System and method for inter-domain RSVP-TE LSP load balancing
Originating portfolio: ALU
Estimated expiration: 2033-Apr-04
Potentially relevant companies (3): Cisco Systems, Inc., Huawei Technologies Co., Ltd., Juniper Networks Inc.
Products & technologies (2): Network:Router, Network:Switch
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.
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.
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