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RE: GMPLS Last Calls
hi ping:
The precise problem addressed and the network
node capabilities are described in
our draft
http://www.ietf.org/internet-drafts/draft-bala-restoration-signaling-00.txt
Regards,
Bala Rajagopalan
Tellium, Inc.
2 Crescent Place
P.O. Box 901
Oceanport, NJ 07757-0901
Tel: (732) 923-4237
Fax: (732) 923-9804
Email: braja@tellium.com
> -----Original Message-----
> From: Ping Pan [mailto:pingpan@juniper.net]
> Sent: Sunday, May 27, 2001 2:08 PM
> To: Bala Rajagopalan
> Cc: 'C. R. Kalmanek'; ccamp@ops.ietf.org; mpls@UU.NET
> Subject: Re: GMPLS Last Calls
>
>
> Bala Rajagopalan wrote:
> >
> > Hi,
> >
> > There are two aspects to this problem:
> >
> > Pre-establishment of protection paths: This
> > is something requiring signaling support during
> > provisioning. Don't see any problem in supporting
> > this under the current GMPLS framework.
> >
> > Real-time restoration signaling: Our
> > view is that a dedicated lightweight protocol
> > is appropriate. (of course, there are other
> > views on this :-). )
> >
>
> Hi,
>
> Many backbone links are SONET, which can redirect traffic to a backup
> channel within 50 msec. This is the requirement that we are
> dealing here
> in MPLS. So in backbone, we have to rely on pre-established LSP' for
> restoration. I doubt there is any simple method for network nodes to
> detect link failure, setup a new session and adjust all sort
> of stuff on
> *real-time*. I could be wrong. Does anybody have the
> measurement timing
> data on ATM crankback?
>
> IMHO, the only reason for using real-time restoration signaling is to
> satisfy end-user applications, where based on the network
> feedback, the
> user application can apply various adaptive mechanisms to renew
> sessions. I don't think this is the within the framework of MPLS.
>
> 2 cents,
>
> - Ping
>
> > I don't see an obvious show-stopper here w.r.t
> > progressing the current drafts for last call.
> >
> > Regards,
> >
> > Bala Rajagopalan
> > Tellium, Inc.
> > 2 Crescent Place
> > P.O. Box 901
> > Oceanport, NJ 07757-0901
> > Tel: (732) 923-4237
> > Fax: (732) 923-9804
> > Email: braja@tellium.com
> >
>