From: Richard Dumoulin (richard.dumoulin@vanco.es)
Date: Tue Aug 10 2004 - 12:37:33 GMT-3
Yes you're right.
For the sparse-dense mode it might be because it can fall back into dense
mode but then the multicast packets needs to be process switched in order
for the router to send the pseudo broadcasts.
In Sparse mode and with nbma mode enabled, the mutlicast packets are not
replicated at L2 but sent at L3 individually to each remote end in a fast
switching way,
--Richard
-----Original Message-----
From: jongsoo.kim@intelsat.com [mailto:jongsoo.kim@intelsat.com]
Sent: martes, 10 de agosto de 2004 17:19
To: ccielab@groupstudy.com
Subject: Regarding "ip pim nbma-mode"
The way I understand this commnad is to enable somewhat multicast capability
on NBMA link such as F/R PVC.
This is my interpretation.
So let's say R1,R2,R3 are PIM neighbor, if R1 connected to R2 and R3 via
multipoint PVC using hub and spoke, then by using this command, R1 can send
multicast to R2 and R3, which of course should be two identical multicast
traffic stream but with different DLCI.
If this is the case, I think only R1 needs this commnad as R1 is HUB and R2
and R3 are spoke.
Am I in a right track on this??
Also, I can't figure out why sparse-dense mode shouldn't use this command.
Thanks folks
JK
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