The MPLS-OPS Archive

[Yakov Rekhter <yakov@juniper.net>]

Robert,

> > > > > The need for IP multicast, which is tough to do over a 2547 
> > > > > service,
> 
> I don't think it is - we have three large customers using it - one for
> broadcast radio and it works fine for me, is easy to implement and easy to
> support.
> 
> > > > Current IP multicast support in VPLS has its own set of problems, 
> > > > mostly to do with the fact that it uses ingress 
> > replication as the 
> > > > only way to handle IP multicast.
> 
> Agreed - VPLS + Multicast, for me anyway, is an absolute no go area.  It
> ends up 
> just like a broadcast across the mpls network which is a definite no goer.
> 
> > > > This is not to say that the current support for IP 
> > multicast in 2547 does not have its own problems - it does.
> 
> Care to expand on this cause I have no problems with the way it works.

As long as you have only a handful (e.g., 3) of customers who require
multicast current solution for IP multicast in 2547 works ok. But
is it realistic to assume that there always be only a handful of
customers who would require multicast ? If not, then please read
section 4 of draft-raggarwa-l3vpn-mvpn-vpls-mcast-01.txt on what
are the problems.

Yakov.

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