From: Adel Abushaev (adel@netmasterclass.net)
Date: Mon Dec 08 2003 - 19:30:30 GMT-3
3550 supports IGMP versions 1,2 and 3. IGMP snooping is enabled globally and
per vlan by default. Immediate
leave is disabled by default.
default mode for ip igmp snooping learning is pim-dvmrp, which includes IGMP
queries. The alternative way is CGMP.
Adel Abouchaev
CCIE# 12037, MCSE
http://www.netmasterclass.net
----- Original Message -----
From: "McCallum, Robert" <robert.mccallum@thus.net>
To: "'Jans van Deventer'" <jano@rhox.com.br>; "'Jaksec, Nick'"
<Nick.Jaksec@acs-inc.com>
Cc: <ccielab@groupstudy.com>
Sent: Monday, December 08, 2003 4:09 PM
Subject: RE: 3550 multicast
> Hmmm isnt this the 3500 switch that only does CGMP. The new 3550's nowdo
IGMP.
>
> Robert McCallum
> CCIE #8757 R&S
> 01415663448
> 07818002241
>
> > -----Original Message-----
> > From: Jans van Deventer [mailto:jano@rhox.com.br]
> > Sent: 08 December 2003 17:43
> > To: Jaksec, Nick
> > Cc: ccielab@groupstudy.com
> > Subject: Re: 3550 multicast
> >
> >
> > Hello Nick,
> >
> > The switch doesn't pay attention to IGMP messages, because it doesn't
> > speak IGMP. It only learns about multicast attached hosts through the
> > attached router that sends CGMP packets to it. The switch will only
> > listen to CGMP messages, but doesn't send any.
> >
> > Regards,
> > Jans
> >
> > Jaksec, Nick wrote:
> >
> > >Does the 3550 run CGMP or does it act like a router and
> > particapate in
> > >IGMP join-groups? Any response would be appreciated, thanks!
> > >
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