Invention Grant
US07881183B2 Recovery from control plane failures in the LDP signalling protocol
失效
从LDP信令协议中的控制面故障恢复
- Patent Title: Recovery from control plane failures in the LDP signalling protocol
- Patent Title (中): 从LDP信令协议中的控制面故障恢复
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Application No.: US11467953Application Date: 2006-08-29
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Publication No.: US07881183B2Publication Date: 2011-02-01
- Inventor: Jing Wu , Michel Savoie , Hussein Mouftah
- Applicant: Jing Wu , Michel Savoie , Hussein Mouftah
- Applicant Address: CA Ottawa, Ontario
- Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of Industry, through the Communications Research Centre Canada
- Current Assignee: Her Majesty the Queen in Right of Canada as represented by the Minister of Industry, through the Communications Research Centre Canada
- Current Assignee Address: CA Ottawa, Ontario
- Agency: Teitelbaum & MacLean
- Agent Neil Teitelbaum; Doug MacLean
- Main IPC: H04J1/16
- IPC: H04J1/16

Abstract:
The invention provides a distributed back-up mechanism and a two-step method for facilitating fast control plane recovery in a switched network. In a preferred embodiment, a Label Information Database (LID) maintained at a control node of a GMPLS network is mirrored to an upstream node using the Label Distribution Protocol (LDP). After a control plane interruption resulting in the LDP restart, the control node, using the mirrored information at the upstream node, conducts first a fast coarse LID recovery wherein only the idle labels are identified, to enable the restarted LDP session to process new connection setup. A detailed LDP state information recovery performs in the background in parallel to the normal LDP operations, e.g. using on-demand LDP queries.
Public/Granted literature
- US20070053359A1 Recovery from Control Plane Failures in the LDP Signally Protocol Public/Granted day:2007-03-08
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