Lower number of IPv6 routes received than expected
Ilya Ovchinnikov
ilya at psn.ru
Fri Oct 1 18:38:50 CEST 2021
Hi!
If you use Bird on Linux, check /proc/sys/net/ipv6/route/max_size -- probably you need to
enlarge it.
With best regards,
Ilya Ovchinnikov
On 01.10.2021 17:04, Adrian Brooks wrote:
> Hello,
>
> I’m hoping someone can help me out with some troubleshooting please. I’m using two IPv4
> sessions to send the Internet routing table into Bird. Taking the first session, the
> advertising router tells me it’s sending 871273 IPv4 unicast routes and 134440 IPv6
> unicast routes towards Bird.
>
> All the IPv4 routes arrive, but I only get ~16k IPv6 routes. I don’t have any filters
> configured to reject routes so I’m puzzled as to what’s going on. How could I
> troubleshoot further? I didn’t see any obviously related messages in the log.
>
> BIRD 2.0.8 ready.
>
> bird> show route import table uplink1.ipv4 count
>
> 871273 of 871273 routes for 871273 networks in table import
>
> bird>
>
> bird> show route import table uplink1.ipv6 count
>
> 16091 of 16091 routes for 16091 networks in table import
>
> The second session (sourced from a different router) is better, but there’s still not enough:
>
> bird> show route import table uplink2.ipv6 count
>
> 45357 of 45357 routes for 45357 networks in table import
>
> Thanks in advance for any pointers,
>
> Regards, Adrian
>
> Adrian BROOKS
>
> *Telecom Networks - Fixed Services Platforms*
>
> Tel. : +352 2424 2301
>
> adrian.brooks at post.lu <mailto:adrian.brooks at post.lu>
>
> POST Technologies
>
> 20, Rue de Reims
>
> L-2417 Luxembourg
>
> www.posttechnologies.lu <http://www.posttechnologies.lu/>
>
> logo_technologies at 2x.png
>
> Ce message et toutes les pièces jointes (ci-après le "message") sont établis à l'intention
> exclusive de ses destinataires et sont confidentiels.
>
> Si vous recevez ce message par erreur, merci de le détruire et d'en avertir immédiatement
> l'expéditeur.
>
> Toute utilisation de ce message non conforme à sa destination, toute diffusion ou toute
> publication, totale ou partielle, est interdite, sauf autorisation expresse.
>
> Internet ne permettant pas d'assurer l'intégrité de ce message, POST Luxembourg décline
> toute responsabilité au titre de ce message, dans l'hypothèse où il aurait été modifié.
>
More information about the Bird-users
mailing list