After you have configured a vCenter Server system or an ESX/ESXi host to send traps, you must configure your management client software to receive and interpret those traps.
To configure your management client software, you must specify the communities for the managed device, configure the port settings, and load the VMware MIB files. Refer to the documentation for your management system for specific instructions for these steps.
To complete this task, you must download the VMware MIB files from the VMware Web site: http://communities.vmware.com/community/developer/managementapi.