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:
Sep. 27, 2005
Filed:
Aug. 09, 2001
Alexey Dimitrievich Zinin, Cupertino, CA (US);
Alexey Dimitrievich Zinin, Cupertino, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A technique resynchronizes a link state database (LSDB) of a non-stop forwarding (NSF) router with the LSDB of a neighbor while maintaining an existing adjacency with the neighbor over a network interface of the router. According to the technique, the NSF router 'pretends' to be a new router by establishing a 'fake' adjacency with the neighbor over the same interface used for the existing adjacency with the neighbor. Believing that the fake adjacency is an adjacency established with the new router, the neighbor does not destroy the existing adjacency with the NSF router. This allows the NSF router to continue receiving and forwarding data traffic over the existing adjacency that was established before, e.g., reloading of routing protocol software on the router.