From: Padhu (LFG) (padhu@xxxxxxxxxxxx)
Date: Wed Aug 08 2001 - 14:49:22 GMT-3
I have the following topology :
igmp join groups on all ethernets.
running sparse dense all over with RP nailed at R1
Pings between R1,R4,R5,R7 work with no problems.
However R8 cannot ping R1(224.1.1.1) but can ping everything else
problem with R3 also. All routers can ping R3(224.3.3.3) but R3 cannot ping
any groups
No access-lists no multicast boundaries...wide open as an ocean
Only weird thing is that R8 and R3 are the only routers with 11.2 . Rest of
the net is 12.0
224.8.8.8 224.1.1.1 224.7.7.7
R8---------------R1-------------------R7
/ \
/ \
R4 R5----------------R3
224.4.4.4 224.5.5.5 224.3.3.3
Configs:
R3#ping 224.5.5.5
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 224.5.5.5, timeout is 2 seconds:
*Mar 6 22:35:24.428 UTC: IP: s=172.16.5.5 (Tunnel35) d=224.0.1.39 len 48,
mroute
olist null
*Mar 6 22:35:25.732 UTC: IP: s=170.100.1.1 (Ethernet0) d=224.5.5.5 len 114,
mro
ute olist null
*Mar 6 22:35:25.736 UTC: IP: s=172.16.3.3 (Loopback0) d=224.5.5.5 len 100,
mrout
ing interface disabled.
R3#
*Mar 6 22:35:31.872 UTC: IP: s=172.16.30.81 (Tunnel35) d=224.0.1.39 len 48,
mrou
te olist null
R3#sh ip mroute 224.5.5.5
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, C - Connected, L - Local, P - Pruned
R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT
Timers: Uptime/Expires
Interface state: Interface, Next-Hop, State/Mode
(*, 224.5.5.5), 00:02:53/00:02:58, RP 172.16.30.81, flags: SPF
Incoming interface: Tunnel35, RPF nbr 172.16.60.130, Mroute
Outgoing interface list: Null
(170.100.1.1/32, 224.5.5.5), 00:02:53/00:00:06, flags: PFT
Incoming interface: Ethernet0, RPF nbr 0.0.0.0, Registering
Outgoing interface list: Null
R3#
*Mar 6 22:36:38.112 UTC: IP: s=172.16.7.7 (Tunnel35) d=224.0.1.39 len 48,
mroute
olist null
R3#show ip rpf
*Mar 6 22:36:46.016 UTC: IP: s=172.16.1.1 (Tunnel35) d=224.0.1.40 len 48,
mroute
olist null
*Mar 6 22:36:46.116 UTC: IP: s=172.16.1.1 (Tunnel35) d=224.0.1.40 len 48,
mroute
olist null172.16.60.130
RPF information for ? (172.16.60.130)
RPF interface: Tunnel35
RPF neighbor: ? (172.16.60.130)
RPF route/mask: 172.16.60.130/255.255.0.0
RPF type: static mroute
ip mroute 172.16.0.0 255.255.0.0 Tunnel35
R3#mrinfo
170.100.1.1 [version cisco 11.2] [flags: PMA]:
170.100.1.1 -> 0.0.0.0 [1/0/pim/querier/leaf]
170.100.1.1 -> 172.16.60.130 [1/0/tunnel/pim/querier]
----------------------------------------------------------------------------
-------------------
R8#sh ip mroute 224.1.1.1
IP Multicast Routing Table
Flags: D - Dense, S - Sparse, C - Connected, L - Local, P - Pruned
R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT
Timers: Uptime/Expires
Interface state: Interface, Next-Hop, State/Mode
(*, 224.1.1.1), 00:14:32/00:02:22, RP 172.16.30.81, flags: SJPC
Incoming interface: Ethernet0, RPF nbr 172.16.40.161
Outgoing interface list: Null
R8#deb
R8#debug ip mpac
IP multicast packets debugging is on
R8#ping 224.1.1.1
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds:
.
R8#
*Mar 1 00:16:18.568 UTC: IP: s=172.16.40.168 (Ethernet0) d=224.1.1.1 len
114, mr
oute olist null
*Mar 1 00:16:18.572 UTC: IP: s=172.16.8.8 (Loopback0) d=224.1.1.1 len 100,
mrout
ing interface disabled
R8#
R8#mrinfo
172.16.100.8 [version cisco 11.2] [flags: PMA]:
172.16.40.168 -> 172.16.40.161 [1/0/pim/querier]
172.16.100.8 -> 0.0.0.0 [1/0/pim/leaf]
----------------------------------------------------------------------------
--------------------
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This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:31:47 GMT-3