On Sep 18, 2009, at 3:04 AM, Alexander Clouter wrote:

I personally remove the standby priorities from the VLAN configs as the
'active' router will be the one with the higher IP address...which is
*also* the rule for PIM.

What is probably happening is the PIM router for the subnet is your
standby router and you are being hit with a lot of reverse path
filtering issues[1].

Also, in addition to the higher ip address tiebreaker, you can
set the DR priority:

primary:
 ip pim dr-priority 4294967294

standby:
 ip pim dr-priority 2147483647  (or whatever)

This is very helpful if someone attaches a pim speaking device
and your ip addresses are at the bottom of the range rather than
the top.

Dale

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