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FS#2071 — annonce peering

Concerne le projet— Reseau Internet et Baies
Incident
tout le reseau
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Un peer d'AMSIX a annoncé les routes qui ne les concernait pas.
Le routage s'étant adapté, une grosse partie de trafic sortait
par ce peer. Ceci a provoqué des pertes de packets surtout sur
le reseau de Roubaix.

On regarde de plus près l'origine du probleme et comment eviter
ce genre de probleme.
Date:  mercredi, 26 mars 2008, 15:32
Raison de clôture:  Done
Commentaire de OVH - mercredi, 26 mars 2008, 14:29

Il s'agit de l'AS 41692 OpenCarrier e.G.

On voit sur le PNG de graphe le pic. Le port a été saturé.
http://demo21.ovh.com/5fa9bfc83d9b9a1034311825c7ee91c2P/


Commentaire de OVH - mercredi, 26 mars 2008, 15:29

----
We've recognised the issue as well and were able to revert back to
normal shortly after. Should have latest a few minutes.

Problem was that due to a filter-problem a downstream of ours was able
to announce a default-route to us - which unfortunately got propagated
through to you.

As a permanent countermeasure we've taken steps to
- properly filter routes from downstreams (e.g. not accept defaults)
and
- filter routes sent to peers to explicitly not include defaults


Sorry for any inconvenience this caused for you. In case of unanswered
questions, please feel free to contact us.
---

Probleme reconnu, localité et reglé de notre côté aussi. Nous
avons mis les filtrages des annonces qui ont posé des problemes.