The MPLS WG Archive

["Thomas D. Nadeau" <tnadeau@cisco.com>]

At 11:23 AM 12/13/2002 -0800, Kireeti Kompella wrote:
>Hi Curtis, Shahram:
>
>On Fri, 13 Dec 2002, Curtis Villamizar wrote:
>
> > > I was more thinking in terms of how to make sure the backup/detour
> > > paths are working fine, while the traffic is still on the working path.
> >
> >
> > Currently you'd have to do that from each PLR.
>
>Agreed.  One question is, do the PLRs do this autonomously, or should
>this be triggered by LSP pings for the protected LSPs (to be more
>accurate, LSP traceroutes)?  For now, I'm happy to go with the former.

         It is probably best to let them do this whether or not the LSR
is programmed to do so.

> > We also don't provide a
> > means to tell a specific PLR to exercise its detour and report back.
>
>Having the PLR exercise (i.e., send pings along) its detours is up
>to the implementation.  Right now, there is no LSP ping mechanism for
>reporting back.  Should there be?  (If so, I would rather leave it to
>a follow-up doc.)

         I think this belongs in another document specific to FRR.

         --Tom



> > Let's wait and hear from Kireeti or other authors whether they think
> > anything should be added or whether the intent is to require testing
> > initiated at each PLR.
>
>You've heard from me (insofar as you can hear email) :-)
>
>Kireeti.

"The difficult, we do immediately.  The impossible takes a little longer." 
-- Air Force Motto