12-30-2007 06:56 AM - edited 03-05-2019 08:12 PM
Hi all,
R5 is hub and R2 and R4 are spokes . i have to use ip pim autorp listner command on all the routers. R5 loopback is the the rp .
The problem i am having is that when i ping from R2 to R4 igmp group 224.1.1.1 i get first two replies but rest time out ?? why is this happening .
i need real help
Here is my config ,
R2
ip multicast-rou
int fas0/0
ip pim sparse-mode
int ser0/0.25
ip pim sparse mode
ip pim auto-rp listner
R5
ip multicast-rou
int lo0
ip pim sparse-m
int ser0/0
ip pim sparse-mo
ip pim nbma-mode
ip pim auto-rp listner
ip pim send-rp-announce Loopback0 scope 16 group-list 10
ip pim send-rp-discovery Loopback0 scope 16
access-list 10 per 224.1.1.1
access-list 10 per 224.2.2.2
R4
ip multicast-rou
int ser0/0
ip pim sparse-mo
int fas0/0
ip pim sparse-mo
ip igmp join-g 224.1.1.1
ip igmp join-g 224.2.2.2
ip pim auto-rp listner
ON R2 some outputs
R2#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
(*, 224.2.2.2), 00:03:23/stopped, RP 5.5.5.5, flags: SP
Incoming interface: Serial0/0.25, RPF nbr 5.5.245.5
Outgoing interface list: Null
(5.5.245.5, 224.2.2.2), 00:03:23/00:00:03, flags: PT
Incoming interface: Serial0/0.25, RPF nbr 0.0.0.0
Outgoing interface list: Null
(*, 224.0.1.39), 00:29:24/00:02:55, RP 0.0.0.0, flags: DC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0.25, Forward/Sparse, 00:29:25/00:00:00
(*, 224.0.1.40), 00:29:33/stopped, RP 0.0.0.0, flags: DCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0.25, Forward/Sparse, 00:29:33/00:00:00
FastEthernet0/0, Forward/Sparse, 00:29:33/00:00:00
(5.5.5.5, 224.0.1.40), 00:29:24/00:02:52, flags: LT
Incoming interface: Serial0/0.25, RPF nbr 5.5.245.5
Outgoing interface list:
FastEthernet0/0, Forward/Sparse, 00:29:24/00:00:00
R2#sh ip pim rp
Group: 224.2.2.2, RP: 5.5.5.5, v2, v1, uptime 00:02:47, expires 00:02:10
R2#
R2#sh ip pim nei
PIM Neighbor Table
Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
S - State Refresh Capable
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
5.5.245.5 Serial0/0.25 02:32:45/00:01:33 v2 1 / DR S
R2#
SEE the ping timing out on R2
R2#sh ip pim rp
Group: 224.2.2.2, RP: 5.5.5.5 , v2, v1, uptime 00:02:47, expires 00:02:10
R2#ping 224.2.2.2 re 5
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 224.2.2.2, timeout is 2 seconds:
Reply to request 0 from 5.5.245.4, 136 ms
Reply to request 0 from 5.5.245.4, 208 ms
Reply to request 0 from 5.5.245.4 , 176 ms
Reply to request 1 from 5.5.245.4, 141 ms
Reply to request 1 from 5.5.245.4, 157 ms...
If u need any more outputs please let me know.
Thanks to all
Regards
BB
12-30-2007 10:28 AM
Please post full configs from the 3 routers. I need to know the underlying dynamic routing protocol and if you can, post a network topology.
You may be experiencing RPFs, where R2 may have a better route to Fastethernet on R4 via the LAN where multicast isn't running instead of the WAN.
Check the unicast route for R4's Fa0 on R2's routing table.
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: