Hello, as Ondrej mentioned already, you have wrong basic network setup - you're using wrong network masks. H0 thinks, that all nodes (H1, H2, H3) ale in single directly-connected L2 network.
To have BGP working, you need to have basic L3 connectivity working - that means, you must be able to ping each host (and this will not work in your setup). It's not a problem with Bird. With regards, Daniel On 03/07/2018 05:20 PM, Mattia Milani wrote: > all external interface of the peer belong to the same network, and the > address of the network is 10.0.0.0/8 <http://10.0.0.0/8> that is unic. > > sorry for the network picture, i noted after had sended the email that > it get mangled. > now i try to explain it more clearly > > H0 belong to AS2 and have the interface eth1 with the address 10.0.0.1/8 > <http://10.0.0.1/8> and it is connected with H1 > H1 belong to AS4 and have two interfaces: > -eth1 with the address 10.0.1.1/8 <http://10.0.1.1/8> that is > connected with H0.eth1 > -eth2 with the address 10.0.1.2/8 <http://10.0.1.2/8> that is > connected with H2.eth2 > H2 belong to AS3 and have two interfaces: > -eth1 with the address 10.0.2.1/8 <http://10.0.2.1/8> that is > connected with H3.eth1 > -eth2 with the address 10.0.2.2/8 <http://10.0.2.2/8> that is > connected with H1.eth2 > H3 belong to AS1 and have the interface eth1 with the address 10.0.3.1/8 > <http://10.0.3.1/8> and it is connected with H2 > > i hope that this way to explain the network is more clearly > > every interace is on the same network address so do you mean that every > bgp session between two peer need to have different network address? > > > > 2018-03-07 17:01 GMT+01:00 Ondrej Zajicek <santi...@crfreenet.org > <mailto:santi...@crfreenet.org>>: > > On Wed, Mar 07, 2018 at 04:45:55PM +0100, Mattia Milani wrote: > > yeah they are a /8, so bird doesn't support /8? > > now i'll try to modify them. > > > > but sorry, why bird doesn't support /8? > > BIRD of course supports /8 (and any other prefix lengths), but your > network setup have more networks with the same network prefix > (10.0.0.0/8 <http://10.0.0.0/8>), if i understand your network > picture correctly (it get > mangled in mail). Such network setup is not generally correct. > > -- > Elen sila lumenn' omentielvo > > Ondrej 'Santiago' Zajicek (email: santi...@crfreenet.org > <mailto:santi...@crfreenet.org>) > OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, > wwwkeys.pgp.net <http://wwwkeys.pgp.net>) > "To err is human -- to blame it on a computer is even more so." > >
