From: Paul Chen (cpjchen@starhub.net.sg)
Date: Fri Aug 01 2003 - 06:52:34 GMT-3
Hi Everyone,
Any help appreciated on this:-
I have a multicast problem:
R2 -----------R4 is a RP (150.50.4.4) with a multicast source 150.50.40.8
|
|
Frame Cloud ------ R6
||
R5
R2 ,R4 - 12.2.15(T)
R5, R6 - 12.2 1 LD
------------------------------------------------------------------------
R4 Config : R4 forwards the multicast packets to R2 but R2 does not
forward them to R5 and R6 inspite of configuring 'ip pim nbma-mode' on R2 ?
Debugging messages at the end .
r4#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
(*, 224.0.1.40), 03:16:04/00:02:57, RP 150.50.4.4, flags: SJCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0, 150.50.100.2, Forward/Sparse, 02:30:03/00:02:57
FastEthernet0/0, Forward/Sparse-Dense, 03:15:23/00:02:55
(*, 224.100.100.100), 02:30:03/stopped, RP 150.50.4.4, flags: SJCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0, 150.50.100.2, Forward/Sparse, 00:04:55/00:03:29
FastEthernet0/0, Forward/Sparse-Dense, 00:08:10/00:02:47
(150.50.40.8, 224.100.100.100), 02:12:58/00:03:29, flags: LT
Incoming interface: FastEthernet0/0, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/0, 150.50.100.2, Forward/Sparse, 00:04:56/00:03:28
--------------------------------------------------------------------------------------------
R2 Config:
interface FastEthernet0/0
ip address 150.50.10.2 255.255.255.0
ip igmp join-group 224.100.100.100
ip pim sparse-dense mode
interface Serial1/0
ip address 150.50.100.2 255.255.255.0
ip pim nbma-mode
ip pim sparse-mode
encapsulation frame-relay
ip ospf network broadcast
ip ospf priority 255
no fair-queue
frame-relay map ip 150.50.100.4 104 broadcast
frame-relay map ip 150.50.100.5 105 broadcast
frame-relay map ip 150.50.100.6 106 broadcast
frame-relay lmi-type ansi
ip pim rp-address 150.50.4.4
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
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
(*, 224.0.1.40), 00:34:57/00:02:51, RP 150.50.4.4, flags: SJCL
Incoming interface: Serial1/0, RPF nbr 150.50.100.4
Outgoing interface list:
FastEthernet0/0, Forward/Sparse-Dense, 00:02:06/00:02:39
(*, 224.100.100.100), 00:02:01/stopped, RP 150.50.4.4, flags: SJCL
Incoming interface: Serial1/0, RPF nbr 150.50.100.4
Outgoing interface list:
FastEthernet0/0, Forward/Sparse-Dense, 00:02:01/00:02:36
(150.50.40.8, 224.100.100.100), 00:02:02/00:02:59, flags: LJT
Incoming interface: Serial1/0, RPF nbr 150.50.100.4
Outgoing interface list:
FastEthernet0/0, Forward/Sparse-Dense, 00:02:02/00:02:35
r2#sh ip mroute count
IP Multicast Statistics
3 routes using 1562 bytes of memory
2 groups, 0.50 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per
second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group: 224.0.1.40, Source count: 0, Packets forwarded: 0, Packets
received: 0
Group: 224.100.100.100, Source count: 1, Packets forwarded: 142, Packets
receive
d: 142
RP-tree: Forwarding: 0/0/0/0, Other: 0/0/0
Source: 150.50.40.8/32, Forwarding: 142/1/212/1, Other: 142/0/0
As you can see R2 is receiving multicast packets from R4 and forwarding them
I configured ' ip pim nbma-mode' but. I am not sure why it does not
forward it to R5 and R6
R5 config----------------------------------------------
interface Ethernet0
ip address 150.50.50.5 255.255.255.0
ip router isis
ip pim sparse-dense-mode
ip igmp join-group 224.100.100.100
!
interface Serial0
ip address 150.50.100.5 255.255.255.0
ip pim nbma-mode
ip pim sparse-mode
encapsulation frame-relay
ip ospf network broadcast
ip ospf cost 64
ip ospf priority 0
no fair-queue
frame-relay map ip 150.50.100.2 501 broadcast
frame-relay map ip 150.50.100.4 501 broadcast
frame-relay map ip 150.50.100.6 501 broadcast
no frame-relay inverse-arp
R5 sh ip mroute
(*, 239.255.255.250), 01:15:31/00:02:31, RP 150.50.4.4, flags: S
Incoming interface: Serial0, RPF nbr 150.50.100.4
Outgoing interface list:
Ethernet0, Forward/Sparse-Dense, 00:57:14/00:02:31
(*, 224.100.100.100), 01:18:26/00:00:00, RP 150.50.4.4, flags: SJCL
Incoming interface: Serial0, RPF nbr 150.50.100.4
Outgoing interface list:
Ethernet0, Forward/Sparse-Dense, 00:57:51/00:03:27
(*, 224.0.1.40), 03:25:57/00:00:00, RP 150.50.4.4, flags: SJCL
Incoming interface: Serial0, RPF nbr 150.50.100.4
Outgoing interface list:
Serial0, 150.50.100.2, Forward/Sparse, 00:04:34/00:02:36
Ethernet0, Forward/Sparse-Dense, 00:58:09/00:02:35
--------------------------------NO Packets received ?
----------------------------------
r5#sh ip mroute count
IP Multicast Statistics
3 routes using 1570 bytes of memory
3 groups, 0.00 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per
second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group: 239.255.255.250, Source count: 0, Packets forwarded: 0, Packets
received:
0
Group: 224.100.100.100, Source count: 0, Packets forwarded: 0, Packets
received:
0
Group: 224.0.1.40, Source count: 0, Packets forwarded: 0, Packets
received: 0
r5#
PIM debugging is on
r5#
03:30:12: IGMP: Send v2 Report for 224.100.100.100 on Ethernet0
03:30:12: IGMP: Received v2 Report on Ethernet0 from 150.50.50.5 for
224.100.100
.100
.100
.50.50.5 for 0 sources
03:30:12: IGMP: Updating EXCLUDE group timer for 224.100.100.100
03:30:14: PIM: Received v2 Join/Prune on Ethernet0 from 150.50.50.51,
not to us
03:30:14: PIM: Join-list: (*, 224.0.1.40) RP 150.50.4.4, RPT-bit set,
WC-bit set
, S-bit set
03:30:14: PIM: Received v2 Hello on Serial0 from 150.50.100.2
03:30:14: PIM: Hello packet has unknown option 20, ignored
<----------------------
Anyone knows what this option 20 is ? I can't find this in CCO
Thanks,
Paul
This archive was generated by hypermail 2.1.4 : Tue Sep 02 2003 - 18:53:51 GMT-3