BGP terminology question
Patrick W. Gilmore
patrick at ianai.net
Sun Nov 6 19:05:21 UTC 2005
On Nov 6, 2005, at 1:05 PM, NetSecGuy wrote:
> I asked this question on inet-access and it was suggested I try NANOG.
>
> I understand BGP flapping to be announcements followed by withdraws
> over a short period. I am seeing a peer with a large number of
> announcements and the normal number of withdraws. Is there a term
> to describe what I am seeing? I'd like to understand what is
> happening, but I've been looking for more info and can't seem to
> find anything. I suspect I am just not using the right words to
> search.
>
> If there isn't a term, why would a peer announce thousands of time
> an hour with very few withdraws?
There is a term, it's called "broken".
A peer should never announce a route it has already announced unless
that route is withdrawn. (If the session goes down or is reset, that
counts as a withdrawal.)
--
TTFN,
patrick
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