From: ccie candidate (ccie1@xxxxxxxxx)
Date: Thu Aug 15 2002 - 01:46:08 GMT-3
hi ;
when i was doing multicast over frame realy i guess i had the same problems.
try to put the command ip pim nbma-mode on the interfaces that uses sparse-mode
in frame relay network ..i can recall that this command solved the problem (no
t sure ) .
do it and let me know .
--On Wed, 14 Aug 2002 19:33:23 Joe Higgins wrote: >I need some help on a multicasting problem: >I have three routers in the following configuration: > >rtrA ser1 <--- > ser1 rtrb ser0 <--> ser0 rtrC >All indicated physical interfaces are running frame relay >rtr C has a 224.0.6.6 igmp join on loop 0 >all routers have sparse mode on the intefaces and point to rtr C as the >RP >I cannot ping 224.0.6.6 from rtr A but I can ping it from rtr B >Rtr B sees rtr A as the source of the multicast but it does not have >seria;l 0 as an outgoing interface. > >In summary it appears that I cannot route multicast on router B through >its two physical frame relay interfaces. > >The following is the relavent configs and show commands after I cleared >all mroutes and only tried pings from rtr A. Any help would be >appreciated. > >A#sh ip pim rp >Group: 224.0.1.40, RP: 1.9.12.2, v1, uptime 00:45:48, expires 00:04:17 > >interface Serial1 > ip address 1.9.14.4 255.255.255.0 > ip pim sparse-mode > encapsulation frame-relay > ip ospf network point-to-multipoint > clockrate 64000 > frame-relay map ip 1.9.14.1 200 broadcast >A#p 224.0.6.6 > >Type escape sequence to abort. >Sending 1, 100-byte ICMP Echos to 224.0.6.6, timeout is 2 seconds: >. >A#p 224.0.6.6 > >Type escape sequence to abort. >Sending 1, 100-byte ICMP Echos to 224.0.6.6, timeout is 2 seconds: >. >--------------------------------------- >router B > >B#sh ip pim rp >Group: 224.0.1.40, RP: 1.9.12.2, v1, uptime 00:50:28, expires 00:04:13 >Group: 224.0.6.6, RP: 1.9.12.2, v2, uptime 00:06:36, expires never > >interface Serial0 > ip address 1.9.12.1 255.255.255.0 > ip pim sparse-mode > encapsulation frame-relay > ip ospf network point-to-multipoint > no ip mroute-cache > ipx network 12 > frame-relay map ip 1.9.12.2 108 broadcast > no frame-relay inverse-arp >! >interface Serial1 > ip address 1.9.14.1 255.255.255.0 > ip pim sparse-mode > encapsulation frame-relay > ip ospf network point-to-multipoint > no ip mroute-cache > ipx network 14 > clockrate 64000 > frame-relay map ip 1.9.14.4 100 broadcast > frame-relay interface-dlci 100 > no frame-relay inverse-arp > >B#sh ip mroute >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 > M - MSDP created entry, X - Proxy Join Timer Running > A - Candidate for MSDP Advertisement >Outgoing interface flags: H - Hardware switched >Timers: Uptime/Expires >Interface state: Interface, Next-Hop or VCD, State/Mode > >(*, 224.0.1.40), 00:00:27/00:00:00, RP 1.9.12.2, flags: SJCL > Incoming interface: Serial0, RPF nbr 1.9.12.2 > Outgoing interface list: > Loopback0, Forward/Sparse-Dense, 00:00:27/00:02:32 > Serial1, Forward/Sparse, 00:00:07/00:03:22 > >(*, 224.0.6.6), 00:00:17/00:02:59, RP 1.9.12.2, flags: SP > Incoming interface: Serial0, RPF nbr 1.9.12.2 > Outgoing interface list: Null > >(1.9.14.4, 224.0.6.6), 00:00:17/00:02:42, flags: PT > Incoming interface: Serial1, RPF nbr 1.9.14.4 > Outgoing interface list: Null > >B# > > > >------------------------------------------------------------------------ > >C#sh ip pim rp >Group: 224.0.1.40, RP: 1.9.12.2, v1, next RP-reachable in 00:01:27 >Group: 224.0.6.6, RP: 1.9.12.2, next RP-reachable in 00:01:27 > > >interface Loopback0 > ip address 139.9.2.2 255.255.255.0 > ip pim sparse > ip ospf network point-to-point > ip igmp join-group 224.0.6.6 > >interface Serial0 > ip address 1.9.12.2 255.255.255.0 > ip pim sparse-mode > encapsulation frame-relay > ip ospf network point-to-multipoint > frame-relay map ip 1.9.12.1 801 broadcast > frame-relay map ip 139.9.12.1 801 broadcast > no frame-relay inverse-arp > >C#sh ip mroute >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 > M - MSDP created entry, X - Proxy Join Timer Running > A - Candidate for MSDP Advertisement >Outgoing interface flags: H - Hardware switched >Timers: Uptime/Expires >Interface state: Interface, Next-Hop or VCD, State/Mode > >(*, 224.0.1.40), 00:11:40/00:00:00, RP 1.9.12.2, flags: SJCL > Incoming interface: Null, RPF nbr 0.0.0.0 > Outgoing interface list: > Serial0, Forward/Sparse, 00:10:46/00:03:01 > Loopback0, Forward/Sparse, 00:11:40/00:02:14 > >(*, 224.0.6.6), 00:11:40/00:00:00, RP 1.9.12.2, flags: SJCL > Incoming interface: Null, RPF nbr 0.0.0.0 > Outgoing interface list: > Loopback0, Forward/Sparse, 00:11:40/00:02:18 > >C#
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