Re: BGP terminology question

["Patrick W. Gilmore" <patrick () ianai net>]

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that route is withdrawn.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