hi all
i meet a trouble, i connect two router through a catalyst switch. eigrp
neighbor established very interestin. some time established and some time
tear down.
when i debug ip igsn in switch,i found igmp protocol create
0100.5e00.000a some time and delete 0100.5e00.000a,and other all groups also
deleted and recreate at same time.when 0100.5e00.000a is deleted, eigrp
neighbor can established ,and when 0100.5e00.000a is recreated ,eigrp can't
established neighbor
i type show mac static and i can see 0100.5e00.000a entry ,but link to
another port which not belonged to link two router port.
this is interesting,it seems a multicast workstation configed
225.0.0.10 or same like map to 0100.5e00.000a.
but i don't know why the multicast group deleted all and recreated.
and another question does eigrp multicast address 224.0.0.10 ospf
224.0.0.5 224.0.0.6 attend igmp multicast group? when i show mac static
in my lab i can't see 0100.5e00.000a entry. i think such as 224.0.0.10
224.0.0.5 don't attend any multicast group ,and controlled by igmp,cgmp.
is that right, when switch received a 224.0.0.10 packet,how about it
transfer this packet when switch igmp snoop is enabled
thank you
i will find why all igmp group is deleted and recreated.it said
topology changed!
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