[quagga-users 14615] Conditional announce of default route
Pedro Ribeiro <[email protected]>
| Newsgroups | gmane.network.quagga.user |
|---|---|
| Organization | IPLNet/IPL |
| Message-ID | <[email protected]> |
Hello to the Quagga community! I'm trying to configure the conditional announcing of the default-route in a failover system with two border routers each running BGP to the ISP (and iBGP between them) and OSPF with the internal routers. I've tried several configurations without success (for IPv4) to make the default route generated by OSPF do disappear when I don't received the default route from the ISP in some of the routers. This behaviour will force the traffic to follow the alternative path using the "backup" router. The redistribution of the default route from BGP to OSPF doesn't generate any route (some literature says it's meant to be that way to avoid loops!), generating the default route with "default-information originate metric 1000 metric-type 1 route-map ospf-defroute-originate" have some inconsistent behaviour. Some matches always succeed others always fail. I've tried to match on tags, BGP communities, next-hop, addresses with ACL and prefix-lists. Can anyone tell me how can I do it? Is there any way to convince BGP to export the default route and avoid the use of "default-information"? What is checked by the route-map associated with the "default-information originate"? What information (BGP attributes, tag, etc) is available to that check? I just need to check by some means if the current default route (local to the border router) was originated from the eBGP session. Please note I have the problem solved in IPv6 between BGP and OSPFv3 using redistribution. best regards. -- Best regards, =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Pedro Ribeiro IPLNet, Redes de dados e comunicações Departamento de Sistemas de Informação e Comunicações Instituto Politécnico de Lisboa Telefone: +351 210 464 701 VoIP: sip:[email protected] =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= _______________________________________________ Quagga-users mailing list [email protected] https://lists.quagga.net/mailman/listinfo/quagga-users