[c-nsp] 3650G Port security and multicast.

Gert Doering gert at greenie.muc.de
Mon Feb 25 16:44:24 EST 2008


Hi,

On Mon, Feb 25, 2008 at 09:30:25PM +0000, A.L.M.Buxey at lboro.ac.uk wrote:
> > Be careful with that.  Killing *all* multicast will kill IPv6.
> 
> really? i wasnt aware that IPv6 *required* multicast or used multicast
> to operate - which feature or part of IPv6 is this?

Neighbour discovery ("the thing that replaces ARP") and router advertisement /
router discovery all use multicast.

There is no broadcast in IPv6 anymore, it has been completely replaced by
job specific multicast groups.

gert

-- 
USENET is *not* the non-clickable part of WWW!
                                                           //www.muc.de/~gert/
Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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