From: Joseph Brunner (joe@affirmedsystems.com)
Date: Sun Mar 30 2008 - 02:30:08 ART
Uh, a unicast route for 10.1.1.2 on SW2?
Or a static mroute check... do a debug ip mpacket detail
On sw2...
Tell me if you see rpf issues...
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
vignesh sethuraman
Sent: Saturday, March 29, 2008 11:06 PM
To: ccielab@groupstudy.com
Subject: unable to Ping Mutlicast address 224.5.5.5
Hello Experts,
I have a question in Multicast. I am not able to ping the multicast
address 224.5.5.5 from Sw1. Sw2 joined 224.5.5. Could you please anyone
what i am missing here.
Here is the scenario
sw1(gig 2/0/1) <-------->(fa0/0) R1 (s1/0.2)<------->(s 0/1.1) R2
(fa0/0)<------>(fa 1/0/2) SW2
Here are my configs
R1#Sh run
Building configuration...
Current configuration : 1492 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
interface Loopback0
ip address 10.10.10.10 255.255.255.0
ip pim sparse-mode
!
interface FastEthernet0/0
ip address 10.1.1.1 255.255.255.0
ip pim sparse-mode
duplex auto
speed auto
!
nterface Serial1/0
no ip address
encapsulation frame-relay
no frame-relay inverse-arp
!
interface Serial1/0.2 point-to-point
ip address 131.1.12.1 255.255.255.0
ip pim sparse-mode
!
ip pim rp-address 10.10.10.10
R1#sh ip pim neighbor
PIM Neighbor Table
Neighbor Interface Uptime/Expires Ver DR
Address Prio/Mode
131.1.12.2 Serial1/0.2 12:03:09/00:01:35 v2 1 / S
R1#sh ip pim interface
Address Interface Ver/ Nbr Query DR DR
Mode Count Intvl
Prior
131.1.12.1 Serial1/0.2 v2/S 1 30 1
0.0.0.0
10.1.1.1 FastEthernet0/0 v2/S 0 30 1 10.1.1.1
10.10.10.10 Loopback0 v2/S 0 30 1
10.10.10.10
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
Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 224.5.5.5), 00:00:08/stopped, RP 10.10.10.10, flags: SP
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list: Null
(10.1.1.2, 224.5.5.5), 00:00:08/00:02:51, flags: PT
Incoming interface: FastEthernet0/0, RPF nbr 0.0.0.0
Outgoing interface list: Null
(*, 224.0.1.40), 12:04:48/00:02:31, RP 10.10.10.10, flags: SJCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial1/0.2, Forward/Sparse, 12:04:49/00:03:28
R1#sh ip pim rp
Group: 224.5.5.5, RP: 10.10.10.10, next RP-reachable in 00:00:09
Group: 224.0.1.40, RP: 10.10.10.10, next RP-reachable in 00:00:14
-----------------------------------
R2;
R2#Sh run
interface Loopback0
ip address 20.20.20.20 255.255.255.0
!
interface FastEthernet0/0
ip address 20.2.2.2 255.255.255.0
ip pim sparse-mode
duplex auto
speed auto
!
interface Serial0/1
no ip address
encapsulation frame-relay
no dce-terminal-timing-enable
!
interface Serial0/1.1 point-to-point
ip address 131.1.12.2 255.255.255.0
ip pim sparse-mode
frame-relay interface-dlci 201
!
ip pim rp-address 10.10.10.10
!
R2#sh ip pim neighbor
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
131.1.12.1 Serial0/1.1 12:10:19/00:01:22 v2 1 / S
R2#sh ip pim interface
Address Interface Ver/ Nbr Query DR
DR
Mode Count Intvl
Prior
20.2.2.2 FastEthernet0/0 v2/S 0 30 2000
20.2.2.2
131.1.12.2 Serial0/1.1 v2/S 1 30 1
0.0.0.0
R2#sh ip pim rp
Group: 224.0.1.40, RP: 10.10.10.10, uptime 00:02:56, expires never
R2#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
(*, 224.0.1.40), 00:08:21/stopped, RP 10.10.10.10, flags: SJPCL
Incoming interface: Serial0/1.1, RPF nbr 131.1.12.1
Outgoing interface list: Null
----------------------------------------------
SW1#sh run int giga 2/0/1
Building configuration...
Current configuration : 108 bytes
!
interface GigabitEthernet2/0/1
no switchport
ip address 10.1.1.2 255.255.255.0
no ip mroute-cache
end
------------------------------------------------
SW2#sh run int fa 1/0/2
Building configuration...
Current configuration : 135 bytes
!
interface FastEthernet1/0/2
no switchport
ip address 20.2.2.3 255.255.255.0
ip igmp join-group 224.5.5.5
no ip mroute-cache
end
SW1#p 224.5.5.5
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 224.5.5.5, timeout is 2 seconds:
....
SW1#
Thanks,
Vignesh
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