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IP Multicast - Ip Pim autorp listner

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

1 REPLY
Hall of Fame Super Bronze

Re: IP Multicast - Ip Pim autorp listner

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.

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