View Manager uses ephemeral ports to establish TCP connections between View Connection Server and the View desktops that it administers. To support a large View desktop deployment, you can increase the number of available ephemeral ports.

An ephemeral port is a short-lived endpoint that is created by the operating system when a program requests any available user port. The operating system selects the port number from a predefined range, typically between 1024 and 65535, and releases the port after the related TCP connection terminates.

By default, the system can create a maximum of approximately 4,000 ephemeral ports that run concurrently on Windows Server 2003 and approximately 16,000 on Windows Server 2008.

On 32-bit Windows Server 2003 computers, you should increase the number of available ephemeral ports if a View Connection Server instance is likely to use more than 800 concurrent client connections.