Windows 2003 network load balance

Discussion in 'Server Networking' started by Sandy Ryan, Feb 20, 2005.

  1. Sandy Ryan

    Sandy Ryan Guest

    ok - i have 2 servers that I want to cluster using NLB.
    Each server has 3 network cards.
    1 NIC is for the external (clustered) IP
    1 NIC for internal traffic
    1 NIC for management - the cluster heartbeat should go on this one.
    I configured a static ip for the cluster - and the private IPs were the
    existing static ip of the cards that are clustered.
    the problem is where do i tell it to use another nic for the heartbeat? it
    appears from looking at the activity light on the system that it is doing the
    heartbeat on the cluster IP -- which is an external IP and that's not good

    thanks for the help.
    Sandy Ryan, Feb 20, 2005
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  2. Sandy Ryan

    Todd J Heron Guest

    3 NICs? That doesn't sound right. Often, there is not even a business need
    for 2 NICs and you are wanting to go with 3. If I were you I would ask over
    in However, I'll leave you with
    this for now.

    Quoted from:

    Multiple NICs in cluster nodes

    Windows 2000:

    . If you have 2 NICs on different subnets then the NIC to which NLB is
    bound should have default gateway and the routing tables need to be
    reconfigured to make all traffic go thru the NLB NIC. Default gateway
    setting on the other NIC should be blank.

    . If you have 2 NICs on the same subnet you will need to configure the
    NIC to which NLB is bound with the default gateway. The other NIC should not
    have a default gateway configured. No need to hack routing tables.

    . Recommendation is to use one NIC in each node unless there is a
    business need for 2 NICs

    Windows Server 2003

    . If you have 2 NICs different subnets you can choose to bind NLB to
    either or both NICs without any issues. All traffic will go thru the correct
    NIC (subnet)

    . If you have 2 NICs on the same subnet traffic will be routed
    Todd J Heron, Feb 21, 2005
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