From: Mark Stephanus Chandra (mark.chandra@gmail.com)
Date: Wed Jul 02 2008 - 14:47:17 ART
Hi all,
I have a question About Multicast
Topology :
R1-----FRAME RELAY Point to Point ------R3----ethernet---SW2---ethernet ip
igmp join group 239.23.23.23
R3 is the autorp and the mapping agent.
I can do ping from R3 to the group 239.23.23.23
But I cannot ping it from R1 :
R1#sh 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
(*, 239.23.23.23), 00:01:07/stopped, RP 150.1.3.3, flags: SP
Incoming interface: Serial1/0, RPF nbr 162.1.13.3
Outgoing interface list: Null
(162.1.13.3, 239.23.23.23), 00:01:07/00:01:54, flags: PT
Incoming interface: Serial1/0, RPF nbr 0.0.0.0
Outgoing interface list: Null
(*, 224.0.1.39), 01:43:48/stopped, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial1/0, Forward/Sparse-Dense, 01:43:48/00:00:00
(150.1.3.3, 224.0.1.39), 00:02:34/00:00:25, flags: PT
Incoming interface: Serial1/0, RPF nbr 162.1.13.3
Outgoing interface list: Null
(*, 224.0.1.40), 01:44:28/stopped, RP 0.0.0.0, flags: DCL
R1#sh ip pim rp
Group: 239.23.23.23, RP: 150.1.3.3, v2, v1, uptime 01:38:37, expires
00:02:17
R1#ping 239.23.23.23
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 239.23.23.23, timeout is 2 seconds:
.
R1#
R1#mtrace 162.1.13.1 239.23.23.23
Type escape sequence to abort.
Mtrace from 162.1.13.1 to 162.1.13.1 via group 239.23.23.23
From source (?) to destination (?)
Querying full reverse path... * switching to hop-by-hop:
0 162.1.13.1
-1 * * * Timed out receiving responses
Perhaps no local router has a route for source, the receiver is not
a member of the multicast group or the multicast ttl is too low.
Can you guys figure it out why I cannot ping the group address
Mark Stephanus Chandra
IT Consultant
This archive was generated by hypermail 2.1.4 : Mon Aug 04 2008 - 06:11:53 ART