From: Padhu (LFG) (padhu@xxxxxxxxxxxx)
Date: Wed Aug 08 2001 - 15:34:16 GMT-3
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 23:33:52.944 UTC: MRT: Create (*, 224.5.5.5), RPF Null, PC 0x3309CD0
*Mar 6 23:33:52.948 UTC: MRT: Create (170.100.1.1/32, 224.5.5.5), RPF
Ethernet0
/0.0.0.0, PC 0x3309DCA
*Mar 6 23:33:52.952 UTC: IP: s=170.100.1.1 (Ethernet0) d=224.5.5.5 len 114,
mro
ute olist null
*Mar 6 23:33:52.956 UTC: IP: s=172.16.3.3 (Loopback0) d=224.5.5.5 len 100,
mrout
ing interface disabled.
R3#
*Mar 6 23:34:23.004 UTC: IP: s=172.16.1.1 (Tunnel35) d=224.0.1.40 len 48,
mroute
olist null
*Mar 6 23:34:23.100 UTC: IP: s=172.16.1.1 (Tunnel35) d=224.0.1.40 len 48,
mroute
olist null
*Mar 6 23:34:24.736 UTC: MRT: Create (172.16.5.5/32, 224.0.1.39), RPF
Tunnel35/1
38.8.60.130, PC 0x3309DCA
*Mar 6 23:34:24.740 UTC: IP: s=172.16.5.5 (Tunnel35) d=224.0.1.39 len 48,
mroute
olist null
R3#
*Mar 6 23:34:28.228 UTC: MRT: Update (*, 224.3.3.3), RPF Null, PC 0x330220C
*Mar 6 23:34:28.236 UTC: MRT: Update (*, 224.3.3.3), RPF Null, PC 0x330220C
*Mar 6 23:34:32.052 UTC: MRT: Create (172.16.30.81/32, 224.0.1.39), RPF
Tunnel35
/172.16.60.130, PC 0x3309DCA
*Mar 6 23:34:32.056 UTC: IP: s=172.16.30.81 (Tunnel35) d=224.0.1.39 len 48,
mrou
te olist null
R3#u all
All possible debugging has been turned off
R3#
R3#sh ip pim int
Address Interface Mode Nbr Query DR
Count Intvl
170.100.1.1 Ethernet0 Sparse-Dense 0 30 170.100.1.1
170.100.1.1 Tunnel35 Sparse-Dense 1 30 0.0.0.0
R3#
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), 00:01:50/00:02:59, 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), 00:01:50/00:01:09, flags: PFT
Incoming interface: Ethernet0, RPF nbr 0.0.0.0, Registering
Outgoing interface list: Null
R3#sh ip rpf 172.16.60.130
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
R3#
-----Original Message-----
From: Raj Galagali [mailto:raj@bengi.exodus.net]
Sent: Wednesday, August 08, 2001 1:29 PM
To: Padhu (LFG)
Subject: Re: Multicasting problem
Can u do debug ip mpacket on R3 and post the details. Looks like RPF is
failing on R3. Check the tunnel config or may be take a step back and
config plain sprse-dense on all int of R3 so that i can build a RPT to
your RP and see if that works.
/raj
On Wed, 8 Aug 2001, Padhu (LFG) wrote:
> 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]
>
----------------------------------------------------------------------------
> --------------------
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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