On Sun, Jan 16, 2011 at 06:20:43PM +0100, Bartek Kois wrote:
Hi I`ve got two networks in different locations without any connection between them. In each of them I`ve got two BGP routers connected to two separate ISP`s. Both networks have the same AS number but their BGP routers propagate different prefixes (different /23 prefix for each network). The thing is that hosts inside one network don`t see hosts in the second network, because of BGP anti-loop mechanism. Typically this problem can be solved by using "allowas-in" directive. How to achieve the same functionality in BIRD configuration?
It is not possible to do currently (such behavior is not really standard). But it would not be a problem to add an option for ignoring loop check to the next version. If you are able to modify sources and recompile BIRD, you could just remove these lines (1418-1419) from proto/bgp/attrs.c: if (bgp_as_path_loopy(bgp, a)) goto loop; -- Elen sila lumenn' omentielvo Ondrej 'SanTiago' Zajicek (email: santiago@crfreenet.org) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."