System and method for inter-domain RSVP-TE LSP load balancing

摘要

A system, method and apparatus for causing network routers such as Area Border Routers (ABRs) to use a preferred tie-breaking mechanism to select one path in the event of an ERO expansion operation resulting in multiple equal cost paths.

主权项

1. A method, comprising:
receiving a Resource Reservation Protocol (RSVP) path message including an indication of a preferred tie-breaking mechanism; based on a determination that an Explicit Route Object (ERO) expansion operation to determine a next Label Switched Path (LSP) hop results in identification of multiple equal cost paths satisfying a set of constraints for the LSP, selecting one of the multiple equal cost paths according to the preferred tie-breaking mechanism; and forwarding the RSVP path message including the indication of the preferred tie-breaking mechanism toward a next hop.