Hi, after years of running very smoothly and without any problems (and not expecting any), we have decided to move our backbone from OSPF (single area) to iBGP as far as "best practice" recommendations go ... I've been trying to find decent write-ups about certain things, but haven't been too successful as far as certain details go ... maybe somebody has some good pointers for me ...
OK, so baseline recommendation is to only transport loopback/interface IPs in OSPF, do everything else via iBGP ... Now, we already have two route reflectors running which we use for MPLS VRF connectivity, so moving everything else over to them shouldn't be too much of a problem ... For the basic stuff I'm not worried much, dropping the "redistribute static/connected subnets" isn't much of a problem, neither is adding the connected/static routes to the local BGP network statements ... problem is several devices that do not speak BGP ... e.g. two Ascend MAX routers that terminate ISDN PRI lines - they don't speak BGP, so all I can do is let them continue in OSPF ... what would I need to do to get them into the iBGP setup decently? Please note that apart from the dynamic IPs from a certain pool they also hand out static IPs for ISDN dial backup, so just statically routing certain IP ranges to them isn't an option ... which means I need to do some kind of export from OSPF into iBGP for those boxes by some other boxes (every POP/backbone site has Cisco backbone boxes, so appropriate HW is available) Also, we have CPE devices that speak OSPF to our equipment in order to set up dual uplinks to customer sites ... usually one link is a "regular" leased line to one POP/Backbone site, whereas the second is a DSL link where the terminating LAC (at another POP/Backbone site) currently announces the customer routes into OSPF with lower priority ... so I need a way of getting them OSPF informations into iBGP without it making its way into the OSPF backbone ... Any ideas or pointers? Thanks! _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
