RE: [TE-wg] TE use in today's networks

["Dmitri Krioukov" <dima@krioukov.net>]

...Or, with MPLS-OMP, you don't configure backup
LSPs in advance -- OMP dynamically establishes them
(http://www.fictitious.org/omp/fail.html).
The trade-off is slower convergence, of course.
--
dima.

> -----Original Message-----
> From: owner-te-wg@ops.ietf.org [mailto:owner-te-wg@ops.ietf.org]On
> Behalf Of Ben Black
> Sent: Monday, May 28, 2001 2:54 PM
> To: Jennifer Rexford
> Cc: alan@routingloop.com; otel@ce.chalmers.se; randy@psg.com;
> Venkata.Naidu@Marconi.com; sah5@hotmail.com; te-wg@ops.ietf.org;
> mthorup@research.att.com
> Subject: Re: [TE-wg] TE use in today's networks
> 
> 
> On Mon, May 28, 2001 at 01:49:01PM -0400, Jennifer Rexford wrote:
> > 
> > > Additionally, there are subsequent ops problems with implementing it
> > > (ie, dramatic impact when one link drops).
> > 
> > Depending on which link fails, the network load after the failure
> > isn't all that bad.  Although some failures can cause problems, often
> > one or two weight changes after the failure is enough to bring the
> > network back to a happy place (analogous to the need to fail over to
> > backup paths in MPLS).
> > 
> 
> The difference in the MPLS case is that the backup paths can be
> configured in advance.  With TE using link metrics, you may be forced
> into changing the configuration when you least want to: during a
> failure situation.
> 
> 
> Ben
>