Re: Default route question

Hi, 

If I understand correctly, routes towards AS100 from AS300 are going through the direct link due to shortest AS-PATH.

To prefer the routes towards AS200, you can tag the routes at the source [AS100] with BGP communities and then at AS300 make those routes preferred towards AS200 by AS-Prepending direct from AS100 to increase the AS-PATH.

Example of BGP import policy on AS300:

policy-statement EXPAND {
    term AS-EXPAND {
        from {
            as-path AS100;
            community TEST;
        }
        then {
            as-path-expand last-as count 2;
            accept;
        }
    }
}
as-path AS100 "100 .*";

Cheers,

Ashvin