Problem to receive an announcement in BIRD.

[Marcio]

Do you know why SDNRTR route was added as the best and, after that, it was
rejected?



Em dom, 2 de set de 2018 02:08, Maria Jan Matějka <jan.matejka at nic.cz>
escreveu:

> On September 1, 2018 11:23:40 PM GMT+02:00, Marcio <
> marciovinicius.santos at uniriotec.br> wrote:
> >  Dear,
> >
> > I have a topology with many ASes using BIRD except one. This AS(called
> > SDNRTR) is using a SDN technology and it is programmed to announce
> > some
> > prefixes. When it announces, some of it neighbors(BIRD ASes) are
> > rejecting
> > the announcement. Follow the line in BIRD logs.
> >
> > 2018-09-01 21:21:08.000 <TRACE> SDNRTR: Got UPDATE
> > 2018-09-01 21:21:08.000 <TRACE> SDNRTR > added [best] 10.3.1.0/24
> > unicast
> > 2018-09-01 21:21:08.000 <TRACE> kernel1 < replaced 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.000 <TRACE> SDNRTR < rejected by protocol
> > 10.3.1.0/24
> > unicast
> > 2018-09-01 21:21:08.000 <TRACE> R8 < replaced 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.000 <TRACE> R8: Sending UPDATE
> > 2018-09-01 21:21:08.000 <TRACE> SDNRTR: Got UPDATE
> > 2018-09-01 21:21:08.000 <TRACE> SDNRTR > removed [replaced]
> > 10.3.1.0/24
> > unicast
> > 2018-09-01 21:21:08.000 <TRACE> kernel1 < replaced 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.000 <TRACE> SDNRTR < added 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.000 <TRACE> R8 < rejected by protocol 10.3.1.0/24
> > unicast
> > 2018-09-01 21:21:08.000 <TRACE> R8 < removed 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.000 <TRACE> SDNRTR: Sending UPDATE
> > 2018-09-01 21:21:08.000 <TRACE> R8: Sending UPDATE
> > 2018-09-01 21:21:08.001 <TRACE> R8: Got UPDATE
> > 2018-09-01 21:21:08.001 <TRACE> R8 > removed [sole] 10.3.1.0/24
> > unicast
> > 2018-09-01 21:21:08.001 <TRACE> kernel1 < removed 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.001 <TRACE> SDNRTR < removed 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.001 <TRACE> SDNRTR: Sending UPDATE
> > 2018-09-01 21:21:08.001 <TRACE> R8: Got UPDATE
> > 2018-09-01 21:21:08.001 <TRACE> R8 > added [best] 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.001 <TRACE> kernel1 < added 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.001 <TRACE> SDNRTR < added 10.3.1.0/24 unicast
> > 2018-09-01 21:21:08.001 <TRACE> R8 < rejected by protocol 10.3.1.0/24
> > unicast
> >
> > It is showing "rejected by protocol". Do you know what it means? How
> > could
> > i solve this trouble?
>
> R8 added best route, it was exported to others and BIRD also tries to
> export the best route to the source protocol itself (R8 for now). It is
> normal behavior and I don't see any problem there.
>
> Maria
>
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