Dynamic multilayer routing schemes in GMPLS-based IP+optical networks

Eiji Oki, Kohei Shiomoto, Daisaku Shimazaki, Naoaki Yamanaka, Wataru Imajuku, Yoshihiro Takigawa

研究成果: Article査読

120 被引用数 (Scopus)

抄録

This article presents two dynamic multilayer routing policies implemented in the photonic MPLS router developed by NTT for IP+optical generalized MPLS networks. According to IP traffic requests, wavelength paths called lambda label switched paths are set up and released in a distributed manner based on GMPLS routing and signaling protocols. Both dynamic routing policies first try to allocate a newly requested electrical path to an existing optical path that directly connects the source and destination nodes. If such a path is not available, the two policies employ different procedures. Policy 1 tries to find available existing optical paths with two or more hops that connect the source and destination nodes. Policy 2 tries to establish a new one-hop optical path between source and destination nodes. The performances of the two routing policies are evaluated. Simulation results suggest that policy 2 outperforms policy 1 if p is large, where p is the number of packet-switching-capable ports; the reverse is true only if p is small. We observe that p is the key factor in choosing the most appropriate routing policy. We also describe items that need to be standardized in the IETF to effectively achieve multilayer traffic engineering.

本文言語English
ページ(範囲)108-114
ページ数7
ジャーナルIEEE Communications Magazine
43
1
DOI
出版ステータスPublished - 2005 1 1

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • コンピュータ ネットワークおよび通信
  • 電子工学および電気工学

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