR vmware_nsx.plugins.nsx_v.plugin
<details> org.hibernate.exception.GenericJDBCException: Could not execute JDBC batch update; nested exception is javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCException: Could not execute JDBC batch update </details>

Workaround: Avoid concurrent modification of the firewall configuration.

Issue 1717994: Distributed Firewall (DFW) Status API query reports 500 internal server error intermittently
If the DFW status API query is issued while adding a new host into a host prepared cluster, the API query fails with 500 internal server error for few attempts, and then returns correct response once the host starts to get VIBs installed.

Workaround: Do not use the DFW status API query until the new host is prepared successfully.

Issue 1686036: Firewall rules cannot be added, edited, or removed when default section is deleted
If the default Layer2 or Layer3 section is deleted, publishing a firewall rule may fail.

Workaround: Do not delete the default rule. If the configuration with default rule was saved in draft, perform the following steps:

  1. Delete the complete firewall configuration using following DELETE API call.
  2. https://<NSX Manager IP>/api/4.0/firewall/globalroot-0/config
    This will restore the default section on the firewall.
  3. Load the saved draft of firewall rules with default section to the firewall.

Issue 1632235: During Guest Introspection installation, network drop down list displays "Specified on Host" only
When installing Guest Introspection with the NSX anti-virus-only license and vSphere Essential or Standard license, the network drop down list will display only the existing list of DV port groups. This license does not support DVS creation.

Workaround: Before installing Guest Introspection on a vSphere host with one of these licenses, first specify the network in the "Agent VM Settings" window.

Issue 1652155: Creating or migrating firewall rules using REST APIs may fail under certain conditions and report HTTP 404 error

Adding or migrating firewall rules using REST APIs is not supported under these conditions:

  • Creating firewall rules as a bulk operation when the autosavedraft=true is set.
  • Adding firewall rules in sections concurrently.

Workaround: Set the autoSaveDraft parameter to false in the API call when performing bulk firewall rule creation or migration.

Issue 1509687: URL length supports up to 16000 characters when assigning a single security tag to many VMs at a time in one API call
A single security tag cannot be assigned to a large number of VMs simultaneously with a single API if the URL length is more than 16,000 characters.

Workaround: To optimize performance, tag up to 500 VMs in a single call.

Issue 1662020: Publish operation may fail resulting in an error message "Last publish failed on host host number" on DFW UI in General and Partner Security Services sections

After changing any rule, the UI displays "Last publish failed on host host number". The hosts listed on the UI may not have correct version of firewall rules, resulting in lack of security and/or network disruption.

The problem is usually seen in the following scenarios:

  • After upgrade from older to latest NSXv version.
  • Move a host out of cluster and move it back in.
  • Move a host from one cluster to another.

Workaround: To recover, you must force sync the affected clusters (firewall only).

Issue 1481522: Migrating firewall rule drafts from 6.1.x to 6.2.3 is not supported as the drafts are not compatible between the releases

Workaround: None.

Issue 1491046: IPv4 IP address does not get auto approved when SpoofGuard policy is set to Trust On First Use (TOFU) in VMware NSX for vSphere 6.2.x

Workaround: See VMware knowledge base article 2144649.

Issue 1628679: With identity-based firewall, the VM for removed users continues to be part of the security group

When a user is removed from a group on the AD server, the VM where the user is logged-in continues to be a part of the security-group. This retains firewall policies at the VM vnic on the hypervisor, thereby granting the user full access to services.

Workaround: None. This behavior is expected by design.

Issue 1662020: In a cross vCenter setup, an error message "Last publish failed on host" appears on DFW UI in General and Partner Security Services tabs

The error message appears when the associated NIC for the rules is not present.

Workaround: None.

Issue 1462027: In cross vCenter NSX deployments, multiple versions of saved firewall configurations get replicated to secondary NSX Managers
Universal Sync saves multiple copies of universal configurations on secondary NSX Managers. The list of saved configurations contains multiple drafts created by the synchronizing across NSX Managers with the same name and at the same time or with a time difference of 1 second.

Workaround: Run the API call to delete duplicate drafts.

DELETE : https://<nsxmgr-ip>/api/4.0/firewall/config/drafts/

Find the drafts to be deleted by viewing all drafts:

GET: https://<nsxmgr-ip>/api/4.0/firewall/config/drafts

In the following sample output, drafts 143 and 144 have the same name and were created at the same time and are therefore duplicates. Likewise, drafts 127 and 128 have the same name are off by 1 second and are also duplicates.

    <firewallDraft id="144" name="AutoSaved_Wednesday, August 5, 2015 11:08:40 PM GMT" timestamp="1438816120917">
        <description>Auto saved configuration</description>
    <firewallDraft id="143" name="AutoSaved_Wednesday, August 5, 2015 11:08:40 PM GMT" timestamp="1438816120713">
        <description>Auto saved configuration</description>
   <firewallDraft id="128" name="AutoSaved_Wednesday, August 5, 2015 9:08:02 PM GMT" timestamp="1438808882608">
        <description>Auto saved configuration</description>
    <firewallDraft id="127" name="AutoSaved_Wednesday, August 5, 2015 9:08:01 PM GMT" timestamp="1438808881750">
        <description>Auto saved configuration</description>

Issue 1449611: When a firewall policy in the Service Composer is out of sync due to a deleted security group, the firewall rule cannot be fixed in the UI

Workaround: In the UI, you can delete the invalid firewall rule and then add it again. Or, in the API, you can fix the firewall rule by deleting the invalid security group. Then synchronize the firewall configuration: Select Service Composer: Security Policies, and for each security policy that has associated firewall rules, click Actions and select Synchronize Firewall Config. To prevent this issue, modify firewall rules so that they do not refer to security groups before deleting the security groups.

Issue 1557880: Layer 2 (L2) rules may be missing if the MAC address of a VM used in the rules is modified
Because L2 rule optimization is ON by default, L2 rules with both source and destination fields specified (other than "any") will be applied to vNICs(or filters) only if the vNIC MAC address matches the source or destination MAC address list. Hosts with VMs not matching the source or destination MAC addresses will not have those L2 rules applied.

Workaround: To have L2 rules applied to all vNICs(or filters), set one of the source or destination fields to "any".

Issue 1505316: NSX NetX rule not published to host when selected service is a Service Group
When creating an L3 Redirection rule in the Partner Services tab in DFW, selecting a Service Group doesn't create the rule correctly.

Workaround: Use individual services when creating the rule instead of using a Service Group.

Issue 1496273: UI allows creation of in/out NSX firewall rules that cannot be applied to Edges
The web client incorrectly allows creation of an NSX firewall rule applied to one or more NSX Edges when the rule has traffic traveling in the 'in' or 'out' direction and when PacketType is IPV4 or IPV6. The UI should not allow creation of such rules, as NSX cannot apply them to NSX Edges.

Workaround: None.

Issue 1534574: There is no support for Cipher 3C (SHA-256) encryption algorithms for SSLVPN-Plus

Issue 1557924: Universal logical switch is allowed to be consumed in the appliedTo field of a local DFW rule
When a universal logical switch is used as a security group member, the DFW rule can use that security group in AppliedTo field. This indirectly applies the rule on the universal logical switch, which should not be allowed because it may cause unknown behavior of those rules.

Workaround: None.

Issue 1559971: Cross-vCenter NSX firewall exclude list not published if firewall is disabled on one cluster
In cross-vCenter NSX, firewall exclude list is not published to any cluster when the firewall is disabled on one of the clusters.

Workaround: Force sync the affected NSX Edges.

Issue 1407920: Firewall rule republish fails after DELETE API is used
If you delete the entire firewall configuration through the DELETE API method and then try to republish all the rules from a previously saved firewall rules draft, then the rule publish will fail.

Issue 1534585: Publishing Distributed Firewall (DFW) rules fails after referenced object is deleted in VMware NSX for vSphere 6.1.x and 6.2.x

Workaround: If this occurs, see knowledge base article 2126275.

Issue 1494718: New universal rules cannot be created, and existing universal rules cannot be edited from the flow monitoring UI

Workaround: Universal rules cannot be added or edited from the flow monitoring UI. EditRule will be automatically disabled.

Issue 1442379: Service composer firewall configuration out of sync
In the NSX service composer, if any firewall policy is invalid (for example of you deleted a security group that was currently in use in a firewall rule), deleting or modifying another firewall policy causes the service composer to become out of sync with the error message Firewall configuration is not in sync.

Workaround: Delete any invalid firewall rules and then synchronize the firewall configuration. Select Service Composer: Security Policies, and for each security policy that has associated firewall rules, click Actions and select Synchronize Firewall Config. To prevent this issue, always fix or delete invalid firewall configurations before making further firewall configuration changes.

Issue 1066277: Security policy name does not allow more than 229 characters
The security policy name field in the Security Policy tab of Service Composer can accept up to 229 characters. This is because policy names are prepended internally with a prefix.

Workaround: None.

Issue 1443344: Some versions of 3rd-party Networks VM-Series do not work with NSX Manager default settings
Some NSX 6.1.4 or later components disable SSLv3 by default. Before you upgrade, please check that all third-party solutions integrated with your NSX deployment do not rely on SSLv3 communication. For example, some versions of the Palo Alto Networks VM-series solution require support for SSLv3, so please check with your vendors for their version requirements.

Issue 1660718: Service Composer policy status is shown as "In Progress" at the UI and "Pending" in the API output

Workaround: None.

Issue 1620491: Policy-level Sync status in Service Composer does not show publishing status of the rules within a policy

When a policy is created or modified, Service Composer will display a success status which indicates only the persistence state. It does not reflect whether the rules were published to the host successfully.

Workaround: Use the firewall UI to view publish status.

Issue 1317814: Service Composer goes out of sync when policy changes are made while one of the Service Managers is down
When a policy changes is made when one of multiple Service Managers is down, the changes will fail, and Service Composer will fall out of sync.

Workaround: Ensure the Service Manager is responding and then issue a force sync from Service Composer.

Issue 1070905: Cannot remove and re-add a host to a cluster protected by Guest Introspection and third-party security solutions
If you remove a host from a cluster protected by Guest Introspection and third-party security solutions by disconnecting it and then removing it from vCenter Server, you may experience problems if you try to re-add the same host to the same cluster.

Workaround: To remove a host from a protected cluster, first put the host in maintenance mode. Next, move the host into an unprotected cluster or outside all clusters and then disconnect and remove the host.

Issue 1648578: NSX forces the addition of cluster/network/storage when creating a new NetX host-based service instance
When you create a new service instance from the vSphere Web Client for NetX host-based services such as Firewall, IDS, and IPS , you are forced to add cluster/network/storage even though these are not required.

Workaround: When creating a new service instance, you may add any information for cluster/network/storage to fill out the fields. This will allow the creation of the service instance and you will be able to proceed as required.

Issue 1772504: Service Composer does not support Security Groups with MAC Set
Service Composer allows use of Security Groups in Policy configurations. In case there is a Security Group which contains MAC Set, Service Composer accepts that Security Group without complaining, but fails to enforce rules for that specific MAC Set. This is because Service Composer works on Layer3 and does not support Layer2 constructs. Note that if a Security Group has IP Set and MAC Set both, the IP set will still be effective, but the MAC Set will be ignored. There is no harm in referencing a Security Group containing MAC Set - user must be aware that the MAC Set will be ignored.

Workaround: If the user's intent is to create Firewall rules using a MAC Set, then the user should use DFW Layer2/Ethernet configuration instead of Service Composer.

Issue 1718726: Cannot force-sync Service Composer after a user has manually deleted the Service Composer's policy section using DFW REST API

In a cross-vCenter NSX environment, a user's attempt to force sync NSX Service Composer configuration will fail if there was only one policy section and that policy section (the Service Composer-managed policy section) was deleted earlier via a REST API call.

Workaround: Do not delete the Service Composer-managed policy section via a REST API call. (Note that the UI already prevents deletion of this section.)

Monitoring Services Known Issues

Issue 1655593: Missing status on NSX Dashboard when logging in as Auditor or Security Admin roles

When viewing NSX Dashboard as Auditor or Security Admin, an error message "User is not authorized to access object ... and feature ... Please check object access scope and feature permissions for the user" appears. For example, Auditor may not be able to see "Logical Switch Status" from the Dashboard.

Workaround: None.

Issue 1466790: Unable to choose VMs on bridged network using the NSX traceflow tool
Using the NSX traceflow tool, you cannot select VMs that are not attached to a logical switch. This means that VMs on an L2 bridged network cannot be chosen by VM name as the source or destination address for traceflow inspection.

Workaround: For VMs attached to L2 bridged networks, use the IP address or MAC address of the interface you wish to specify as destination in a traceflow inspection. You cannot choose VMs attached to L2 bridged networks as source. See the knowledge base article 2129191 for more information.

Issue 1626233: When NetX service virtual machine (SVM) drops packets, traceflow does not generate dropped observation

The traceflow session exits after packet is sent to the NetX service virtual machine (SVM). When the SVM drops packets, traceflow does not generate dropped observation.

Workaround: There is no workaround. If the traceflow packet is not injected back, it can be assumed that the SVM dropped the packet.

Solution Interoperability Issues

Issue 1568861: The NSX Edge deployment fails during any edge deployment from a VCD cell that does not own the VC listener

The NSX Edge deployment fails during any Edge deployment from a VCD cell that does not own the VC listener. Also, NSX Edge actions, including a redeploy, fail from VCD.

Workaround: Deploy an NSX Edge from the VCD cell which owns the VC listener.

Issue 1530360: After an NSX Manager VM has failed over, Site Recovery Manager (SRM) incorrectly reports a timeout error

When a NSX Manager VM is failed over, SRM incorrectly reports a timeout error waiting for VMware Tools. In this case, VMware Tools actually is up and running within the 300 second timeout.

Workaround: None.

NSX Controller Known Issues

Issue 1765354: <deployType> is a required property but it is not used
<deployType> is a required property but it is not used and does not mean anything.

Issue 1760102: Virtual machines may fail to communicate after an NSX controller is deleted and redeployed to recover from a storage outage
An NSX Controller for the vSphere 6.2.x environment may get into read-only mode in case of a storage outage. If you delete and redeploy the controller to recover from that state, some VMs may fail to communicate. Expected behavior in case of a storage outage on a controller is that rebooting of the controller should recover it from read-only mode, but currently that does not happen in NSX.

Workaround: Restart the NSX Management Service.

Issue 1516207: Controller(s) may become isolated after IPsec communication is re-enabled on an NSX controller cluster
If an NSX controller cluster is set to allow controller-to-controller communications in the clear (IPsec is disabled), and IPsec-based communication is later re-enabled, one or more controllers may become isolated from the cluster majority due to a mismatched pre-shared key ("PSK"). When this occurs, the NSX API may become unable to change the IPsec settings of the controllers.


Follow these steps to address this issue:

  1. Disable IPSec using the NSX API.

    PUT: /2.0/vdn/controller/node <controllerNodeConfig>

  2. Re-enable IPsec using the NSX API.

    PUT: /2.0/vdn/controller/node <controllerNodeConfig>

Follow these best practices to avoid this issue:

  • Always use the NSX API to disable IPsec. Using the NSX Controller CLI to disable IPsec is not supported.
  • Always verify that all controllers are active before you use the API to change the IPsec setting.

Issue 1306408: NSX Controller logs must be downloaded sequentially
NSX Controller logs cannot be downloaded simultaneously. Even when downloading from multiple controllers, you must wait for the download from the current controller to finish before you start the download from the next controller. Note also that you cannot cancel a log download once it has started.

Workaround: Wait for the current controller log download to finish before starting another log download.

Resolved Issues

See what's resolved in 6.2.6, or in 6.2.5 and earlier.

Issues Resolved in NSX 6.2.6

6.2.6 resolved issues are grouped as follows:

Installation and Upgrade Resolved Issues in NSX 6.2.6

  • Fixed Issue 1767149/1782802: If there is a cipher chain listed that is separated by commas (","), then upgrade from NSX for vSphere 6.1.x, 6.2.0, and 6.2.1 to NSX for vSphere 6.2.5 fails
    Starting 6.2.6, you can separate the ciphers with colons (":") instead of commas (",") before upgrade. Fixed in 6.2.6.

Networking and Edge Services Resolved Issues in NSX 6.2.6

  • Fixed Issue 1722988: NSX Edge OpenSSL package is not updated to 1.0.2j
    In 6.2.6, NSX Edge OpenSSL package is updated to 1.0.2j. Fixed in 6.2.6.

See what's resolved in 6.2.5 and earlier.

Issues Resolved in NSX 6.2.5

6.2.5 resolved issues are grouped as follows:

General Resolved Issues in 6.2.5 (Click to Expand or Collapse)

Logical Networking Resolved Issues in NSX 6.2.5 (Click to Expand or Collapse)

Networking and Edge Services Resolved Issues in NSX 6.2.5 (Click to Expand or Collapse)

Security Services Resolved Issues in NSX 6.2.5 (Click to Expand or Collapse)

The following issues were resolved in earlier 6.2.x releases:

General Resolved Issues in 6.2.4 and earlier (Click to Expand or Collapse)

Install and Upgrade Resolved Issues in 6.2.4 and earlier (Click to Expand or Collapse)

NSX Manager Resolved Issues in 6.2.4 and earlier (Click to Expand or Collapse)

Logical Networking and NSX Edge Routing Resolved Issues in 6.2.4 and earlier (Click to Expand or Collapse)

Edge Services Resolved Issues in 6.2.4 and earlier (Click to Expand or Collapse)

Security Services Resolved Issues in 6.2.4 and earlier (Click to Expand or Collapse)

Monitoring Services Resolved Issues in 6.2.4 and earlier (Click to Expand or Collapse)

Solution Interoperability Resolved Issues in 6.2.4 and earlier (Click to Expand or Collapse)

Document Revision History

20 August 2015: First edition for NSX 6.2.0.
17 December 2015: First edition for NSX 6.2.1.
04 March 2016: First edition for NSX 6.2.2. Security patch to address glibc vulnerability.
09 June 2016: First edition for NSX 6.2.3.
25 August 2016: First edition for NSX 6.2.4.
02 September 2016: Second edition for NSX 6.2.4. Added known issue.
09 September 2016: Third edition for NSX 6.2.4. Added known issue.
23 September 2016: Fourth edition for NSX 6.2.4. Moved 2 known issues to resolved.
06 October 2016: Fifth edition for NSX 6.2.4. Added known issues.
16 November 2016: Sixth edition for NSX 6.2.4. Added KB.
28 November 2016: Sixth edition for NSX 6.2.4. Changes to bug 1685894.
05 January 2017: First edition for NSX 6.2.5.
10 January 2017: Second edition for NSX 6.2.5. Added resolved issues.
02 February 2017: First edition for NSX 6.2.6.
21 February 2017: Second edition for NSX 6.2.6. Changes to bug 1772911.