From: Li Xiao Shawn NCS (xiaoshawn@ncs.com.sg)
Date: Mon Sep 22 2008 - 00:46:07 ART
Hi,
I only tested the pim join for share tree where the receiver join
towards the RP.. below is a simple illustration:
Receiver---R1========R2(RP)-------R3
R1 and R2 is having two equal cost P2P link, with nw 1.1.12.0/24
and 1.1.21.0/24. the finding is.. when ip igmp join command is
configured on R1, the pim join only send on 1.1.21.0 link with upstream
neighbor being 1.1.21.2 (r2 ip).
When the 1.1.12.0 link was changed to 1.1.121.0, immediately we
see the pim join message being sent to 1.1.121.0 link and the upstream
neighbor becomes 1.1.121.2. So.. seems like when you have equal cost to
the RP, the highest IP link wins? Have not tested the SPT though..
Best regards,
Shawn
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
ehiwe peter
Sent: 22 September 2008 03:55
To: ccielab@groupstudy.com
Subject: MULTICAST QUESTION
HI ,
Just wondering
If a router has 2 paths to an upstream multicast source of equal
unicast cost on what interface will the multicast traffic be received
or what will be the RPF interface and can load balancing of multicast
traffic be acheived as well?
Thanks
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