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Windows 2003 NLB Not Routed Through Cisco Switch

Posted on 2008-10-06
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Last Modified: 2008-10-07
I am having the exact same problem to the issue described here:
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Windows/2000/Q_23115937.html

Basically, we have set up MS NLB for two Windows 2003  webservers on a 192.168.8.x range.  The server addresses are 8.2 and 8.3, and the NLB address is 8.4.  We are using multicast, as the servers must be able to communicate with one another.  I have a Cisco Catalyst 3550 L3 switch, which routes traffic using a single VLAN set up with a primary .8.x address and secondary addresses for .10.x and .12.x.  I can ping both servers from any of the above subnets (because their gateway is the L3 switch), but I can only ping the NLB address from the 8.x subnet.  I need this to communicate across all of the subnets on the above VLAN.  The solution given in the above thread was to put the NLB in a separate VLAN.  Could someone explain what he meant specifically, or how I can solve this issue with the equipment I have?  Do create another VLAN on the L3 switch with a different subnet (say, 192.168.20.1) and set the NLB address to 20.x?  Any help would be much appreciated, and specific commands or instructions would be a bonus.

Thanks in advance.
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Question by:hachemp
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Quori earned 500 total points
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by:hachemp
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Wow, this looks like exactly what I needed.  I'll try it tomorrow and let you know how it goes.  Thanks.
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by:kyleb84
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by:hachemp
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Quori, that was what I needed, thanks.  Thanks to Kyle as well.
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