From: ricky ong (longwaydown@live.com)
Date: Fri Sep 19 2008 - 03:37:53 ART
Hi all,
I got some problems when working on IEWB VOL2 4.1 LAB 12 Q6.3. The question calls for anycast RP configuration. After configuring i realized that I can ping a multicast group joined on R6 from SW2 (225.26.26.26). I got the MSDP peer up but it seems that multicast routing table is not exchanged between the two MSDP peer (R4, R5).
I referred to the solution guide and was a bit surprised to find the below explanation:
"When R4's lo is up, sw2 will not be able to ping 226.26.26.26 since the group is using R4 as RP and sw2 is using R5 as RP."
Yes this is a problem, but isn't it the reason why MSDP is configured?
"Now we will shutdown R4's lo which will mean R6 will use R5 as the RP "
How can we provide RP redundancy then if multicast can not flow with two RP up at the same time?
Thanks in advance for any advise
Cheers
Ricky
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