[rbak-nsp] SE600 BGP Session drops

[Florian Lohoff]

On Thu, Apr 19, 2012 at 01:33:01PM +0200, Voigt, Thomas wrote:
> 
> Hi Florian,
> 
> > has anyone else Full Routing on their Smartedges and saw BGP Session
> > drop yesterday? We had BGP drops simultanous on all Smartedges.
> 
> Not yesterday, but we had this several times last year.  You will
> find some threads about this in the nanog mailing list.
> 
> The reason is, that someone sends this wrong aggregator AS0. The
> Redbacks reset then the BGP-Session (like described in the RFC).
> 
> We've seen this here in SEOS 6.4.1.2. After installing a patched BGPD
> (got it from Ericsson Support) in this SEOS the problem seems to
> be away.  Don't know, if the behaviour is the same in 6.5 train.

Meanwhile we are in contact with the Ericsson Support and the comment was
that its fixed in 6.5.1.4 although they say they are not ignoring 
unknown/malformed packets because thats against the BGP spec which
sounds interesting in what happens if such a packet comes by.

Flo
-- 
Florian Lohoff                                                 f at zz.de
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