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. 01, 2016
Filed:
Jun. 13, 2014
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
A method and system implemented by a network device, where the network device is in a network having a plurality of nodes. The method computes a loop free alternative (LFA) next hop as a backup for a primary path next hop for intermediate system-intermediate system (IS-IS). The method improves LFA computation efficiency by minimizing expansion of prefixes. The method includes expanding all prefixes of the next LFA shortest path first (SPF) destination node and inheriting a next candidate next hop as a current LFA next hop where the next candidate next hop provides link or node protection and better protection than the current LFA next hop.