Thus spake Mikael Abrahamsson (swm...@swm.pp.se) on Tue, Sep 02, 2014 at 06:05:42PM +0200: > 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. Inter-domain multicast was largely replaced in practice by CDN's.
In addition to scale issues in keeping state, large wireless L1 environments are hostile to functioning multicast. Dale
