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NIC stops responding RRS feed

  • Question

  • If I do a VM backup of my Hyper-V Cluster the NIC on my DPM 2010 box stops responding. The only way I can get it to start working is by rebooting.

    I"m able to do SQL and Share backups fine. What's causing this?

    Wednesday, August 17, 2011 12:58 PM

Answers

  • I would investigate the NIC's to start.  Do you have the latest drivers and firmware?  You can also try disabling RSS and TCP Chimney offload in the OS and on the adapter per the steps in 951037 - "Information about the TCP Chimney Offload, Receive Side Scaling, and Network Direct Memory Access features in Windows Server 2008" at http://support.microsoft.com/default.aspx?scid=kb;EN-US;951037.
     
    After that you should look at the guidelines for configuring cluster networks for CSV redirected access in 2473194 - "System Center Data Protection Manager 2010 Hyper-V protection: Configuring cluster networks for CSV redirected access" at http://support.microsoft.com/default.aspx?scid=kb;en-US;2473194.

    • Marked as answer by Carltonw1 Wednesday, August 24, 2011 1:22 PM
    Tuesday, August 23, 2011 10:27 PM
    Moderator

All replies

  • Hi,

    where is your DPM server located? Is it the Hyper-V host or is it one of the VM or other ?

    Thursday, August 18, 2011 9:33 AM
  • My DPM server is a physical server (Dell Power Edge 2950 w/BroadCom NIC), nothing else is running on this server. I also found out that if I backup individual VM's it works fine, but if I backup more than one VM at a time it locks the NIC card.

     

    Thursday, August 18, 2011 11:57 AM
  • I would investigate the NIC's to start.  Do you have the latest drivers and firmware?  You can also try disabling RSS and TCP Chimney offload in the OS and on the adapter per the steps in 951037 - "Information about the TCP Chimney Offload, Receive Side Scaling, and Network Direct Memory Access features in Windows Server 2008" at http://support.microsoft.com/default.aspx?scid=kb;EN-US;951037.
     
    After that you should look at the guidelines for configuring cluster networks for CSV redirected access in 2473194 - "System Center Data Protection Manager 2010 Hyper-V protection: Configuring cluster networks for CSV redirected access" at http://support.microsoft.com/default.aspx?scid=kb;en-US;2473194.

    • Marked as answer by Carltonw1 Wednesday, August 24, 2011 1:22 PM
    Tuesday, August 23, 2011 10:27 PM
    Moderator
  • It was the onboard BroadComm on my Dell PowerEdge 2950. I should have known I've had issues before with these NICs. I downloaded and installed the latest driver and it works now. thanks.
    Wednesday, August 24, 2011 1:22 PM