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:
Nov. 18, 2008
Filed:
Apr. 08, 2004
Steven V. Luong, San Jose, CA (US);
Heidi H. Ou, San Jose, CA (US);
Rena W. Yang, Sunnyvale, CA (US);
Xiang Zheng, Santa Clara, CA (US);
Steven V. Luong, San Jose, CA (US);
Heidi H. Ou, San Jose, CA (US);
Rena W. Yang, Sunnyvale, CA (US);
Xiang Zheng, Santa Clara, CA (US);
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Disclosed are methods and apparatus for handling Link State Packets (LSPs) sent between processing nodes within a computer network. At a first node, an LSP sent by a second node is received. The received LSP specifies connectivity information regarding the second node. It is then determined whether one of two conditions is met: either the received LSP is an updated LSP even though it appears older and a corresponding stored LSP fails authentication, or the received LSP fails authentication and it appears newer. If it is determined that one of these conditions is met, as well as purging criteria, then updating procedures are then performed on the LSP information that is maintained by the first node, where the LSP information was originally obtained from a corresponding LSP sent by the second node.