At the moment we are having an issue with NLB Multicast on a Windows 2008 R2 server in combination with a 1000V. We are trying to setup that the multicast mac address is dynamicly learned by the Nexus 7k Coreswitch so that a static arp entry is not needed. The configuration is as follows:
- 2 VM's with Windows 2008 R2
- Cluster with NLB and option IGMP Multicast enabled
- Nexus 1000V and IGMP snooping disabled
- Nexus 5k where the UCS bladecenter is connected.
- Nexus 7K core switch (5.2(7))
On the nexus 7K we configured a IGMP querier under the vlan where the VM's are located, we see this also back in the "show ip igmp snooping querier" command :
1# show ip igmp snooping explicit-tracking
Vlan IP Address Version Expires Port
32xx 10.122.xx.x v3 00:00:03 Switch querier
The problem is that the 7K is not learning the NLB address dynamicly, I would expect that the querier will make sure that the mac address is learned on the VLAN. Does anyone have any experience with learning NLB mac addresses on a nexus 7K?
When configuring a static arp under the VLAN its working but then we have the issue that all the traffic is flooded over the segment, something that is not desirable.
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