The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 19, 2008
Filed:
Jun. 21, 2002
Sameh A. Rabie, Kanata, CA;
Tong Shan, Ottawa, CA;
Sameh A. Rabie, Kanata, CA;
Tong Shan, Ottawa, CA;
Nortel Networks Limited, St. Laurent, Quebec, CA;
Abstract
A recovery method for use in a connection-oriented network having nodes interconnected by links for establishing connections within the network, the method described enables the recovery of connections in the network in the event of a failure. The recovery method includes the following steps: (a) assigning connection re-routing priority to the connections in the network based on configured polices in response to the failure; and (b) creating release message bundles based on the assigned connection re-routing priority for use by the nodes in the network to recover connections. More specifically, a failure (e.g., link failure) could affect hundreds or thousands of connections passing through a node. To recover these connections, the node determines which connections should be recovered first and which connections can wait (or may never be recovered). The recovery method determines the priorities of re-routing connections after failure. After the re-routing priorities are determined for connections, the present invention provides mechanisms for bundling release messages and pacing the messages using hold-off timers to maximize the recovery of connections based on various network configurations and implementations.