locked
NLB on HyperV RRS feed

  • Question

  • I have a IBM blade Servers and it is coonectd to SAN, it has team switches running Windows server on  HyperV , When i am trying to configure the NLB on the two windows 2008r2 servers NLB is not working?
    Team NICS but i can see only one NIC in my Virtual machines
    Sunday, June 19, 2011 9:57 AM

Answers

  • Hi Mateentaj;

    Do you want to configure NLB with between virtual machines or Hyper-V servers?


    I guess you want to configure a NLB between to virtual machines. If you use Unicast mode All virtual machines should have minimum two network adapter. One of them for NLB networking. Because NLB configuration is changing MAC address of netwrok adapter to the nlb MAC address.

    For NLB network adapter you should configure a "Enable spoofing of MAC addresses" option in to the virtual machine settings.

    • Edited by M. Hakan CAN Monday, June 20, 2011 5:15 AM add something
    • Marked as answer by Tim Quan Monday, July 11, 2011 6:02 AM
    Sunday, June 19, 2011 8:37 PM
  • Hello,

    I've had the best experience using unicast Windows NLB in conjunction with Hyper-V.  You'll need to enable MAC address spoofing for it to work.  If you intend to use multicast, you'll need to make the apprpriate switch / router changes.  Here is a procedure:

    http://blogs.technet.com/b/networking/archive/2010/02/12/cannot-access-the-virtual-or-dedicated-ip-address-of-an-nlb-node-guest-running-in-unicast-mode-on-windows-server-2008-r2-hyper-v.aspx

    Nathan Lasnoski


    http://blog.concurrency.com/author/nlasnoski/
    • Marked as answer by Tim Quan Monday, July 11, 2011 6:02 AM
    Monday, June 27, 2011 4:27 AM

All replies

  • Please provide more info about your setup
    Mohamed Fawzi | http://fawzi.wordpress.com
    Sunday, June 19, 2011 12:20 PM
  • Hi Mateentaj;

    Do you want to configure NLB with between virtual machines or Hyper-V servers?


    I guess you want to configure a NLB between to virtual machines. If you use Unicast mode All virtual machines should have minimum two network adapter. One of them for NLB networking. Because NLB configuration is changing MAC address of netwrok adapter to the nlb MAC address.

    For NLB network adapter you should configure a "Enable spoofing of MAC addresses" option in to the virtual machine settings.

    • Edited by M. Hakan CAN Monday, June 20, 2011 5:15 AM add something
    • Marked as answer by Tim Quan Monday, July 11, 2011 6:02 AM
    Sunday, June 19, 2011 8:37 PM
  • Hello,

    I've had the best experience using unicast Windows NLB in conjunction with Hyper-V.  You'll need to enable MAC address spoofing for it to work.  If you intend to use multicast, you'll need to make the apprpriate switch / router changes.  Here is a procedure:

    http://blogs.technet.com/b/networking/archive/2010/02/12/cannot-access-the-virtual-or-dedicated-ip-address-of-an-nlb-node-guest-running-in-unicast-mode-on-windows-server-2008-r2-hyper-v.aspx

    Nathan Lasnoski


    http://blog.concurrency.com/author/nlasnoski/
    • Marked as answer by Tim Quan Monday, July 11, 2011 6:02 AM
    Monday, June 27, 2011 4:27 AM