4.6

Calculate the Number of Ephemeral Ports
You can calculate the number of ephemeral ports that are needed on each View Connection Server instance to
support a large number of concurrent client connections.
Procedure
u
Use the following formula.
Number of ephemeral ports = ( (5 x clients) / servers ) + 10
Where
clients
Projected number of concurrent client connections
servers
Number of View Connection Server instances in the replicated group
Example: Calculating the Number of Ephemeral Ports
For example, you might plan a deployment managed by three View Connection Server instances. If you
anticipate having 3,000 concurrent client connections, you would need 5,010 ephemeral ports, as shown in
Table 5-10.
Table 5-10. Example of Calculating the Number of Ephemeral Ports
Configuration Parameter Sample Values
Projected number of concurrent client connections 3,000
Number of View Connection Server instances in the
replicated group
3
( (5 x clients) / servers ) + 10 = number of ephemeral ports on
each View Connection Server
(5x3,000) / 3 + 10 = 5,010
What to do next
Use the “Worksheets for Calculating Ephemeral Ports and TCB Hash Table Size,” on page 67 to fill in values
for your deployment.
Increase the Number of Ephemeral Ports
You can edit the Windows registry to increase the maximum number of ephemeral ports on a Windows Server
computer on which View Connection Server runs.
Active Directory group policies can override registry entries. When possible, use a group policy to set the
maximum number of ephemeral ports on View Connection Server.
Prerequisites
Calculate the number of ephemeral ports to configure on the Windows Server computer. See “Calculate the
Number of Ephemeral Ports,” on page 64.
Modify the Windows registry value only if the resulting number of ports is greater than 4,000 on Windows
Server 2003 or greater than 16,000 on Windows Server 2008.
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