From: Sandro Ciffali (sandyccie@xxxxxxxxx)
Date: Fri Feb 22 2002 - 17:17:57 GMT-3
It depends on the TTL configured for the send-rp-disco
router.
You can live with one router with large enough ttl in
the discovery, However the location of your router
will decide you can work with sparse mode only or you
need sparse-dense mode.
Sandro
--- tang bing <tang_bing@yahoo.com> wrote:
> Hi, group :
> For multicasting sparse-mode.
> sparse mode auto-rp ,
> configure send-rp-annouce on the rp router ,
> do I need send-rp-discovery on all the other router
> ?
> or just one router is enough ?
>
> I put ip igmp join on one of the router ,
> ping that igmp group , sometime can ping , sometime
> cannot ? why ?
>
>
(annouce/discovery)r1------r2-------r3(224.224.224.1)
>
> mtrace result :
>
> r5#mtrace 205.205.205.5 117.1.1.1
> Type escape sequence to abort.
> Mtrace from 205.205.205.5 to 117.1.1.1 via RPF
> From source (?) to destination (?)
> Querying full reverse path...
> 0 117.1.1.1
> -1 195.5.5.2 PIM thresh^ 0 -10770 ms
> [205.205.205.5/32]
> -2 195.5.5.1 PIM thresh^ 0 3 ms
> [205.205.205.5/32]
> -3 132.2.4.1 PIM thresh^ 0 4 ms
> [205.205.205.0/24]
> -4 205.205.205.5
> r5#
> r5#
> r5#mtrace 205.205.205.5 117.1.1.1 224.224.224.1
> Type escape sequence to abort.
> Mtrace from 205.205.205.5 to 117.1.1.1 via group
> 224.224.224.1
> From source (?) to destination (?)
> Querying full reverse path... * switching to
> hop-by-hop:
> 0 117.1.1.1
> -1 * 195.5.5.2 PIM thresh^ 0 -10768 ms
> [205.205.205.5/32]
> -2 * 195.5.5.1 PIM thresh^ 0 2 ms
> [205.205.205.5/32]
> -3 * 132.2.4.1 PIM thresh^ 0 4 ms Reached
> RP/Core
> [205.205.205.0/24]
> -4 * Route must have changed...try again
>
> r5#
>
>
>
This archive was generated by hypermail 2.1.4 : Thu Jun 20 2002 - 13:46:31 GMT-3