nanog mailing list archives

Re: World IPv6 Only Day.


From: Iljitsch van Beijnum <iljitsch () muada com>
Date: Thu, 9 Jun 2011 20:14:36 +0200

On 9 jun 2011, at 19:34, Ray Soucy wrote:

But you're correct that without MLD snooping IPv6 ND traffic is on par
with IPv4 broadcast traffic and not a major problem.  It does mean,
however, that a large IPv6 multicast stream, like video or system
imaging, would be about as bad as doing so on IPv4 without IGMP
snooping.

Of course the ethernet hardware in the host will filter multicast packets the host isn't listening for, so it just 
wastes some bandwidth on ports where the traffic isn't needed. This is unlike ARP, each ARP packet wakes up the CPU.

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