On 2007/03/27 22:21, Thomas beta wrote: > Now, if the link between the openbgp box and cisco3 fails, i still > will be announcing the /24 of cisco3 (i receive the prefix also from > cisco2). I cannot put a prefix filter on the incoming from the > transits, otherwise i will loose contact to the network of cisco3 > when the link is down.
> - can i make filters like: allow from cisco3 source-as 65001 and > transit-as 65000? (is something like AND possible?) Not with AS filters, they just get expanded to multiple rules (bgpd -nv will help a lot if you're working out how rules get expanded) aiui, if you have >1 of a particular type of filter (e.g. as, community, etc) they expand to separate rules, if you have more than one filter of *different* types they are and'ed. So, I think you could probably solve this by tagging the incoming routes from cisco2 with a community, then using 'community xxx source-as 65001' in a filter.
