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:
Mar. 11, 2008
Filed:
Jun. 02, 2003
Scott S. Pegrum, Nepean, CA;
Matthew M. Yuen, Ottawa, CA;
Nabila Ould-brahim, Kanata, CA;
Gregory A. Wilbur, Ottawa, CA;
Scott S. Pegrum, Nepean, CA;
Matthew M. Yuen, Ottawa, CA;
Nabila Ould-Brahim, Kanata, CA;
Gregory A. Wilbur, Ottawa, CA;
Nortel Networks Limited, St. Laurent, Quebec, CA;
Abstract
Failover protection is provided on the same facilities for a network connection passing through a high-availability router having shared resources managed by two control processors that respectively maintain a forwarding information bases (FIB). The two processors run asynchronously in a master/standby relationship. Integrity of processes running on the control processors is monitored and a forwarding engine forwards packets according to a FIB maintained by an in-service one of the control processors. If one of the control processors fails, the other control processor uses the same bandwidth on the same facility to continue forwarding packets for a network connection. Identifiers in each packet associated with the network connection are used to indicate the reserved bandwidth associated with the network connection.