Multicast on 6500 vs unmanaged switch

Unanswered Question
Apr 15th, 2010

I have a dumb (unmanaged 8-port Linksys Gig switch) which we are currently using for some linux clustering servers. It works fine, but I want to move the servers to our 6500.  When I moved them from the switch to our 6500, the cluster breaks because apparently I don't have multicast enabled properly for the servers.  Each server has 3 NIC interfaces, (Production network routed, iSCSI private, and metadata (multicast) private) so one physical port is residing on it's own VLAN. All server interfaces are static IP assignments. The other 2 VLANs are working properly, the metadata VLAN seemingly is breaking the cluster because they can't communicate via multicast. Vlan 999 is for the clustering metadata, and is defined as a VLAN, but not as an interface VLAN as I'm assuming I don't need any L3 features.

What do I need to do configure my 6500 ports to act like a dumb switch?

Global Config:

ip multicast-routing

port config:

interface GigabitEthernet4/33

switchport

switchport access vlan 999

spanning-tree portfast

!

I have this problem too.
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