第326回研究講演会開催報告
- 日時:平成18年9月27日(水) 15:00−16:30
- 会場:東北大学工学部 電気情報系3号館 303号室
- 演題:Availability-Constrained Shared Backup Path Protection (SBPP) for GMPLS-Based Spare Capacity Reconfiguration
- 講師:Professor Pin-Han Ho, University of Waterloo, CANADA
- 概要:
Shared-backup path protection (SBPP) has been widely studied in the
Generalized MPLS networks due to its efficient spare capacity sharing
and flexibility in service provisioning. This paper presents a
policy-based model for evaluating the end-to-end (E2E) availability
of a SBPP connection by assuming that no more than two simultaneous
failures could possibly occur in the network. To minimize the
redundancy while meeting the E2E availability requirement, a new
parameter is defined for each connection, called protection level,
which creates a framework of partial restoration from any unexpected
failure. Based on the proposed availability model, two novel
policy-based Linear Program (LP) formulations are introduced - called
failure dependent and failure independent policies, which aim to
reconfigure the spare capacity allocation for dynamic provisioning of
SBPP connections. Extensive simulations are conducted to validate the
proposed availability model and demonstrate the effectiveness of the
spare capacity reconfiguration architecture. The proposed
availability-aware spare capacity reconfiguration (SCR) approaches
are then implemented on top of a well known survivable routing scheme
- Successive Survivable Routing (SSR), where the spare capacity
saving ratio is taken as the performance measure. We will show that
the proposed SCR framework is an effective approach for achieving the
GMPLS-based recovery in packet-switched networks.
- 講演報告:
現在、光ネットワークで注目されているGMPLSなどに多数の質問が寄せられ,
活発な質疑応答が行われた.講師Pin-Han Ho 教授からの丁寧な回答に加えて
参加者の方からも貴重な意見を頂くなど,大変充実した内容であった.
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- 参加者:35名
- 報告者:堀口進 (東北大学)