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A Dual-end Recursive PCE-Based Computation (DRPC) Procedure to Compute Shortest Constrained Inter-domain Traffic Engineering Label Switched Paths

Document Type Expired Internet-Draft (individual)
Expired & archived
Authors Xihua Fu , Yuanlin Bao , Yongli Zhao , Jie Zhang
Last updated 2012-03-26 (Latest revision 2011-08-30)
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


A dual-end recursive PCE-based computation procedure (DRPC) is proposed to compute shortest constrained inter-domain traffic engineering label switched paths based on BRPC in Multi-protocol Label Switching (MPLS) and Generalized MPLS (GMPLS) networks. By recursively performing shortest path algorithm and transferring the segmental path computation result from both ends bi-directionally, they meet at one of the Middle PCEs, generating a directional shortest path graph into which the two shortest path trees are stitched together. Therefore, the end-to-end constrained inter- domain traffic engineering label switched path, even k shortest paths can be gained from the directional shortest path graph directly.


Xihua Fu
Yuanlin Bao
Yongli Zhao
Jie Zhang

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)