On Sat, Mar 06, 2010 at 08:45:24PM +0500, ???? ??????? wrote: > 2010/3/6 Henning Brauer <lists-open...@bsws.de>: > > of course there are (many) working bgpd + carp setups. > > > > * ???? ??????? <chipits...@gmail.com> [2010-03-06 15:14]: > >> second router learns routes from carp master (since it has no direct > >> connection while it is BACKUP), but I only see routes using "bgpctl > >> show rib", not using "netstat -rn". also, there's seems to be loop, > >> because I see many "icmp dup" while pinging some system. also, when > >> BAACKUP becomes MASTER, it drops all the rib and learnes routes from > >> uplink.which is very bad. > > > > the preferred setup is to have one bgp session per carp host to your > > upstream, i. e. you had two, and use carp on the inner interface. > > is it possible to have carp on both inner and upstream interfaces ? > any example configs for that ? > > > > > what you are seeing is kinda expected, the routes are invalid from the > > backup host's POV since it does not have a valid route to the nexthop > > (this is half guessed since you didn't provide any details) > > > there are static routes to BGP speakers > > # cat /etc/hostname.carp4 > vhid 2 pass xxxx carpdev vlan4 advskew 200 x.x.x.x/29 > !/sbin/route add N.N.N.N1/32 x.x.x.x > !/sbin/route add N.N.N.N2/32 x.x.x.x > > well, carp4 is down while the second router is in BACKUP state (and > thus I see routes in RIB, but not in FIB ?) > I'd expect those routes move to FIB as second router becomes MASTER >
I guess you want to look at "set nexthop self" so that the routes don't point over the unavailable carp route but instead over the route the ibgp session runs on. -- :wq Claudio
