From: dfredrick@gmail.com
Date: Sun Aug 27 2006 - 16:10:50 ART
Hi...
I have this configuration...
(R4)
\s0/0
\~~~~~
( ) <rp> <ma>
( )-----(R1)-----(R3)
( ) s0/0 s1/0
/~~~~~
s0/0 /
(R5)
The problem is R4 and R5 are not seeing an RP...
Rack1R5#sho ip pim rp map
PIM Group-to-RP Mappings
Rack1R5#
This configuration requires RPs to be map via Auto-RP.
I used enabled sparse-mode and nbma-mode on r1,r4, and r5 s0/0 interfaces.
I enable ip pim autorp listener on r1, r4 and r5 as well.
========================================================================
Rack1R5#sho ip mroute
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
L - Local, P - Pruned, R - RP-bit set, F - Register flag,
T - SPT-bit set, J - Join SPT, M - MSDP created entry,
X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report,
Z - Multicast Tunnel, z - MDT-data group sender,
Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 224.0.1.39), 00:18:35/stopped, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0, Forward/Sparse, 00:18:35/00:00:00
(150.1.1.1, 224.0.1.39), 00:00:10/00:02:49, flags: PTX
Incoming interface: Serial0/0, RPF nbr 174.1.145.1
Outgoing interface list: Null
(*, 224.0.1.40), 00:18:44/00:02:27, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0, Forward/Sparse, 00:18:45/00:00:00
===========================================================================
I even tried putting the MA on R1... still not seeing an RP...
I am sure there is something simple I am overlooking.
Is there any good multicast troubleshooting sites? Or good mulitcast books? I read Jeff Doyle's Routing TCP/IP book. But I am still multicast dumb apparently.
Any help would be appreciated.
Thanks,
Dan
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