From: Victor Cappuccio (cvictor@protokolgroup.com)
Date: Thu Aug 03 2006 - 21:30:20 ART
Sami,
As you know, a multicast packet is seen by the interface just like a
broadcast packet. So the router thinks that is a routing protocol packet, or
something else very important, and place this traffic in the broadcast
hardware queue, this Queue is strict priority, so imagine that a Fee of a
Video on Demand been processed at Strict Priority.. Lots of traffic
So the function of NMBA-mode is to reclassify mpacket into the "normal"
hardware queue.
Other thing to consider in Frame-relay multiple access interfaces, is that
when a join message or leave message is received, the frame-relay interface
is treated as a Whole. In a Lan interface (broadcast) the IGMP Querier would
ask if there are any other member
So the important part of ip pim nbma-mode is to treat all join/leave message
separately, and monitor exactly how many devices are listening to a stream
(Outgoing an Interface = OIL).
Remember that PIM NMBA only works with a PIM Sparse Network, PIM Dense mode
does not have the concept of the join/leave messages.
Saludos,
Victor.-
-----Mensaje original-----
De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de Sami
Enviado el: Jueves, 03 de Agosto de 2006 03:28 p.m.
Para: ccielab@groupstudy.com
Asunto: PIM sparse-dense mode
Group,
When IP PIM NBMA mode is enabled in sparse-dense mode it gives a warning
that it should not be used in spase-dense mode. In case of NBMA R3 Hub and
R1 and R2 spokes and sparse dense is used.First question can we use IP PIM
NBMA mode in real lab , if not what else ?
- Second question can't we use normal access list if task say deny IGMP
request from 237.1.1.1 or ip igmp filter with profile is required..
Thanks
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