[j-nsp] IS-IS not installing route into RIB

Dragan Jovicic draganj84 at gmail.com
Sat Feb 7 05:50:14 EST 2015

Hello Adam,

The main issue here is, because the same route is known via local static,
BGP, and ISIS, the ISIS route is not installed into inet.0, unless BGP
route disappears as well.

For this specific situation we will figure out a workaround, but I would
like to know if this is expected behavior - the link state route available
as local will not be included by default in routing table, and if the same
route is available via BGP, it will never be preferred via link state
unless BGP route is gone as well.

Kind Regards

On Sat, Feb 7, 2015 at 2:06 AM, Adam Vitkovsky <avitkovsky at gammatelecom.com>

> Hello Dragan,
> What is your concern please? -If everything is working. I mean as soon as
> you removed the static you did indeed see the route via ISIS from the
> remote router installed in the RIB and I'm confident you can see both LSPs
> (local and remote) containing the route in the local ISIS LSDB.
> What would be the point of having the route in RIB as inactive please?
> If you'll enable LFA I'm sure you'll see the remote router as an alternate
> for the prefix programed in RIB and FIB for that matter.
> adam
> > -----Original Message-----
> > From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf
> > Of Dragan Jovicic
> > Sent: 05 February 2015 23:51
> > To: juniper-nsp at puck.nether.net
> > Subject: [j-nsp] IS-IS not installing route into RIB
> >
> > Hello.
> >
> > We have two routers in ISP network exporting identical static routes to
> > IS-IS; all routers install static route to closest of the two routers.
> > Those two routes do not install route received over IS-IS as inactive
> into
> > inet.0 table.
> >
> > Only when one of the two routers deletes its static route, is route from
> > IS-IS installed into IS-IS RIB and in routing table.
> >
> > Could anyone shed a light on this - is this expected behavior? Shouldn't
> > both routers install two routes as inactive into inet.0 table?
> >
> > Regards
> > _______________________________________________
> > juniper-nsp mailing list juniper-nsp at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/juniper-nsp
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