[c-nsp] Source failure in PIM SSM

[alaerte.vidali at nsn.com]

Hi,

This seems interesting, wondering if someone on this discussion group is
using this Cisco feature:

========================================================================
==================================
If a broadcast source fails, IOS Software in the Cisco 7600 Series
router detects the loss of that source, automatically switches that
source's multicast trunk and its branches, and merges it over to a
remaining multicast tree. Only a subset of the subscribers might
experience an almost imperceptible interruption of service, nearly
instantaneously receiving a healthy broadcast stream from the remaining
source. 
========================================================================
================================

Br,
Alaerte

-----Original Message-----
From: ext Jeff Tantsura [mailto:jeff.nsp at gmail.com] 
Sent: Wednesday, June 04, 2008 1:19 PM
To: Vidali Alaerte (NSN - BR/Rio de Janeiro); cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] Source failure in PIM SSM

Hi,

I don't think there's much more than that, any other technology would be
some kind of prioritycast, it's just about how to make one route more
preferable than the other, different metrics, different prefix length
etc.

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp- 
> bounces at puck.nether.net] On Behalf Of alaerte.vidali at nsn.com
> Sent: woensdag 4 juni 2008 16:56
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Source failure in PIM SSM
> 
> Hi,
> 
> Any recommendation for docs handling source failure when PIM SSM is 
> used?
> 
> Example:
> 
> Source 1.1.1.1, group 239.1.1.1 -----R1--------R2--PC_joined 239.1.1.1

> using IGMPv2
> 
> R2 has SSM mapping group 239.1.1.1 to sorce 1.1.1.1
> 
> I have seem 2 options: Anycast and Prioritycast. Would like to here 
> other opinion.
> 
> Tks,
> Alaerte
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