IP multicast - per-PIM neighbour QoS

I've given this a lot less thinking time than it deserves, but I
thought I'd put the query to the group anyway.

Assume I have a tunnel interface running in PIM NBMA mode. For
argument's sake, let's say I have 10 neighbours, all of which are
receiving traffic for a single, specific multicast group
(239.195.0.1). At the transport layer, it's UDP on port 5456.

I want to mark traffic (using DSCP bits) destined for one specific PIM
neighbour differently than the others.

I don't know of a way to achieve this, and I've almost convinced
myself it's impossible, but I'm ready to be clued-batted about a nerd
knob I didn't know about.

For those of you wondering what the problem is, think about how to
differentiate the traffic destined for one neighbour from the others.
At the IP layer, it's the same. At the UDP layer, it's the same.

Cheers,
Dale

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Received on Wed Mar 24 2010 - 15:26:06 ART