System and method for retrieving computed paths from a path...

Details System and method for retrieving computed paths from a path... System and method for retrieving computed paths from a path...

2004-11-05

2009-02-24

Ho, Duc C (Department: 2619)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S248000, C370S404000, C709S238000, C709S249000

Reexamination Certificate

active

07496105

ABSTRACT:
A technique retrieves computed path segments across one or more domains of a computer network in accordance with a stateless Path Computation Element (PCE) model. The stateless PCE model includes one or more PCEs configured to compute one or more path segments through the domains in response to a path computation request issued by, e.g., a Path Computation Client (PCC). Notably, each computed path segment is encrypted as a data structure to preserve confidentiality across the domains. Each PCE then cooperates to return a path computation response, including the encrypted path segments and an explicit route object (ERO) containing compressed path descriptions of the computed path segments, to the PCC.

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