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:
Dec. 29, 2009
Filed:
Oct. 04, 2001
Abhay Kumar Roy, San Jose, CA (US);
Alexey Dimitrievich Zinin, Cupertino, CA (US);
Liem Hong Nguyen, Apex, NC (US);
Abhay Kumar Roy, San Jose, CA (US);
Alexey Dimitrievich Zinin, Cupertino, CA (US);
Liem Hong Nguyen, Apex, NC (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
A method and apparatus resynchronizes a link state database (LSDB) of a non-stop forwarding (NSF) router with the LSDB of a neighboring router ('neighbor') while maintaining an existing adjacency with the neighbor in a computer network. An out-of-band resynchronization process executes on the routers to essentially maintain the existing adjacency between the router and neighbor, rather than resetting that adjacency as defined by a conventional resynchronization approach. By keeping the adjacency 'up' from the perspective of a routing protocol, such as the Open Shortest Path First routing protocol, the adjacency can be used for continued data traffic to and from the NSF router.