CONSTRUCTING AND IMPLEMENTING BACKUP PATHS IN AUTONOMOUS SYSTEMS

摘要

In embodiments of the disclosure, constructing and implementing a backup path in an autonomous system (AS) for failure of a first inter-AS link (e.g., serving a first set of prefixes) is described. In one or more embodiments, a method comprises identifying an alternate inter-AS link serving said plurality of prefixes and constructing a tunnel thereto. Also, in one or more embodiments, a method comprises identifying an alternate inter-AS path and constructing a tunnel to an end point on the alternate path. Further, in one or more embodiments, a method comprises forwarding data elements destined for the failed link via a backup path and including a loop prevention attribute in the packet. Still further, a method of managing forwarding of data in an AS is described, e.g., communications between border routers.