[c-nsp] strange multicast behavior on 6509

Christian Malo chris at fiberpimp.net
Wed Apr 27 11:26:47 EDT 2005


Every 5 mins (exactly) I get:

2005 Apr 27 11:20:02 %MCAST-6-DELGDA:Deleting a GDA 01-00-5e-1c-63-02 in vlan 991
2005 Apr 27 11:20:02 %MCAST-6-DELGDA:Deleting a GDA 01-00-5e-1c-63-03 in vlan 991
2005 Apr 27 11:20:02 %MCAST-6-DELGDA:Deleting a GDA 01-00-5e-1c-63-05 in vlan 991


There's actually more than that (1 per mcast group).

Vlan 991 is where the streaming sources are. So everytime it does it, the
6509 starts sending all the mcast traffic to every port in that vlan
(including trunks) for a short period of time.

Since it's acting like IGMP snooping wasn't working during this short
period of time, I'm wondering what can be done.


I'm currently running catos 7.6.9 with igmp v3 enabled.


thanks


-chris


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