IGMP Question

[bret]

I have a 3750 running IPSERVICES 12.2(55)SE9. On this single switch I have 2 websense servers connected to the same VLAN and need to establish a cluster between the two servers. The two servers use IGMPv3 to do this, but we cannot establish a peer relationship with IGMP enabled globally.

Troubleshooting the issues I have found that when IGMP snooping is disabled globally the peers connect. With IGMP snooping disabled globally and IGMP enabled on the VLAN the peers connect. Has anyone run into this issue,or have configuration suggestions to establish this peer with IGMP snooping enabled globally?

Thanks in advance,

Bret

[kerstin-534]

Hi Bret,

you need an igmp querier in the vlan enabled. (somebody who asks if there are receivers).

IGMP Membership Reports werden nur an Interfaces weitergeleitet, an denen zuvor ein IGMP Query empfangen wurdeI don't know which OS you have.

With GNU/Linux

echo "1" > /sys/class/net/br0/bridge/multicast_querier

There is also a workaround within the IOS. There is a good link

http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/68131-cat-multicast-prob.html

br Fritz

[bret]

I added ip pim sparse-dense-mode and it did the trick.