Re: Multicast issue in NBMA

From: Taio Bone <taiobtnh_at_gmail.com>
Date: Thu, 4 Jul 2013 20:51:44 +0100

Also ALL routers are 7200 series

R2(config)#do sh ver
Cisco IOS Software, 7200 Software (C7200-IK9O3S-M), Version 12.4(12c),
RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2007 by Cisco Systems, Inc.
Compiled Fri 13-Jul-07 09:55 by prod_rel_team

On Thu, Jul 4, 2013 at 8:49 PM, Taio Bone <taiobtnh_at_gmail.com> wrote:

> R1
>
> FRS
>
> R2 R3
> f0/0 f0/0
> | |
> | |
> f0/0 f0/0
> R4 R5
> *
> *
> **R3 is the RP and are statically configure on ALL routers including the
> RP itself*
>
> **Igmp join is being sent from R4's f0/0 interface....R2 receives the
> join message and has the (*,G) entry for the group*
>
> R2(config)#
> PIM(0): Check RP 3.3.3.3 into the (*, 224.6.6.6) entry
> PIM(0): Received v2 Join/Prune on FastEthernet0/0 from 24.24.24.4, to us
> PIM(0): Join-list: (*, 224.6.6.6), RPT-bit set, WC-bit set, S-bit set
> PIM(0): Add FastEthernet0/0/24.24.24.4 to (*, 224.6.6.6), Forward state,
> by PIM *G Join
> PIM(0): Building Triggered (*,G) Join / (S,G,RP-bit) Prune message for
> 224.6.6.6
> R2(config)#
>
> R2(config)#do sh ip mroute 224.6.6.6
> 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
>
> (*, 224.6.6.6), 00:01:11/00:03:16, RP 3.3.3.3, flags: SJC
> Incoming interface: Serial1/0, RPF nbr 10.10.10.3
> Outgoing interface list:
> FastEthernet0/0, Forward/Sparse, 00:01:11/00:03:16
>
>
> *
> *
> **the multicast source is being sent from R5's f0/0 interface,hence the
> DR is R3 which happens to be the RP as well as evident by the below output
> *
>
>
> R3(config)#do sh log
> Syslog logging: enabled (12 messages dropped, 1 messages rate-limited,
> 0 flushes, 0 overruns, xml disabled, filtering disabled)
> Console logging: level alerts, 150 messages logged, xml disabled,
> filtering disabled
> Monitor logging: level debugging, 0 messages logged, xml disabled,
> filtering disabled
> Buffer logging: level debugging, 165 messages logged, xml disabled,
> filtering disabled
> Logging Exception size (8192 bytes)
> Count and timestamp logging messages: disabled
>
> No active filter modules.
>
> Trap logging: level informational, 62 message lines logged
>
> Log Buffer (8192 bytes):
>
> PIM(0): Received v2 Join/Prune on FastEthernet0/0 from 35.35.35.5, to us
> PIM(0): Join-list: (*, 224.0.1.40), RPT-bit set, WC-bit set, S-bit set
> PIM(0): Update FastEthernet0/0/35.35.35.5 to (*, 224.0.1.40), Forward
> state, by PIM *G Join
> PIM(0): v1, bad checksum from 35.35.35.5 (FastEthernet0/0)
> PIM(0): Check RP 3.3.3.3 into the (*, 224.2.2.2) entry
> PIM(0): Received v2 Register on FastEthernet0/0 from 35.35.35.5
> for 35.35.35.5, group 224.2.2.2
> PIM(0): Send v2 Register-Stop to 35.35.35.5 for 35.35.35.5, group 224.2.2.2
> PIM(0): Received v2 Register on FastEthernet0/0 from 35.35.35.5
> for 5.5.5.5, group 224.2.2.2
> PIM(0): Send v2 Register-Stop to 35.35.35.5 for 5.5.5.5, group 224.2.2.2
> PIM(0): v1, bad checksum from 35.35.35.5 (FastEthernet0/0)
> PIM(0): Building Periodic (*,G) Join / (S,G,RP-bit) Prune message for
> 224.0.1.40
> PIM(0): Building Periodic (*,G) Join / (S,G,RP-bit) Prune message for
> 224.1.1.1
> PIM(0): Received v2 Join/Prune on FastEthernet0/0 from 35.35.35.5, to us
> PIM(0): Join-list: (*, 224.0.1.40), RPT-bit set, WC-bit set, S-bit set
> PIM(0): Update FastEthernet0/0/35.35.35.5 to (*, 224.0.1.40), Forward
> state, by PIM *G Join
> PIM(0): Send RP-reachability for 224.0.1.40 on FastEthernet0/0
> PIM(0): Send RP-reachability for 224.0.1.40 on Serial1/0
> PIM(0): Building Periodic (*,G) Join / (S,G,RP-bit) Prune message for
> 224.2.2.2
> PIM(0): Received v2 Register on FastEthernet0/0 from 35.35.35.5
> PIM(0): Send v2 Register-Stop to 35.35.35.5 for 0.0.0.0, group 0.0.0.0
>
>
>
> **R1 is neither receiving the join message nor does it have an entry for
> the (*,G)*
>
> R1(config-if)#do sh ip mroute 224.6.6.6
> Group 224.6.6.6 not found
>
>
> *MORE OUTPUT*
>
> R2(config)#do sh frame map
> Serial1/0 (up): ip 10.10.10.1 dlci 201(0xC9,0x3090), static,
> broadcast,
> CISCO, status defined, active
> Serial1/0 (up): ip 10.10.10.2 dlci 201(0xC9,0x3090), static,
> CISCO, status defined, active
> Serial1/0 (up): ip 10.10.10.3 dlci 201(0xC9,0x3090), static,
> CISCO, status defined, active
>
>
> R3(config)#do sh frame map
> Serial1/0 (up): ip 10.10.10.1 dlci 301(0x12D,0x48D0), static,
> broadcast,
> CISCO, status defined, active
> Serial1/0 (up): ip 10.10.10.2 dlci 301(0x12D,0x48D0), static,
> CISCO, status defined, active
>
>
> R2(config)#do sh ip route
> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2
> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS
> level-2
> ia - IS-IS inter area, * - candidate default, U - per-user static
> route
> o - ODR, P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> 1.0.0.0/32 is subnetted, 1 subnets
> O 1.1.1.1 [110/65] via 10.10.10.1, 00:37:27, Serial1/0
> 35.0.0.0/24 is subnetted, 1 subnets
> O 35.35.35.0 [110/65] via 10.10.10.3, 00:37:27, Serial1/0
> 2.0.0.0/32 is subnetted, 1 subnets
> C 2.2.2.2 is directly connected, Loopback1
> 3.0.0.0/32 is subnetted, 1 subnets
> O 3.3.3.3 [110/65] via 10.10.10.3, 00:37:27, Serial1/0
> 4.0.0.0/32 is subnetted, 1 subnets
> O 4.4.4.4 [110/2] via 24.24.24.4, 00:37:27, FastEthernet0/0
> 5.0.0.0/32 is subnetted, 1 subnets
> O 5.5.5.5 [110/66] via 10.10.10.3, 00:37:27, Serial1/0
> 24.0.0.0/24 is subnetted, 1 subnets
> C 24.24.24.0 is directly connected, FastEthernet0/0
> 10.0.0.0/24 is subnetted, 1 subnets
> C 10.10.10.0 is directly connected, Serial1/0
>
>
>
>
>
>
> R3(config)#do sh ip route
> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2
> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS
> level-2
> ia - IS-IS inter area, * - candidate default, U - per-user static
> route
> o - ODR, P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> 1.0.0.0/32 is subnetted, 1 subnets
> O 1.1.1.1 [110/65] via 10.10.10.1, 00:36:54, Serial1/0
> 35.0.0.0/24 is subnetted, 1 subnets
> C 35.35.35.0 is directly connected, FastEthernet0/0
> 2.0.0.0/32 is subnetted, 1 subnets
> O 2.2.2.2 [110/65] via 10.10.10.2, 00:36:54, Serial1/0
> 3.0.0.0/32 is subnetted, 1 subnets
> C 3.3.3.3 is directly connected, Loopback1
> 4.0.0.0/32 is subnetted, 1 subnets
> O 4.4.4.4 [110/66] via 10.10.10.2, 00:36:54, Serial1/0
> 5.0.0.0/32 is subnetted, 1 subnets
> O 5.5.5.5 [110/2] via 35.35.35.5, 00:36:54, FastEthernet0/0
> 24.0.0.0/24 is subnetted, 1 subnets
> O 24.24.24.0 [110/65] via 10.10.10.2, 00:36:54, Serial1/0
> 10.0.0.0/24 is subnetted, 1 subnets
> C 10.10.10.0 is directly connected, Serial1/0
>
>
>
>
>

-- 
Warm wishes,
Ty.
Blogs and organic groups at http://www.ccie.net
Received on Thu Jul 04 2013 - 20:51:44 ART

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