From: Ivan (ivan@iip.net)
Date: Thu Apr 19 2007 - 05:40:37 ART
I can't find any igmp join in your config. In such config s1/0 on the R1 must
be prunned. Put ip igmp join-group 224.24.24.24 onto r2.
On Wednesday 18 April 2007 03:31, Antonio Soares wrote:
> Dear GS,
>
> Two questions about Multicast Helper-Map:
>
> Given the topology:
>
> SOURCE==F0/0==router r1===S1/0===S1/0===router r2===F0/0===RECEIVER
>
> SOURCE is sending UDP/2000 broadcast traffic.
>
> Question #1:
> -----------
> Where should i enable "ip directed-broadcast" ?
>
> Question #2:
> -----------
> How can we test if we have a working configuration ?
>
> Regarding Question #1, i think we only need to enable it on both
> FastEthernet Interfaces:
>
> +++++++++++++++++++++++++++
> r1(config)#int f0/0
> r1(config-if)#ip multicast helper-map broadcast 224.24.24.24 udp-2000
> r1(config-if)#ip pim dense-mode
> r1(config-if)#ip directed-broadcast
>
> r1(config)#int s1/0
> r1(config-if)#ip pim dense-mode
>
> r1(config)#ip access-list extended udp-2000
> r1(config-ext-nacl)#permit udp any any eq 2000
>
> r1(config)#ip forward-protocol udp 2000
> +++++++++++++++++++++++++++
> r2(config)#int s1/0
> r2(config-if)#ip multicast helper-map 224.24.24.24 10.10.10.255 120
> r2(config-if)#ip pim dense-mode
>
> r2(config)#int f0/0
> r2(config-if)#ip pim dense-mode
> r2(config-if)#ip directed-broadcast
>
> r2(config)#ip access-list extended udp-2000
> r2(config-ext-nacl)#permit udp any any eq 2000
>
> r2(config)#ip forward-protocol udp 2000
> +++++++++++++++++++++++++++
>
> Regarding Question #2, i tried to use IP SLA but i get a weird behaviour.
> The udp destination port is always 1967:
>
> !
> ip sla monitor 1
> type udpEcho dest-ipaddr 10.10.10.255 dest-port 2000 source-port 9999
> timeout 2
> frequency 1
> ip sla monitor schedule 1 life forever start-time now
> !
>
> Debug ip packet detail:
>
> *Apr 22 21:21:20.739: IP: tableid=0, s=6.6.6.6 (local), d=10.10.10.255
> (FastEthernet0/0), routed via RIB
> *Apr 22 21:21:20.739: IP: s=6.6.6.6 (local), d=10.10.10.255
> (FastEthernet0/0), len 80, sending
> *Apr 22 21:21:20.739: UDP src=9999, dst=1967
>
> Now with destination port=3000 and source port=8888:
>
> ip sla monitor 1
> type udpEcho dest-ipaddr 10.10.10.255 dest-port 3000 source-port 8888
> timeout 2
> frequency 1
> ip sla monitor schedule 1 life forever start-time now
> !
>
> Debug ip packet detail:
>
> *Apr 22 21:23:47.883: IP: tableid=0, s=6.6.6.6 (local), d=10.10.10.255
> (FastEthernet0/0), routed via RIB
> *Apr 22 21:23:47.883: IP: s=6.6.6.6 (local), d=10.10.10.255
> (FastEthernet0/0), len 80, sending
> *Apr 22 21:23:47.883: UDP src=8888, dst=1967
>
> The source port is correctly changed but the destination port is always
> 1967...
>
>
> Thanks.
> Antonio
>
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This archive was generated by hypermail 2.1.4 : Tue May 01 2007 - 08:28:36 ART