nanog mailing list archives

Re: That pesky AS path corruption bug...


From: Vijay Gill <wrath () cs umbc edu>
Date: Tue, 23 May 2000 14:02:29 -0400 (EDT)


On Tue, 23 May 2000, Vadim Antonov wrote:

This is not only practical, but, in fact, the only sane way to do things.
Dropping BGP session causes withdrawal of hundreds or thousands of
acceptable routes.  When the BGP session is reestablished, these routes
will be acquired again, causing a wave of announcements.  When the
invalid route shows up, the cycle is repeated.

What a perfect way to kill the Internet :)

This is what BGP dampening is for.  Dropping a few prefixes here and there
is a good way to make operational debugging of a network of any size,
hell.

With a NOTIFY and a drop, there is a definite positive feedback that
something is majorly wrong and allows people to open top level cases with
vendors.

/vijay





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