[j-nsp] Avoid transit LSPs

Dave Bell me at geordish.org
Thu Jan 24 13:09:41 EST 2019


I'm not aware of any option that will do this.

The three solutions that I can think of are:
Link colouring like Adam suggests
An explicit path that avoids the interfaces you are worried about
Set the RSVP cost for the interfaces really high

Dave

On Thu, 24 Jan 2019 at 17:01, Luis Balbinot <luis at luisbalbinot.com> wrote:

> It's a permanent thing.
>
> These boxes are PE routers that are not supposed to handle transit
> traffic but during certain network events a few FRR bypass LSPs are
> established through them because that's the only remaining path.
>
> Something easier like a "no-eligible-backup" toggle like the one we
> have with OSPF LFA would be nice.
>
> Luis
>
> On Thu, Jan 24, 2019 at 2:53 PM <adamv0025 at netconsultings.com> wrote:
> >
> > > Luis Balbinot
> > > Sent: Thursday, January 24, 2019 4:45 PM
> > >
> > > Hi.
> > >
> > > How could I prevent a device from getting transit RSVP LSPs being
> > > established through it? I only want it to accept ingress LSPs destined
> to
> > that
> > > box.
> > >
> > If this is a permanent thing,
> > You could create a colouring scheme where all links connected to this
> node
> > have to be avoided by all LSPs with the exception of LSPs terminated on
> this
> > node (or originated by this node).
> >
> > If this is a maintenance thing,
> > There's a command that can be enabled to drain all transit LSPs out the
> box.
> > But, all the LSPs would need to be configured with this capability in the
> > first place.
> >
> >
> > adam
> >
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