Thanks Alexander that helps! Best wishes, Amadeus
>---- Original Message ---- >From: Alexander Shikov <a.shi...@dtel-ix.net> >To: "Amadeus" <amad...@freehop.mooo.com> >Cc: bird-us...@network.cz >Sent: Fr, Okt 25, 2013, 5:30 PM >Subject: Re: BGP path prepend / route selection > >Hi, > >On Fri, Oct 25, 2013 at 03:56:45PM +0000, Amadeus wrote: >> Dear list, >> can you explain why the following route (0.0.0.0/0) is selected to go via >> as403, as as4057 clearly displays the shortest path here? >> As you can see I have used bgp_path.prepend() 3x on as403 for its own ASN. >> Thanks, Amadeus >> bird> show route for 0.0.0.0/0 table ffc all >> 0.0.0.0/0 via 169.254.40.3 on ffc403 [as403 14:38] * (150) >> [AS403i] >> Type: BGP unicast univ >> BGP.origin: IGP >> BGP.as_path: 403 403 403 403 >> BGP.next_hop: 169.254.40.3 >> BGP.local_pref: 100 >> via 169.254.40.64 on ffc4064 [as4064 14:32] (100) >> [AS4057i] >> Type: BGP unicast univ >> BGP.origin: IGP >> BGP.as_path: 4064 40120 4057 >> BGP.next_hop: 169.254.40.64 >> BGP.local_pref: 100 >> via 169.254.40.57 on ffc4057 [as4057 Oct14] (100) >> [AS4057i] >> Type: BGP unicast univ >> BGP.origin: IGP >> BGP.as_path: 4057 >> BGP.next_hop: 169.254.40.57 >> BGP.local_pref: 100 > >it is because local-pref. Default route to AS403 has higher local-pref >than one to AS4057. > >-- >Alexander Shikov >Technical Staff, Digital Telecom IX >Tel.: +380 44 201 14 07 >http://dtel-ix.net/