Confirming source-routed multicast is dead on the public Internet

Sean Donelan sean at
Wed Aug 1 16:25:16 UTC 2018

On Wed, 1 Aug 2018, Aaron Gould wrote:
> As you all have said, to confirm, I use ssm Mcast to distribute TV from 
> satellite down links in the headend, out to a few different remote head 
> ends.  From there it's converted back to RF video and sent to 
> subscribers via cable or hfc plant

I'm aware that multicast is used extensively for "closed enterprise" 
networks in the financial and media industries.  It seems to work well 
when a single organization is paying for the entire network.

My executive official came from that background, so I get why someone 
from that world would think multicast is widely used. Asking enterprise 
network sales people, they keep saying Yes, of course we support 

That's why I wanted to hear from public Internet engineers if multicast 
was still viable on the *public Internet*.

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