From: Antonio Soares (amsoares@netcabo.pt)
Date: Wed Mar 28 2007 - 12:28:31 ART
Hello,
Very interesting discussion.
So may we assume that the Prune Override mechanism works the same way in
NBMA as in Broadcast Networks? And that the "ip pim nbma-mode" is only an
optimization feature available with PIM-SM ?
If this is true, at least the document bellow should be updated (see figure
3):
http://www.cisco.com/en/US/tech/tk828/technologies_white_paper09186a00800d6b
61.shtml#xtocid3
Thanks,
Antonio
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Bob
Sinclair
Sent: terga-feira, 27 de Margo de 2007 21:25
To: Bit Gossip
Cc: ccielab
Subject: Re: multicast very fundamental
Bit Gossip wrote:
> Happy to hear that I am not the only one to experience this 'behind
> the curtains' prune override.
> As a consequence of this behaviour, the only real benifit of 'ip pim
> nbma-mode' is:
> - efficiency in sending the group to only PVCs that really want it
> - performance in that in can be performed in CEF mode instead of
> process switch
>
I would add two additional benefits of nbma-mode: it permits spoke-to-spoke
multicast, and permits a BSR to be on a spoke.
--Bob Sinclair CCIE 10427 CCSI 30427 www.netmasterclass.net
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