From: cannonr (cannonr@attbi.com)
Date: Wed Apr 16 2003 - 20:50:16 GMT-3
Actually, IGMP became the standard on 3550's. 3548's ,24's, and 4000's only
support CGMP. Cisco is now beginning to support IGMP on most of their
platforms. IGMP is now enabled by default on 3550's and 4,000's with sup3
or later. They don't support CGMP directly.
Royce
----- Original Message -----
From: "kym blair" <kymblair@hotmail.com>
To: <rich@myhomemail.net>; <ccielab@groupstudy.com>
Sent: Wednesday, April 16, 2003 7:42 AM
Subject: Re: CGMP or IGMP
> Richard,
>
> IGMP is required for the client to send a join or leave message to the
> router, so you must know how to configure IGMP. The Cisco Proprietary
CGMP
> is a neat feature that allows the router to notify the switch when a
client
> has left a multicast group and to stop delivering the multicasts to that
> port; so while CGMP is not absolutely necessary, it is also easy to
> configure and a candidate for the exam.
>
> An alternative to CGMP is IGMP Snooping. The difficult part for
configuring
> IGMP Snooping is knowing how to turn the IP address into a MAC address;
> otherwise it is easy. Since CGMP is available on the 3550, you probably
> don't need to know how to configure IGMP Snooping; but if 6509's ever
enter
> the Lab, I'd be prepared for snooping.
>
> HTH, Kym
>
>
>
>
>
>
>
>
> >From: Richard Davidson <rich@myhomemail.net>
> >Reply-To: Richard Davidson <rich@myhomemail.net>
> >To: groupstudy <ccielab@groupstudy.com>
> >Subject: CGMP or IGMP
> >Date: Tue, 15 Apr 2003 18:59:39 -0700 (PDT)
> >
> >Out of CGMP and IGMP, does anyone know which one is
> >More likley to be tested?
> >Rich
>
>
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