[nsp] Speaking of Multicast

Kristofer Sigurdsson ks at rhi.hi.is
Wed May 19 11:35:48 EDT 2004


Gert Doering, Wed, May 19, 2004 at 05:30:36PM +0200 :
> Hi,
> 
> On Wed, May 19, 2004 at 11:32:33AM +0000, Kristofer Sigurdsson wrote:
> > > Fa0/0.519 on
> > > Cisco 7206VXR----------3524----------3524-----------2924---------Decoder
> > >              .1Q trunk     .1Q trunk     .1Q trunk       VLAN519
> > 
> > I'm pretty sure you have to configure CGMP on the switch ports, otherwise the
> > multicast stream will not go through.
> 
> It's the other way round: unless you configure CGMP or IGMP snooping, the
> multicast traffic will be flooded to *all* ports on *all* switches.

Ehemm...yes.  I stand corrected. :)  What he needed to do, according to his reply,
was to configure PIM, after that everything worked like a charm...

> 
> Ethernet sucks.

We do *not* want to start *that* discussion. :)

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


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