Direct protocol affects BGP

Fabiano D'Agostino fabiano.dagostino96 at gmail.com
Mon Mar 23 14:46:34 CET 2020


Hi,
thanks for helping,
I did show route for 192.168.2.22 (which is my neighbor) table all all -->
I get Network not found.
show protocols: bgp established
show protocol all bgp1: 0 imported, 0 exported


Il giorno lun 23 mar 2020 alle ore 14:18 Benedikt Neuffer <
benedikt.neuffer at kit.edu> ha scritto:

> Hi Fabio,
>
> so the routes are in FIB (kernel) but maybe not in RIB (bird).
>
> Can you provide me the output of "show route for <prefix> table all all"
> where <prefix> should be the prefix configured on the connection or the
> ip address of the neighbor.
>
> Regards,
> Bene
>
> On 23.03.20 12:43, Fabiano D'Agostino wrote:
> > Hi Benedikt,
> > the nexthop is resolvable, indeed router1 can ping router2'nic in the
> > same network of router1, with direct protocol disabled. The scenario is:
> > PCa - R1 - R2 - PCb
> > With direct protocol enabled and bgp working: PCa can ping PCb
> > With direct protocol disabled and bgp working: PCa can't ping PCb
> >
> >
> > Il giorno lun 23 mar 2020 alle ore 12:26 Benedikt Neuffer
> > <benedikt.neuffer at kit.edu <mailto:benedikt.neuffer at kit.edu>> ha scritto:
> >
> >     Hi Fabio,
> >
> >     the BGP nexthop field must be resolvable. In other words there must
> be a
> >     route to the neighbor in RIB.
> >
> >     Regards,
> >     Bene
> >
> >
> >     On 23.03.20 12:05, Fabiano D'Agostino wrote:
> >     > Hi all,
> >     > why if I disable the direct protocol the BGP routes are not
> >     > imported/exported? If I run show route, it is empty, while if I
> enable
> >     > the direct protocol show route has directly connected routes and
> >     BGP routes.
> >     > My configuration is very easy, two routers make a eBGP peering and
> >     they
> >     > import and export all routes. I am using Bird 2.0.7.
> >     >
> >     > Thanks,
> >     >
> >     > Fabiano
> >
> >
> >     --
> >     Karlsruher Institut für Technologie (KIT)
> >     Steinbuch Centre for Computing (SCC)
> >
> >     Benedikt Neuffer
> >     Netze und Telekommunikation (NET)
> >
> >     Hermann-von-Helmholtz-Platz 1
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> >     Raum 185
> >     76344 Eggenstein-Leopoldshafen
> >
> >     Telefon: +49 721 608-24502
> >     Fax: +49 721 608-47763
> >     E-Mail: benedikt.neuffer at kit.edu <mailto:benedikt.neuffer at kit.edu>
> >     Web: https://www.scc.kit.edu
> >
> >
> >
> >     Sitz der Körperschaft:
> >     Kaiserstraße 12, 76131 Karlsruhe
> >
> >
> >
> >     KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
> >
> >
> >
> >     Signaturversion: 19.1.0 beta
> >
>
>
> --
> Karlsruher Institut für Technologie (KIT)
> Steinbuch Centre for Computing (SCC)
>
> Benedikt Neuffer
> Netze und Telekommunikation (NET)
>
> Hermann-von-Helmholtz-Platz 1
> Gebäude 442
> Raum 185
> 76344 Eggenstein-Leopoldshafen
>
> Telefon: +49 721 608-24502
> Fax: +49 721 608-47763
> E-Mail: benedikt.neuffer at kit.edu
> Web: https://www.scc.kit.edu
>
>
>
> Sitz der Körperschaft:
> Kaiserstraße 12, 76131 Karlsruhe
>
>
>
> KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
>
>
>
> Signaturversion: 19.1.0 beta
>
>
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