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RE: How do you put a TV station on the Mbone? (was: Royal Wedding...)
From: George Bonser <gbonser () seven com>
Date: Fri, 29 Apr 2011 12:27:44 -0700

From: Jay Ashworth 
Sent: Friday, April 29, 2011 10:13 AM
Subject: How do you put a TV station on the Mbone? (was: Royal

----- Original Message -----
From: "Ryan Malayter" 

On Apr 28, 11:14 pm, Jay Ashworth wrote:

But... but... how do we count the viewers, then?

Isn't the real problem with global multicast: "How do we ultimately
bill the broadcaster for all that traffic amplification that happened
*inside* every other AS?" It seems like you'd have to do per-packet
accounting at every router, and coordinate billing/reporting amongst
all providers that saw those packets.

See, now, I expected to hear that objection.

Internet engineers are prone to try to solve this problem in favor of
the viewer, and their networks -- with their networks winning in case
of a push.

Should be easy enough on your subscriber ports to use igmp to see who has subscribed to which groups, shouldn't it?  
Just log igmp changes and there's your accounting.  

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