On Tue, Jan 05, 2010 at 04:39:28PM +0100, Laurent CARON wrote: > Hi, > > Background: > > Two OpenBSD routers hooked each to two ISPs. > > Announced networks: > 2001:7a8:820::/44 > 213.215.28.0/23 > > Relevant config snippets on bgpgw-001: > http://pastebin.com/m77017bcd > > Relevant config snippets on bgpgw-002: > http://pastebin.com/d74d05557
This link is dead. > Strangeness: > > On peer bgpgw-001: v4 and v6 networks are announced. On bgpgw-002 v6 > networks are received from bgpgw-001 but not announced. > > bgpgw-001:/var/log# bgpctl sho rib neigh nerim-ipv6-bgp-peer out > flags: * = Valid, > = Selected, I = via IBGP, A = Announced > origin: i = IGP, e = EGP, ? = Incomplete > > flags destination gateway lpref med aspath origin > AI*> 2001:7a8:820::/44 :: 100 0 i > bgpgw-001:/var/log# bgpctl sho rib neigh nerim-ipv4-bgp-peer out > flags: * = Valid, > = Selected, I = via IBGP, A = Announced > origin: i = IGP, e = EGP, ? = Incomplete > > flags destination gateway lpref med aspath origin > AI*> 213.215.28.0/23 0.0.0.0 100 0 i > > > bgpgw-002:~# bgpctl sho rib neigh nerim-ipv6-bgp-peer out > flags: * = Valid, > = Selected, I = via IBGP, A = Announced > origin: i = IGP, e = EGP, ? = Incomplete > > flags destination gateway lpref med aspath origin > I*> 2001:7a8:820::/44 2001:7a8:820::1 100 0 i The missing "A" is correct in this case. Because 'A' is only set when the network is announced on this router (config has a network XY statement). Since the prefix is in the Adj-Rib-Out it will be sent to the other side. > bgpgw-002:~# bgpctl sho rib neigh nerim-ipv4-bgp-peer out > flags: * = Valid, > = Selected, I = via IBGP, A = Announced > origin: i = IGP, e = EGP, ? = Incomplete > > flags destination gateway lpref med aspath origin > AI*> 213.215.28.0/23 0.0.0.0 100 0 i > IPv6 announcement works for me on my test setup, even accross iBGP sessions. -- :wq Claudio
