From: MMoniz (ccie2002@tampabay.rr.com)
Date: Fri May 07 2004 - 19:55:28 GMT-3
Bob has a very good explanation on this. But to verify I think the easiest
way is to
do debug ip pim
R5#debug ip pim ......this is the RP and MP
PIM debugging is on
R5#
*Mar 1 05:56:32: PIM(0): Received v2 Join/Prune on Serial0/0.2 from
133.5.52.2, to us
*Mar 1 05:56:32: PIM(0): Join-list: (*, 224.0.1.40), RPT-bit set, WC-bit
set, S-bit set
*Mar 1 05:56:32: PIM(0): Add Serial0/0.2/133.5.52.2 to (133.5.5.5/32,
224.0.1.40)
*Mar 1 05:56:32: PIM(0): Join-list: (133.5.5.5/32, 224.0.1.40), S-bit set
*Mar 1 05:56:38: PIM(0): Building Periodic Join/Prune message for
224.64.64.10
*Mar 1 05:56:55: PIM(0): Building Periodic Join/Prune message for
224.0.1.40
*Mar 1 05:56:59: PIM(0): Building Periodic Join/Prune message for
224.0.1.39debug ip pim hell
*Mar 1 05:57:17: PIM(0): Received v2 Join/Prune on Serial0/0.1 from
133.5.235.3, to us
*Mar 1 05:57:17: PIM(0): Join-list: (*, 224.0.1.40), RPT-bit set, WC-bit
set, S-bit set
*Mar 1 05:57:17: PIM(0): Join-list: (133.5.5.5/32, 224.0.1.40), S-bit set
*Mar 1 05:57:19: PIM(0): Received v2 Join/Prune on Serial1/0 from
133.5.56.6, to us
*Mar 1 05:57:19: PIM(0): Prune-list: (133.5.5.5/32, 224.0.1.39)
*Mar 1 05:57:19: PIM(0): Received v2 Join/Prune on Serial0/0.2 from
133.5.52.2, to us
*Mar 1 05:57:19: PIM(0): Join-list: (*, 224.0.1.39), RPT-bit set, WC-bit
set, S-bit set
*Mar 1 05:57:19: PIM(0): Add Serial0/0.2/133.5.52.2 to (133.5.5.5/32,
224.0.1.39)
*Mar 1 05:57:32: PIM(0): Received v2 Join/Prune on Serial0/0.2 from
133.5.52.2, to us
*Mar 1 05:57:32: PIM(0): Join-list: (*, 224.0.1.40), RPT-bit set, WC-bit
set, S-bit set
*Mar 1 05:57:32: PIM(0): Add Serial0/0.2/133.5.52.2 to (133.5.5.5/32,
224.0.1.40)
*Mar 1 05:57:32: PIM(0): Join-list: (133.5.5.5/32, 224.0.1.40), S-bit set
*Mar 1 05:57:37: PIM(0): Send RP-reachability for 224.0.1.40 on Serial0/0.1
*Mar 1 05:57:37: PIM(0): Send RP-reachability for 224.0.1.40 on Serial0/0.2
*Mar 1 05:57:37: PIM(0): Send RP-reachability for 224.0.1.40 on Serial0/0.1
*Mar 1 05:57:37: PIM(0): Send RP-reachability for 224.0.1.39 on Serial1/0
*Mar 1 05:57:37: PIM(0): Send RP-reachability for 224.0.1.39 on Serial0/0.1
*Mar 1 05:57:37: PIM(0): Send RP-reachability for 224.0.1.39 on Serial0/0.2
*Mar 1 05:57:38: PIM(0): Building Periodic Join/Prune message for
224.64.64.10
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Yasser Aly
Sent: Friday, May 07, 2004 4:30 PM
To: bsinclair@netmasterclass.net; sejimenez@its.co.cr;
ccielab@groupstudy.com
Subject: Re: IP Multicast over FR!!!
Hi Bob,
Would you kindly advice how to verify the following:
A) The mapping agent can receive the dense-mode traffic from the RP on group
224.0.1.39 ?
B) All routers can receive the dense-mode group 224.0.1.40 from the mapping
agent ?
I know how to config Multicast but frequently have hard time troubleshooting
it when it is not working.
Thanx for your help.
Yasser
====================
Sergio,
You can use sparse-dense mode on an NBMA network with Auto-RP, though it
does present some challenges. Generally, you will want to put the mapping
agent at the hub.
There are two basic challenges, though. You must make sure that the mapping
agent can receive the dense-mode traffic from the RP on group 224.0.1.39.
You must also make sure that all of the routers can receive the dense-mode
group 224.0.1.40 from the mapping agent.
Starting in IOS 12.2(7) the global command:
ip pim auto-rp listener
permits you to run auto-rp over interfaces that are only configured for
sparse mode. It allows only the auto-rp groups 224.0.1.39 and 224.0.1.40 to
use dense mode.
HTH,
Bob Sinclair
CCIE #10427, CISSP, MCSE
www.netmasterclass.net
----- Original Message -----
From: "Sergio Jimenez Arguedas" <sejimenez@its.co.cr>
To: <ccielab@groupstudy.com>
Sent: Thursday, May 06, 2004 10:05 PM
Subject: IP Multicast over FR!!!
>Hi Group,
>
>I have a doubt about Auto-RP in NBMA networks, I read it and made the LAB
>
http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/mcst_sol/frm_rlay.
h
>tm, Also I made the LAB in Practical Studies VolumenII.(Chapter 3, pag
248).
>
>Q1: Can I use IP PIM Sparse-dense-mode in a NBMA with AUTO-RP?
>
>With static RP I don4t have problems. The URL link has SPARSE-MODE in the
NBMA
>intf, but the book has SPARSE-DENSE-MODE!!!
>
>I think I can4t use AUTO-RP without DENSE-MODE!!!
>
>
>Thanks,
>
>
>Sergio Jiminez A.
>
>_______________________________________________________________________
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>
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