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ThinkMind // INNOV 2015, The Fourth International Conference on Communications, Computation, Networks and Technologies // View article innov_2015_4_10_70039
A System for Managing Transport-network Recovery According to Degree of Network Failure
 Authors:
Toshiaki Suzuki
Hiroyuki Kubo
Hayato Hoshihara
Kenichi Sakamoto
Hidenori Inouchi
Takanori Kato
Taro Ogawa Keywords: network management; protection; disaster recovery; packet transport Abstract:
A system for managing transport-network recovery according to the degree of network failures is proposed. Under this management system, an entire network is separated into multiple areas. A network-management server prepares a three-step recovery procedure to cover the degree of network failures. In the first step of the recovery, an inside-area protection scheme is used to recover current data-transmission paths in each area. In the second step, an end-to-end protection scheme is applied to the current data-transmission paths. In the third step, an operation plane is changed. Each assumed operation plane is composed of recovery configurations for restoring failure paths for assumed area-based network failures. If a small network failure occurs, it is recovered by the inside-area protection and end-to-end protection schemes. If a catastrophic network failure (caused by a disaster) that cannot be recovered by the protection schemes occurs, it is recovered by changing the operation plane in accordance with the damaged areas. A prototype system composed of a network-management server and 96 simulated packet-transport nodes was developed and evaluated. The system could recover a transport network according to the degree of network failures. In case of a small network failure, 1000 data-transmission paths were reconfigured by the inside-area protection scheme and end-to-end protection scheme in about 11 seconds. If a network failure was not recovered by these protection schemes, all tables for 1000 data-transmission paths were reconfigured by changing the operation plane in about 1.1 seconds. As a result, the proposed system could localize and recover a network failure according to the degree of failures. Pages: 56 to 63 Copyright: Copyright (c) IARIA, 2015 Publication date: November 15, 2015 Published in: conference ISSN: 2326-9286 ISBN: 978-1-61208-444-2 Location: Barcelona, Spain Dates: from November 15, 2015 to November 20, 2015
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