Wired Bird BGP behaviour

[Ondrej Zajicek]

On Mon, Sep 21, 2009 at 10:10:43AM +0200, Dr. Christian Riede wrote:
> On Test-Quagga1, I see only 3 accepted prefixes on the sessions to Bird
> (the direct attached networks).  When I shut down all eBGP sessions on
> Test-Quagga1, I get the expected ~290000 accepted prefixes on the two
> sessions to the Bird. The routing table grows very slowly.
> 
> If I stop Bird and start Quagga on the same system, I see all expected
> ~290000 prefixes on Test-Quagga1 via iBGP.
> 
> It seems that Bird does not re-announce routes to Test-Quagga1 that it
> learnt via eBGP if it also receives those routes from Test-Quagga1 via
> iBGP. This behaviour is different to Quagga.
> 
> Is my suspicion correct?
> 
> Can anyone explain this behaviour?

Perhaps BIRD learned the prefixes from Test-Quagga and prefer that route?
In that case, it shouldn't propagate less prefered routes received
through Quagga1.

Could you send output of 'show protocols all' and part of output of
'show route'?

-- 
Elen sila lumenn' omentielvo

Ondrej 'SanTiago' Zajicek (email: santiago at crfreenet.org)
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)
"To err is human -- to blame it on a computer is even more so."
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