Invention Grant
US07804768B2 Method for redundant linking lines and wide area network node device
失效
冗余链接线路和广域网节点设备的方法
- Patent Title: Method for redundant linking lines and wide area network node device
- Patent Title (中): 冗余链接线路和广域网节点设备的方法
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Application No.: US11987395Application Date: 2007-11-29
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Publication No.: US07804768B2Publication Date: 2010-09-28
- Inventor: Takanori Sasaki
- Applicant: Takanori Sasaki
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Staas & Halsey LLP
- Priority: JP2006-356473 20061228
- Main IPC: H04J1/16
- IPC: H04J1/16
Abstract:
A WAN node device includes a failure monitoring unit that monitors failure in a first LAN-side input-output unit and a second LAN-side input-output unit. If failure in the first LAN-side input-output unit or the second LAN-side input-output unit is detected, failure is notified to a switching controller. Upon receiving a failure notification, the switching controller selects a normally functioning LAN-side input-output unit. Thus, the WAN node device passes on packets to a LAN-communication linking device via either the first LAN-side input-output unit or the second LAN-side input-output unit selected by the switching controller.
Public/Granted literature
- US20080159124A1 Method for redundant linking lines and wide area network node device Public/Granted day:2008-07-03
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