From: Scott Strobeck (scott@strobeck.net)
Date: Sat Aug 09 2008 - 11:35:00 ART
Hi Anant,
autoRP only works with sparse-dense mode. If you're running sparse and
want to do 'automatic' mapping, you have to use bsr. The reason is that
the autoRP feature uses dense mode mcast to propagate.
I actually did a write up explaining this and some other issues with
mcast on ccie.net. . .
http://www.ccie.net/blogs/clarifying-multicast-automatic-rp-configurations
Scott
Anant Tamgole wrote:
> Hi,
>
> I have a scenario where
> 1. R1 is hub and R2,R3 spokes.
> 2. OSPF is running on main interfaces as NBMA mode.
> 3. AutoRP is running on Hub R1.
> 4. igmp join for 224.1.1.1 is on R3's ethernet.
>
> Problem: Not able to ping 224.1.1 from R1. If I give reapeat count 10, first
> ping succeeds but then it stops,
> From R1 to R3 ping is ok.
>
> I tried with ip pim nbma mode on Hub and ip pim spt-threshold infinity on R3
> , It does not help.
>
>
>
> Anant
>
>
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