Calculating and billing IP multicast usage on the Internet

Posted by obvio171 on Server Fault See other posts from Server Fault or by obvio171
Published on 2010-03-24T05:44:22Z Indexed on 2010/03/24 5:53 UTC
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Filed under:

multicast

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ip

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internet

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isp

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routing

I've been searching for the reasons why IP multicast isn't widely supported on the Public Internet, and a commonly-cited reason is the difficulty ISPs have in tracking Multicast usage for later billing. Given this difficulty, since ISPs control the routers and they're not forced to support Multicast (as per IPv4), they just disable it. I couldn't find what this difficulty was though.

Since an ISP has full control of any inbound and outbound traffic, be it Unicast or Multicast, what's the difficulty in tracking and billing the latter that does not exist in the former?

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