From: wim.depauw@getronics.com
Date: Mon Feb 18 2008 - 17:07:26 ARST
Hi,
In one of the the mock labs you get a the following question :
When R2 joins a multicast group, R5 ( which is RP and MA) is sending the traffic also to R1.
R5 is the hub and R1/R2 are the spokes in a FR cloud , and all the devices are in the same subnet.
The task is to resolve this issue.
I tried to simulate this problem by configuring on R2 an igmp join-group and pinging from R5 to the address but I'm not seeing my packets on R1 ( did a debug ip packet and debug ip mpacket ) .
How does it comes that he's sending the packets to both routers? when I do a debug ip igmp I see clearly that the IGMP reports has the router IP addres which sends the request.So he should send it only to the requested router.
Any suggestions ?
By the way the solution is using ip pim nbma-mode ...
gr
wim
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