Network interface card (NIC) teaming is enabled
Topic Last Modified: 2006-10-16
The Microsoft® Exchange Server Analyzer Tool queries the Win32_NetworkAdapter Microsoft Windows® Management Instrumentation (WMI) class for all network interface cards (NIC) that are bound to the TCP/IP protocol.
The Exchange Server Analyzer then queries the following registry branch to determine whether the TeamAdapters key exists for those adapters:
If the Exchange Server Analyzer determines that the TeamAdapters key exists for one or more NIC on the server that is being analyzed, the Exchange Server Analyzer displays a warning.
This warning indicates that NIC teaming is enabled on the Exchange server that is being analyzed. Although NIC teaming is generally not a mail flow issue, care should be taken to make sure that teaming is configured correctly with the most recent NIC drivers available.
To address this issue:
If mail flow issues occur on the server that has NIC Teaming enabled, temporarily disable Teaming to see whether the mail flow issue is resolved.
Update the NIC drivers to the latest available from the NIC manufacturer.
Strictly follow the Teaming configuration recommendations of the NIC manufacturer.
For more information about NIC teaming, see the following Microsoft Knowledge Base articles:
278431, "Using teaming adapters with network load balancing may cause network problems" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=278431).
814607, "Microsoft support for server clusters with third-party system components" (http://go.microsoft.com/fwlink/?linkid=3052&kbid=814607).