Microsoft KB Archive/231232

= SMS: Network Impact from Client Configuration Installation Manager (CCIM) During a 23-Hour Cycle =

Article ID: 231232

Article Last Modified on 10/27/2006

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APPLIES TO


 * Microsoft Systems Management Server 2.0 Standard Edition

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This article was previously published under Q231232



SUMMARY
In large network environments where computers are shut off each day, network performance issues may be observed when the computers are turned on each morning, even when logon scripts are not used. This behavior can be caused by the Client Configuration Installation Manager (CCIM) on several different computers going though a maintenance cycle at the same time.

The CCIM is a Systems Management Server (SMS) client component that is responsible for ensuring that each client is correctly installed and assigned to the correct site. Another benefit of the CCIM cycle is that changes to the Client Agents performed in the SMS Administrator Console are automatically propagated to the clients during the cycle. The CCIM also keeps the client data and the SMS site server data synchronized by creating discovery data records and determines which optional components should be installed.

During the CCIM cycle, there is usually nothing copied between the Client Access Point (CAP) and the client, except when the Client Agents have changed or when a discovery record (heartbeat discovery) needs to be sent to the site server through the CAP.



MORE INFORMATION
Initially, the CCIM cycle is set to occur every 23 hours, starting with when the client software was installed. However, if a computer misses the CCIM cycle because it is turned off, the CCIM runs at power-up (for Microsoft Windows NT and Windows 2000 computers) or logon (for Windows 95 and Windows 98 computers), regardless of the 23-hour cycle. The 23-hour cycle is then computed from the power-up or logon time, unless the computer or the SMS Client Service is restarted during the day. Changing the CCIM interval does not alter this behavior.

For a user who logs on at 8:00 A.M. each morning, the CCIM interval is set to 7:00 A.M. the next day (23 hours later). If the computer is not powered-up (Windows NT and Windows 2000 computers), or the user is not logged on (Windows 95 and Windows 98 computers) at 7:00 A.M. the next day, CCIM wakes up only when the user powers-up or logs on at 8:00 A.M.

If several computers are powered up each morning at approximately the same time, the network traffic generated by each computer, although minimal, may be compounded so that there is a noticeable effect on the network.

On large sites and for scalability reasons, it is recommended that you lock your workstation rather than logging off or shutting down; doing so helps minimize network traffic.

Additional query words: prodsms

Keywords: kbcap kbclient kbconfig kbdiscovery kbinfo kbnetwork kbnofix kbserver KB231232

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