From: Joel W. Ekis (jekis@xxxxxxxxx)
Date: Mon Mar 27 2000 - 10:24:39 GMT-3
Not really. CGMP was developed because snooping ALL multicast packets in the L
2-only switch was very CPU intensive. Cisco used this mechanism to allow the r
outer to inform the switch that a certain port needed to get a specific multica
st stream (serious overgeneralizing here). This relieved the switch's CPU from
a burdensome task.
With the advent of IGMP Snooping capable ASICs, switches no longer load the CPU
when snooping. CGMP is not needed in today's switches. The Catalyst 6k can s
upport CGMP (when acting as the ROUTER in the process). It only supports IGMP
Snooping as a SWITCH.
Joel
At 08:03 PM 3/25/2000 +0000, Kevin Gannon wrote:
>Is it far to say that the core difference between the two Multicast
>detection and port assignment techniques.
>
>Is it that you would use CGMP with cisco kit and IGMP snooping when
>using another vendors routers ?
>
>The snooping technique seems like a kludge.
>
>Regards,
>Kevin
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