Title:
ノード、制御装置及び通信システム
Document Type and Number:
Japanese Patent JP5301014
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a data plane path under data transfer from being disconnected when a fault occurs in only a control plane in a network where data planes for user data communication and control planes for data transfer device management are composed with different media.SOLUTION: When a GMPLS control device of a control plane detects a refresh timeout with adjacent nodes (101), a transmission device corresponding to a fault control device is checked for faults (102). If a fault is confined to the control plane, a path state is maintained (103), and refresh message exchange with the adjacent nodes is continued without freeing resources of the transmission device (104-107).
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Inventors:
Machiko Asaya
Kazuhiro Kusama
Naomichi Nonaka
Kazuhiro Kusama
Naomichi Nonaka
Application Number:
JP2012134053A
Publication Date:
September 25, 2013
Filing Date:
June 13, 2012
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H04L45/02
Domestic Patent References:
| JP2007129782A | ||||
| JP2003318899A | ||||
| JP2008278250A |
Foreign References:
| US20070053359 | ||||
| US7336615 |
Attorney, Agent or Firm:
Ken Hashizume