nanog mailing list archives

Re: Did your BGP crash today?


From: Joel Jaeggli <joelja () bogus com>
Date: Sun, 29 Aug 2010 09:58:48 -0700

On 8/29/10 9:31 AM, Bjørn Mork wrote:
Richard A Steenbergen <ras () e-gerbil net> writes:

Just out of curiosity, at what point will we as operators rise up 
against the ivory tower protocol designers at the IETF and demand that 
they add a mechanism to not bring down the entire BGP session because of 
a single malformed attribute? Did I miss the memo about the meeting? 

I guess you did.

http://tools.ietf.org/html/draft-ietf-idr-optional-transitive-02

rfc 4893 (4 octet as numbers) leverages the assumption that you can send
the as4_path attribute and that even router's that don't understand it
will forward it.

given that 4 byte as numbers exist in the internet and many non-4byte
aware routers exist, that seems like a reasonable assumption.


Bjørn





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