Re: Static LSP Configuration

[Curtis Villamizar <curtis@workhorse.fictitious.org>]

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In message <3CD6F53E.52779883@nayna.com>, Sudheer Dharanikota writes:
> 
> > >
> > > I do know of providers who want to eliminate the APS on the sonet
> > > links under their MPLS network cutting some costs significantly (but
> > > with all things considered, not in half).
> >
> > What mechanism will they use to detect the failure then?
> 
> With most of the *recent* L2/L1 technologies, failure dection is not the
> only problem.
> Without APS-like mechanisms (sub-second) failure reporting is also a major
> problem.
> In my opinion, for the sake of the underlying technologies which does not
> have
> APS-like reporting mechanisms, we need to optimize our signaling protocols
> and propose sensible control plane topologies.
> 
> Regards,
> 
> sudheer


SONET detection is used.  SONET APS protection is not.  FRR yields
<50msec restroation is needed, and standby LSPs yields a few seconds
at worst (consistently sub second is certainly possible with standby,
but not yet acheived by today's implementations afaik).

Curtis