[nsp] Speaking of Multicast

[Kristofer Sigurdsson]

Gert Doering, Wed, May 19, 2004 at 06:58:45PM +0200 :
> Hi,
> 
> On Wed, May 19, 2004 at 04:52:02PM +0000, Kristofer Sigurdsson wrote:
> > > Isn't it the case that newer boxes (e.g. 3550) do IGMP, older boxes
> > > do CGMP? At least that's how I think of it.
> > We're using CGMP on 3550 boxes...
> 
> CGMP as a router, or CGMP as a switch?
> 
> I know about CGMP-as-a-router (so the 3550 is the L3 device, that's
> telling *other* L2 devices where to send multicast packets to), but to my
> knowledge, CGMP-as-a-switch (the 3550 listens to a separate L3 router) is
> not supported.
> 
> *If* it is, I stand corrected, and apologize...

Sorry, my bad, should have noted that we are using the 3550 boxes as 3rd layer
devices (I'm not very inclined to calling these things "routers" :D).

-- 
Kristófer Sigurðsson		   | Tel: +354 525 4103 / MSN: ks at rhi.hi.is
Netsérfræðingur/Network specialist | Reiknistofnun HÍ/University of Iceland