[49765] in North American Network Operators' Group
Re: multicast (was Re: Readiness for IPV6)
daemon@ATHENA.MIT.EDU (Toerless Eckert)
Tue Jul 9 22:11:24 2002
Date: Tue, 9 Jul 2002 19:10:52 -0700
From: Toerless Eckert <eckert@cisco.com>
To: nanog@merit.edu
In-Reply-To: <20020710014259.GA48080@ussenterprise.ufp.org>; from bicknell@ufp.org on Tue, Jul 09, 2002 at 09:42:59PM -0400
Errors-To: owner-nanog-outgoing@merit.edu
On Tue, Jul 09, 2002 at 09:42:59PM -0400, Leo Bicknell wrote:
> > So, what is the problem?
>
> You have a multicast sender on your network, and the 5 clients are
> on 5 different peer networks. You just carried 5 times the traffic
> on your network, and billed your client once.
Do source based accounting on egress into your peering points and cross
charge sent multicast traffic back to the traffic-source. Or better,
change the peering policy costs for multicast traffic to better adopt
to it's characteristics. But agreed. This is the case where the source
get's the most added value out of your service without the currently
set up accounting schemes to work well. It would certainly be possible
to nicely keep the accounting problem down to the ingress router by
aggregating these egress link counts via PIM.
Cheers
Toerless
