I think it's hard problem ... First, with your configured policies. Traffic from Internet will not be loadbalanced, without configuration (maximum-paths), BGP chooses only ONE path ... (oldest one between eBGP paths then lowest routerid, then lowest IP address). One solution (the only I see) is to implement policy-based routing. So on your ATM subinterfaces, u have ton configure one route-map (one for each interface).
Example : interface ATM1/0.100 ip policy route-map FROM_SPRINT in ! ! interface ATM1/0.200 ip policy route-map FROM_TELIA in ! route-map FROM_TELIA set ip nexthop 40.40.40.2 ! route-map FROM_SPRINT set ip nexthop 30.30.30.2 I don't think that u can do what u want, just by using BGP attributes, because u can only prefer destinations based on source of routing information (but not prefer these destinations based on source of packets). If anyone know a way to do it with only BGP, explain me !!!!! ot's a very hard problem ... --- Stephane Litkowski CCNA + CCNP ""TMS"" a icrit dans le message de news: [EMAIL PROTECTED] > Hello I have question regarding BGP protocol. I have router > with two BGP connections to Tier-1 providers - Sprint and Telia. To > this router I connected also customer which wants two links, first to > Sprint and second for Telia. I created each link using separate BGP > session and separate E1/Serial interface. My question > is about inbound traffic from Sprint and Telia. Is this traffic go to > customer through good interface ? Or router do load-balancing between > Serial2/0 and Serial2/1 (equal BGP paths to customer) ? My idea is: > traffic from Sprint must return via Serial2/0 and traffic > from Telia must return via Serial2/1. > > Router configurtion: > > ! > interface ATM1/0 > no ip address > ! > interface ATM1/0.100 > description Sprint (AS1239) > bandwidth 10000 > ip address 10.10.10.2 255.255.255.252 > pvc 0/100 > enapsulation aal5snap > vbr-nrt 10000 10000 > ! > ! > interface ATM1/0.200 > description Telia (AS1299) > bandwidth 10000 > ip address 20.20.20.2 255.255.255.252 > pvc 0/200 > enapsulation aal5snap > vbr-nrt 10000 10000 > ! > ! > interface Serial2/0 > description Customer (AS200) - Sprint > bandwidth 1000 > ip address 30.30.30.1 255.255.252 > ! > interface Serial2/1 > description Customer (AS200) - Telia > bandwidth 1000 > ip address 40.40.40.1 255.255.252 > ! > router bgp 100 > network 30.30.30.0 mask 255.255.255.0 > network 40.40.40.0 mask 255.255.255.0 > ! > neighbor 10.10.10.1 description Sprint > neighbor 10.10.10.1 remote-as 1239 > neighbor 10.10.10.1 filter-list 1 out > ! > neighbor 20.20.20.1 description Telia > neighbor 20.20.20.1 remote-as 1299 > neighbor 20.20.20.1 filter-list 1 out > ! > neighbor 30.30.30.2 descripion Customer - Sprint > neighbor 30.30.30.2 remote-as 200 > neighbor 30.30.30.2 filter-list 30 out > neighbor 30.30.30.2 route-map SETLOC in > ! > neighbor 40.40.40.2 descripion Customer - Telia > neighbor 40.40.40.2 remote-as 200 > neighbor 40.40.40.2 filter-list 40 out > neighbor 40.40.40.2 route-map SETLOC in > ! > ! > ip as-path access-list 1 permit ^$ > ip as-path access-list 30 permit ^1239_ > ip as-path access-list 40 permit ^1299_ > ! > route-map SETLOC permit 10 > set local-preference 1000 > set community 100:1 > ! > > best regards, > Tommy Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=54212&t=54192 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
