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Multicasts through Port-Channel

Obviously we have a strange problem !

We interconnected two Cat6K Switches with Etherchannels. One Cat6K is used for the Access Devices which are connected to VLAN 40.

A device sends out a multicast (239.0.0.1) which is received on the CAT6K Port but obviously is NOT forwarded on the Ether-Channel Uplink to the other Cat6K (as long as the Ether-Channel is active with 2 physical links).

As soon as one link is disabled all the multicast-packets are forwarded (on the UPLINK) but when the second physical link is enabled again, packets are dropped.

But I am not sure, why those packets are dropped.

I would appreciate any help.

thx

hans

Scenario:

CAT6K (fully-IOS) ==========CAT6K(CatOS)----------AccessDevice

1 REPLY
Silver

Re: Multicasts through Port-Channel

As per myknowledege, this should not occur.

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