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)
Authors Xihua Fu  , Yuanlin Bao  , Yongli Zhao  , Jie Zhang 
Last updated 2012-03-26 (latest revision 2011-08-30)
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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 (fu.xihua@zte.com.cn)
Yuanlin Bao (bao.yuanlin@zte.com.cn)
Yongli Zhao (yonglizhao@bupt.edu.cn)
Jie Zhang (lgr24@bupt.edu.cn)

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