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

Dragan Jovicic draganj84 at gmail.com
Fri Feb 6 04:10:26 EST 2015

I think you are missing a point.

ISIS route should still be in routing table, just not preferred (static /5
> isis /18).

The issue here is that only static is found in routing table. I hope it is

I tested on two different routers, injecting static route into both ISIS
and BGP. All routers in domain display both ISIS and BGP learned routes,
but ISIS is prefered.

However, on the two routers where the route is injected (a static discard
route), only local static and BGP learned route is showed. That doesn't
make sense.


On Fri, Feb 6, 2015 at 9:41 AM, Mark Tinka <mark.tinka at seacom.mu> wrote:

> On 6/Feb/15 09:28, Dragan Jovicic wrote:
>> Hi,
>> The route is not in routing table of those two routers.
>> Every other router installs redistributed route, except those two which
>> are
>> redistributing the route. Those two only show static/5 route, not ISIS
>> form
>> other neighbor.
>> show isis route does not show that prefix is calculated, so it is not in
>> ISIS RIB hence not in inet.0.
>> But LSP shows redistributed route. Once one of the hosts removes it's
>> static route, only then is new ISIS route installed.
>> I suppose the behavior I expected was to install ISIS route form other
>> neighbor as well, albeit as inactive.
> As static routes are better than routes learned from dynamic routing
> protocols, this is expected behaviour unless you tune the preference of
> either your static route or IS-IS on the affected router.
> Mark.
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/juniper-nsp

More information about the juniper-nsp mailing list