Definition updates are using all available bandwidth and causing the network to slow down or stop.
All systems check-in at the same time (all systems started using Wake On LAN), causing excessive bandwidth usage.
After the definitions update and start to push out to client computers network resources are rapidly used and the network slows or stops responding.
Unlimited use of network resources to provide content updates (definitions and policy) to clients using IIS.
Adjust the maximum bandwidth setting in IIS to a value that is less than the slowest WAN connection.
Configure IIS Performance Options:
Limit bandwidth usage in one of two ways:
Adjust Bandwidth throttling.
Modify the total number of web site connections:
Note: when setting max connections for the site make sure to include enough connections to allow the manager to function as well (The SEPM-Console uses 3 connections when open).
Note: If the SEPM is installed to the default web site it is possible that connectivity to other content within that site will become unavailable until a connection is released for use.
For IIS 6: (under the heading "basic website configuration")
How to Configure a Computer Running Windows Server 2003 as a Web Server: http://support.microsoft.com/kb/324742
For IIS 4 and 5:
HOW TO: Use Bandwidth and Process Throttling to Limit Web Server Resources: http://support.microsoft.com/kb/321625