dross333 asked on
Windows 2008 NLB issues on Vmware
HI,
I am having some very time consuming issues in trying to get NLB working. Any suggestions would be appreciated.
I am trying to load balance two Windows 2008 servers running Exchange 2007 CAS/HUB roles on VMware ESX 4
I have tried both unicast and multicast and both have issues as noted below.
Multicast:
2 Nics - 1 for Public and 1 for NLB - (no GW or DNS on NLB interface)
Forwarding has been enabled on the NLB nics
Static ARP entry has been added for the Cluster IP
Issue: I can get to all IPs (real NLB NICs and Cluster IP) from same subnet. I can get to real IP’s from another network. I CANNOT get to cluster IP from remote network.
Unicast:
2 Nics - 1 for Public and 1 for NLB - (no GW or DNS on NLB interface)
Forwarding has been enabled on the NLB nics
VMware setting for notify switch has been changed to No. (as per VMware Documentation)
Issue: I can get to all IPs (real NLB and Cluster IP) from remote networks. I CANNOT get to cluster IP, or the primary real IP from same network. I can get to non primary NLB IP from same network.
As you can see from the above, I am having issues with both settings. I would prefer to get the multicast working
Thanks
I am having some very time consuming issues in trying to get NLB working. Any suggestions would be appreciated.
I am trying to load balance two Windows 2008 servers running Exchange 2007 CAS/HUB roles on VMware ESX 4
I have tried both unicast and multicast and both have issues as noted below.
Multicast:
2 Nics - 1 for Public and 1 for NLB - (no GW or DNS on NLB interface)
Forwarding has been enabled on the NLB nics
Static ARP entry has been added for the Cluster IP
Issue: I can get to all IPs (real NLB NICs and Cluster IP) from same subnet. I can get to real IP’s from another network. I CANNOT get to cluster IP from remote network.
Unicast:
2 Nics - 1 for Public and 1 for NLB - (no GW or DNS on NLB interface)
Forwarding has been enabled on the NLB nics
VMware setting for notify switch has been changed to No. (as per VMware Documentation)
Issue: I can get to all IPs (real NLB and Cluster IP) from remote networks. I CANNOT get to cluster IP, or the primary real IP from same network. I can get to non primary NLB IP from same network.
As you can see from the above, I am having issues with both settings. I would prefer to get the multicast working
Thanks
Windows Server 2008Exchange
Last Comment
dross333
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ask a questionRagu Ramachandran
On both the NLB nodes, run this command in the command prompt and let us know the result: wlbs display
ASKER
dross333
Well, qfter looking into this further ( based on your info) turns out I had a typo in my ARP entry. I corrected that and everything is now working.
Thanks Much
Thanks Much
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