BGP will build the map, and will use the most optimal paths to connect to you, avoiding loops. When one of the peers is unavailable, it will recalculate its paths and select the best one.
BGP will accept this configuration, and will avoid loops. On 2013 Jan 17 (Thu) at 08:34:00 +0000 (+0000), Войнович Андрей Александрович wrote: :I think this would be, but I have the same public AS number on both ends (R1 and R2 - 55555), so BGPd will think that this is loop and will not accept this. : :-----Original Message----- :From: Peter Hessler [mailto:[email protected]] :Sent: Thursday, January 17, 2013 2:19 PM :To: Войнович Андрей Александрович :Cc: [email protected] :Subject: Re: OpenBGPd multiple local AS : :You can absolutely run external BGP and internal BGP with the same AS. :This is a very common configuration. : : :On 2013 Jan 17 (Thu) at 05:36:24 +0000 (+0000), Войнович Андрей Александрович wrote: ::Hello! ::I have public AS and address range, everything is Ok, but now I want to :connect my routers via LAN and announce my public networks between them. ::So I need to configure private AS and peers, as I think: :: ::R1: ::AS 55555 65006 ::# public ISP ::neighbor 1.1.1.1 { :: announce self :: remote-as 44444 ::} ::# my private LAN peer ::neighbor 10.0.41.5 { :: announce self :: remote-as 65005 :: descr "r2" ::} :: ::And R2 router: ::AS 55555 65005 ::# public ISP ::neighbor 2.2.2.2 { :: announce self :: remote-as 22222 ::} ::# my private LAN peer ::neighbor 10.0.41.6 { :: announce none :: remote-as 65006 :: descr "r1" ::} :: ::But when I restart bgpd, I receive error: ::Last error: AS unacceptable :: ::I suppose I have to force announcement of private AS for my private peer, but :didn't find how to do it in config file. :: ::------------------------------- ::Andrey :: : :-- :Last yeer I kudn't spel Engineer. Now I are won. -- If you want to know what god thinks of money, just look at the people he gave it to. -- Dorothy Parker
