From: Scott Morris (swm@emanon.com)
Date: Sun Jun 13 2004 - 17:39:30 GMT-3
It's not so much that you ignore the MA... But the MA plays in to locating
your RP. It is not part of the SPF check though.
:)
Scott
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Tom
Rogers
Sent: Sunday, June 13, 2004 4:14 PM
To: swm@emanon.com; ccielab@groupstudy.com
Subject: RE: PIM RPF intersting....
Scott,
So MA agent is not to of any concern? We can ignore it?
Only ips that we should care about is the ip address's of RP and Source?
Thanks
Tom
Scott Morris <swm@emanon.com> wrote:
If you are looking for the shortest path tree, you are comparing the
multicast source IP to the RP address (mapping agent only tells you where
the RP is, other than that, you don't care).
So those two specific things are looked at, and only that. The router will
automagically do these things.
You can use the ip pim spt-threshold command to tweak this performance as
well.
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, CISSP,
JNCIP, et al.
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Tom
Rogers
Sent: Sunday, June 13, 2004 3:12 PM
To: ccielab@groupstudy.com
Subject: PIM RPF intersting....
Hi all,
I have a question. Again a very stupid one :-) We know that we need to look
out for RPF aka the split horizon issue in multicasting.
We need to make sure multicast stream is coming from the unicast routing
table interface or else we point mroute to the interface configured for PIM
mode.
If it is a Source bases (default) I ll look for source's (media server) ip
address If it is a Shared tree, I ll lookout for RP's ip address.
Q1) Should we, also be looking out for Mapping agent'a ip address also?
Q2) Do we have to lookout for Source and RP addresses at the same time? Coz
intially it is Shared and then it switches to source (default)
Thanx
Tom
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