The MPLS WG Archive

[Yakov Rekhter <yakov@juniper.net>]

Bora,

> >>  My question is as follows:
> >>
> >>  How do you do fast reroute when you have unnumbered interfaces in the
> >>  ERO as in the unnumbered draft? What out of band information is added
> >>  to what's in the ERO when we do CSPF? Is everyone doing it the same
> >>  way?
> >>
> >>  If we use the (newly defined) EERO then fast reroute is the same for
> >>  both numbered and unnumbered interfaces and it actually becomes quite
> >>  easy.
> >
> >Could you point me to the MPLS WG document(s) that specifies
> >how to perform fast re-route ?
> >
> >Yakov.
> 
> Well, there was the ID from George Swallow that we discussed in San 
> Diego. And then there were some discussions on the list that I 
> participated in 1998. Vishal Sharma et al, produced IDs on that 
> subject as well.
> 
> Maybe it is time that we write a BCP on that topic. Would this fall 
> into CCAMP or MPLS? In the last IETF, **all** of the fast 
> reroute/recovery schemes were sent to CCAMP AFAIK.
> 
> I know how we implemented fast reroute and I am sure you know of at 
> least two implementations.
> 
> So if there is interest on the WG, I can volunteer to put together a 
> group of people to write such a BCP.
>
> But my original question still stands,

Your original question is ambiguous, as it didn't spell out
which *specific* fast reroute scheme is used (and as you indicated
above there is more than one such scheme).

Also, are you asserting that none of the fast reroute schemes
could work with unnumbered interfaces in the ERO as specified
in the unnumbered draft ?

Yakov.