Path finding
In current Internet, an Autonomous System (AS) does not know all the available paths to its particular destination.- Selective announcement: ASes might forward routes to a selection of their BGP peers rather than to all of them.
- The selective announcement is based on an individual AS’ traffic engineering policies.
Approach
- Collect the paths seen by the public route collectors: RIPE RIS and Routeviews.
- Stitch the path at a common AS (AS6453 in the figure) to form a new path.
- New path: 15625 19905 6453 3257 8075
