OSPF-TEネットワークにおけるリンク負荷ランク方式の実装(フォトニックネットワーク関連技術,一般)

概要

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This paper shows an implementation of our link-load ranking (LLR)scheme for open shortest path first traffic engineer (OSPF-TE)networks where a routing control is centrally performed by a network controller. In the OSPF-TE networks, minimizing the maximum link-load is one of feasible solutions to enhance routing perfor- mance. The network controller needs to know the maximum link-load in the network. The LLR scheme is used to reduce the number of advertisements in the OSPF-TE network when either the network topology or link-load values are changed. The LLR scheme advertises only the updated information that is possible to be the maximum link-load. In the implementation point of view, a key question is how to simplify the LLR scheme implementation. The presented design is a simple way to implement the LLR scheme without modification of the standard OSPF process. In this design, an LLR filtering process is added before the standard OSPF process to judge that the new information should be advertised or not, based on the LLR scheme. If the new information should be advertised, the LLR filtering process passes the information to the standard OSPF process. Otherwise, the new information is deleted. The demonstration shows that the presented implementation performs as the idea of the LLR scheme.
一般社団法人電子情報通信学会の論文
2013-03-04