Multicast Internet Route table.

Mikael Abrahamsson swmike at
Tue Sep 2 16:05:42 UTC 2014

On Tue, 2 Sep 2014, Octavio Alvarez wrote:

> I have never used interdomain multicast but I imagine the global 
> m-routing table would quickly become large.

I have set up interdomain routing connecting both to a few peers and a 
Tier1 transit provider. Not many non-research networks to be seen.

Also, since we didn't use it it kept breaking and I had to fix it every 
two years or so, where it probably had been down for months.

I don't believe in Internet-wide multicast happening in current 
incarnation, it's just too fragile and too few people are using it. It 
wouldn't scale either due to all the state that needs to be kept.

Mikael Abrahamsson    email: swmike at

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