[c-nsp] Multicast

M K gunner_200 at live.com
Mon Apr 15 04:53:20 EDT 2013

The Unicast routing table is fine , I have checked all OSPF enabled and routes are advertised correctlyI am wondering if R3 is suffering from RPF check , why the rp mapping appeared ?
R3#sh ip rpf information for ? (  RPF interface: GigabitEthernet0/0.34  RPF neighbor: ? (  RPF route/mask:  RPF type: unicast (ospf 9)  Doing distance-preferred lookups across tables  RPF topology: ipv4 multicast base, originated from ipv4 unicast base
R6#sh ip rpf failed, no route existsR6#ping souR6#ping source lo0Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to, timeout is 2 seconds:Packet sent with a source address of !!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 8/20/52 ms

From: gunner_200 at live.com
To: cisco-nsp at puck.nether.net
Subject: Multicast
Date: Mon, 15 Apr 2013 09:21:19 +0300

Hi allI have the below topology
R2 -- R3 --  R5 |       |       |R7 -- R4 -- R6
I have enabled multicast-routing on all the topology (ip pim sparse-mode on all interfaces)I have configured R7 to be my RP
ip pim bsr-candidate Loopback0 0ip pim rp-candidate Loopback0 priority 200
Now , the issue is on R3 i have turned on R3 debug ip pim bsr
R3#sh ip pim rp mapping PIM Group-to-RP Mappings
Group(s)  RP (?), v2    Info source: (?), via bootstrap, priority 200, holdtime 150         Uptime: 07:48:54, expires: 00:02:27
I can see the rp mapping but in the log messages
*Apr 15 09:10:07.395: PIM-BSR(0): bootstrap ( on non-RPF path GigabitEthernet0/0.23 or from non-RPF neighbor discarded*Apr 15 09:10:07.399: PIM-BSR(0): bootstrap forwarded on Loopback0*Apr 15 09:10:07.403: PIM-BSR(0): bootstrap forwarded on GigabitEthernet0/0.23*Apr 15 09:10:07.403: PIM-BSR(0): bootstrap forwarded on GigabitEthernet0/0.35*Apr 15 09:10:07.407: PIM-BSR(0): bootstrap ( on non-RPF path Loopback0 or from non-RPF neighbor discarded
On R5 and R6 , i cannot see any informationR5#sh ip pim rp mapping PIM Group-to-RP Mappings

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