My cluster is large and some SIMs are failing to connect to the SSM with error -64. How do I configure the system to avoid this problem?

This problem may be observed when the SSM runs on Windows 2000 Server and Windows 2003 Server. Adding the following values to the system registry, will enable your SSM host to accept more connections.
Note: If your computer already has some or all of the keys set, they must be adjusted to the new values only if each of your old values is older than the corresponding new one. Refer to http://msdn.microsoft.com/en-us/library/aa302363.aspx for more information
Add these values to the system registry:
  1. Create four new DWORD values under HKLM\System\CurrentControlSet\Services\AFD\Parameters:
    Value Value data
    EnableDynamicBacklog 1
    MinimumDynamicBacklog 20 (decimal)
    MaximumDynamicBacklog 6144 (decimal)
    DynamicBacklogGrowthDelta 10 (decimal)
  2. Create two new DWORD values under HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters:
    Value Value data
    MaxUserPorts 10000 (decimal)
    TcpTimedWaitDelay 60 (decimal)