[123730] in North American Network Operators' Group

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Re: 4bytes ASn and RFC1745

daemon@ATHENA.MIT.EDU (Nathan Ward)
Sun Mar 14 06:05:12 2010

From: Nathan Ward <nanog@daork.net>
In-Reply-To: <1268552351.4687.6.camel@localhost>
Date: Sun, 14 Mar 2010 23:04:43 +1300
To: nanOG list <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

On 14/03/2010, at 8:39 PM, Bit Gossip wrote:

> experts,
> what are the consequences of 4bytes ASn (RFC4893) for RFC1745 -
> BGP4/IDRP for IP---OSPF Interaction?
>=20
> In particular with regards to storing the AutonomousSystem in the =
lowest
> 16 bits of the External Route Tag (=3D32 bits)?
> Thanks,
> bit

Little practical consequences I expect. This is taken from RFC3167, =
section 1, in 2001:

During a review of internet standards relating to BGP, it became =
apparent that BGP/IDRP OSPF interaction, as described in RFC 1745, has =
never been deployed in the public internet, and would require =
significant implementation complexity. Since this mechanism has never =
been in use in the public internet, it is proposed to reclassify it to =
Historic.

--
Nathan Ward=


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