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Heartbeat configuration for Network Load Balancing in Windows Server2003

Hi,
I am currently trying to configure heartbeat between two Network Load Balanced Servers.
Both servers run Win 2003 Server Enterprise.
Each server has two NIC's.
One NIC on each server is configured for the cluster.
One NIC on each server is connected to seperate management VLAN.
I am using Network Load Balancing Manager to configure the servers, and each of the two servers seem to be OK, both of them converging.
I do not see Heartbeat mentioned anywhere in Network Load Balancing Manager - what am I missing here?

Thanks for any help
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llewellyn
Asked:
llewellyn
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1 Solution
 
Chris DentPowerShell DeveloperCommented:

Running in Unicast mode?
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llewellynAuthor Commented:
IGMP Multicast
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Chris DentPowerShell DeveloperCommented:

For a heartbeat you must be running in Unicast mode. This will require an additional NIC in each server in the Cluster.
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Chris DentPowerShell DeveloperCommented:
hehe

> This will require an additional NIC in each server in the Cluster.

But you already said they had that ;)
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llewellynAuthor Commented:
Thanks.
So if I change to Unicast mode, how do I configure the heartbeat for the second NIC?
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Chris DentPowerShell DeveloperCommented:
As far as I remember you just set it to Unicast on the first server, then reboot the lot of them.

Afraid I don't have a cluster here I can check the exact details on, can probably find one somewhere if you're stuck though?
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oBdACommented:
There is no dedicated heartbeat connection in NLB as there is for a server cluster. Of course, the NLB cluster members exchange heartbeat packets as well, but that happens over the NLB NIC.
Maybe of help for you:
Network Load Balancing: Frequently Asked Questions for Windows 2000 and Windows Server 2003
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/clustering/nlbfaq.mspx
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oBdACommented:
There's definitely no heartbeat configuration possible; from the FAQ:
"Q. Do the Heartbeats Need to Go on a Back-End Network?      
A. No, heartbeats are transmitted through the same network interface on which load balancing occurs. This cannot be changed."
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