Hello, i have the following setup: ISP-Router | --+----------+----------+----------+ NET-ISP | | | | Quagga1 Quagga2 Quagga3 Quagga4 Test-Quagga1 Bird | | | | | | | | | | | | --+-|--------+-|--------+-|--------+-|--------+-|--------+ | NET-1 ----+----------+----------+----------+----------+----------+ NET-2 <-------official productive AS----------> <-- private test AS--> Quagga1-4 belong to our official AS. The Test-Quagga and the Bird use a private AS. All six BGP-Routers in NET-1 and NET-2 are fully meshed with BGP sessions over NET-1 and NET-2. Only Quagga1 and Quagga2 have BGP sessions to the ISP-Router. On Quagga1 and Quagga2, I see about 290000 accepted prefixes on the BGP-sessions to the ISP router and on the two sessions between Quagga1 and Quagga2. On Bird, I also see about 290000 accepted prefixes on all sessions. 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? What is Bird doing differently than Quagga? Is this a sensible behaviour of Bird? Should/can it be fixed? Mit freundlichen Grüßen Dr. Christian Riede Teamleiter Technik Besuchen Sie uns vom 30.09. bis 02.10.2009 auf der Fachmesse www.SAFEKON.de auf dem Stand E.08 der Karlsruher IT-Sicherheitsinitiative (www.ka-it-si.de). -- _________________________________________ =C=O=N=N=E=C=T== Karlsruhe GmbH Computer und Netzwerktechnik Gebrüder-Himmelheber-Straße 7 D-76135 Karlsruhe Amtsgericht Mannheim HRB 110258 Geschäftsführer: Stefan Kratzer Telefon: +49 (0) 721 20120-0 Telefax: +49 (0) 721 20120-500 Internet: www.it-connect.de E-Mail: christian.riede@it-connect.de _________________________________________