The MPLS-OPS Archive

["HANSEN CHAN" <hansen.chan@alcatel.com>]

Robert,

> > 3) What is the average recovery time from the detection of the failure to the
> > tunnel switch over?
>
> After detection the switch itself is very fast. Less then 1 ms ususally.
> The detection of link failure can take anywhere from few to tens of ms
> and detection of node failure from tens to hundreds ms.

You seem to indicated there could be a wide range of detection speed for link and
node failure. Mind use some examples to illustrate the best and worst scenario.

I also understand GigE link failure is longer that SONET link failure. Is that true
in the industry? What might be the reason?

Cheers,
Hansen

>
>
> Rgs,
> R.
>
> > RickGall1@aol.com wrote:
> >
> > Thank you Robert for your reply,
> >
> > This is an area of concern to me also.  Here are my questions to the group
> > and Robert,
> >
> > 1) Is RSVP-TE fast reroute the most widely used and recommended failure
> > recovery process?   What others are used out there and to they interoperate
> > between vendors?
> >
> > 2) Can I assign a 1 to N back-up tunnel for FRR?
> >
> > 3) What is the average recovery time from the detection of the failure to the
> > tunnel switch over?
> >
> > Thank you all
> >
> > Rick Gallaher
>
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