General Musing

blaze your trail

BGP bug? Or feature… #nanog

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I happened on a conversation on NANOG on issues with AS 0 with 0.0.0.0 as an IP, the issue was discovered with an update message. Read on for the full explanation from Ericsson:

There’s nothing wrong in checking ASN in AGGREGATOR, we don’t really want see ASN 0 anywhere, that’s how draft-wkumari-idr-as0 (draft-ietf-idr-as0-00) came into the worlds.

To my knowledge – the only vendor which allows changing ASN in AGGREGATOR is Juniper, see “no-aggregator-id”, in the past I’ve tried to talk to Yakov about it, without any results though. So for those who have it configured – please rethink whether you really need it.

As for SEOS – understanding that this badly affects our customers and not having draft-ietf-idr-error-handling fully implemented yet, we will temporarily disable this check in our code. Patch will be made available.

Interesting…

Written by Daniël W. Crompton (webhat)

December 3, 2011 at 6:57 pm

Posted in Uncategorized

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