The MPLS-OPS Archive

[Yakov Rekhter <yakov@juniper.net>]

Andrew,

> Indeed.  Can you give us any insight into possible developments in this
> area?  I have an IP TV application that is going to depend heavily on this
> in the future.

see draft-raggarwa-l3vpn-mvpn-vpls-mcast-01.txt for some of the ideas.

Yakov.

> 
> Thanks
> 
> ______________________________
> Andrew Walding, President
> CellStream, Inc.
> Tel: 972-747-0007   Fax: 972-747-1130
> www.cellstream.com
>  
> 
> > -----Original Message-----
> > From: Yakov Rekhter [mailto:yakov@juniper.net] 
> > Sent: Monday, January 17, 2005 8:42 AM
> > To: Irwin Lazar
> > Cc: raszuk@cisco.com; sthaug@nethelp.no; 
> > Andrew.Frazer@nz.unisys.com; mpls-ops@mplsrc.com
> > Subject: Re: [MPLS-OPS]: Re: Layer 2 MPLS VPN 
> > 
> > Irwin,
> > 
> > > The need for IP multicast, which is tough to do over a 2547 service,
> > 
> > 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.
> > 
> > While ingress replication is quite viable in the scenarios where the 
> > bandwidth of the multicast traffic is low or/and there is a sparse 
> > distribution of receiving PEs, such that the number of replications 
> > performed by the ingress PE on each outgoing interface for a 
> > particular 
> > customer multicast data packet is small, in other scenarios viability
> > of ingress replication is (highly) questionable. And other scenarios
> > do exist in real life.
> > 
> > This is not to say that the current support for IP multicast in 2547 
> > does not have its own problems - it does.
> > 
> > The bottom line is that neither current support for IP 
> > multicast in VPLS,
> > nor in 2547 VPNs is good enough.
> > 
> > Yakov.
> > 
> > -------
> > The MPLS-OPS Mailing List
> > Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
> > Archive: http://www.mplsrc.com/mpls-ops_archive.shtml
> > 
> > 
> 

-------
The MPLS-OPS Mailing List
Subscribe/Unsubscribe:  http://www.mplsrc.com/mplsops.shtml
Archive: http://www.mplsrc.com/mpls-ops_archive.shtml