From: Michael Zuo (mzuo@ixiacom.com)
Date: Sun Dec 03 2006 - 00:23:30 ART
Hi group
After the MSDP peer is up and correct multicast source info received
thru SA, what kind debug steps do I need to perform if multicast ping
"ping 239.1.1.1" from source is not successful (I've checked a number of
things below)? How do I check if the peer/RP associated with the source
is forward traffic?
Thanks a lot...
Rack1R3#sh ip ms pee
MSDP Peer 1.1.1.1 (?), AS 100
Connection status:
State: Up, Resets: 0, Connection source: Loopback0 (3.3.3.3)
Uptime(Downtime): 00:28:53, Messages sent/received: 31/33
Output messages discarded: 0
Connection and counters cleared 00:29:21 ago
SA Filtering:
Input (S,G) filter: none, route-map: none
Input RP filter: none, route-map: none
Output (S,G) filter: none, route-map: none
Output RP filter: none, route-map: none
SA-Requests:
Input filter: none
Peer ttl threshold: 0
SAs learned from this peer: 2
Input queue size: 0, Output queue size: 0
Rack1R3#
Rack1R3#sh ip ms sa
MSDP Source-Active Cache - 2 entries
(4.4.4.4, 239.1.1.1), RP 1.1.1.1, BGP/AS 0, 00:21:53/00:02:57, Peer
1.1.1.1
(150.1.14.4, 239.1.1.1), RP 1.1.1.1, BGP/AS 0, 00:20:55/00:01:01, Peer
1.1.1.1
Rack1R3#
Rack1R3#sh ip pim rp
Group: 239.1.1.1, RP: 3.3.3.3, next RP-reachable in 00:00:18
Group: 224.0.1.40, RP: 3.3.3.3, next RP-reachable in 00:00:43
Rack1R3#sh ip mr
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
(*, 239.1.1.1), 00:25:27/00:02:35, RP 3.3.3.3, flags: SJCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Loopback0, Forward/Sparse, 00:25:27/00:02:35
(*, 224.0.1.40), 00:37:26/00:02:33, RP 3.3.3.3, flags: SJCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Loopback0, Forward/Sparse, 00:37:26/00:02:33
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