Invention Grant
- Patent Title: In-layer ethernet p-cycle protection scheme
- Patent Title (中): 层间以太网p循环保护方案
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Application No.: US12447022Application Date: 2007-10-12
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Publication No.: US08111613B2Publication Date: 2012-02-07
- Inventor: Alan McGuire , Sergio F. O. Inglima
- Applicant: Alan McGuire , Sergio F. O. Inglima
- Applicant Address: GB London
- Assignee: British Telecommunications public limited company
- Current Assignee: British Telecommunications public limited company
- Current Assignee Address: GB London
- Agency: Nixon & Vanderhye P.C.
- Priority: GB0621676.6 20061031; GB0621686.5 20061031
- International Application: PCT/GB2007/003907 WO 20071012
- International Announcement: WO2008/053146 WO 20080508
- Main IPC: G01R31/08
- IPC: G01R31/08 ; G06F11/00 ; G08C15/00 ; H04J1/16 ; H04J3/14 ; H04L1/00 ; H04L12/26

Abstract:
A method of implementing a p-cycle protection scheme for a communications network comprising a plurality of nodes and interconnecting communications links along which Ethernet traffic is forwarded in a connection-oriented manner. The method comprises for each said Ethernet node in the communications network determining a label associated with each connection-oriented Ethernet path along one or more links in said communications network for which an entry exists in a forwarding table of Ethernet switching apparatus located at said Ethernet node and mapping a plurality of said paths individually identified by said respective labels, to another path defining a p-cycle between logically adjacent nodes in said communications network, wherein each said p-cycle is provisioned in the same layer as said Ethernet traffic.
Public/Granted literature
- US20100039934A1 IN-LAYER ETHERNET P-CYCLE PROTECTION SCHEME Public/Granted day:2010-02-18
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