From: Roger Schotsal (schotsal@xxxxxxxxxxx)
Date: Mon Apr 15 2002 - 04:05:17 GMT-3
If you move the 'ip igmp join-group 230.0.0.1' statement to the S0/0
interface you will see the (*,G) entry in the mroute table. I'm no
multicast expert - but I think it has to do with the interface you place the
advertisment on - the join is only advertise out the interface you place it
on. Seems like a static join is a igmp join request from the router to the
SPT - just like a client join. An administraitor would use this to reduce
the time a client takes to join a group by pre-positiong the local router to
have joined the tree. But I'm getting beyond what I really know now.
Thanx,
Roger
>From: "hSzeto Jeff" <jytszeto@hotmail.com>
>Reply-To: "hSzeto Jeff" <jytszeto@hotmail.com>
>To: ccielab@groupstudy.com
>Subject: Multicast Question, please help!
>Date: Sat, 13 Apr 2002 13:13:06 +0800
>
>Hi,
>
>--f0/1--R1--s0/0--------FR-------s0-R2
>
>The serial interfaces are main interfaces
>Sparse-dense-mode is used in all interfaces
>R1 is the auto-RP and agent
>R1's f0/0 has join the group 230.0.0.1
>The problem is R2 cannot ping the group 230.0.0.1
>
>Hers's are the relevant config, please tell me what I am doing wrong.
>
>R1
>
>ip multicast-routing
>
>int s0/0
>ip pim nbma-mode
>ip pim sparse-dense-mode
>
>int f0/1
>ip igmp join-group 230.0.0.1
>ip pim sparse-dense-mode
>
>ip pim send-rp-announce Loopback0 scope 15 group-list 80
>ip pim send-rp-discovery scope 15
>
>access-list 80 permit 230.0.0.1
>
>R2
>
>ip multicast-routing
>
>int s0
>ip pim nbma-mode
>ip pim sparse-dense-mode
>
>When I show the mroute table of R1, I saw this:
>
>(*, 230.0.0.1), 00:00:06/00:00:00, RP 140.100.1.1, flags: SJCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> FastEthernet0/1, Forward/Sparse-Dense, 00:00:06/00:02:53
>
>It seems the outgoing interface does not include s0/0.
>
>Thank you in advance.
>
>Jeff
>
>
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:58:08 GMT-3