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:
Feb. 21, 2017
Filed:
May. 24, 2013
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Pramodh D'Souza, San Jose, CA (US);
Lars Ernström, Palo Alto, CA (US);
Reda Haddad, San Jose, CA (US);
Evgeny Tantsura, Palo Alto, CA (US);
Jakob Heitz, Santa Clara, CA (US);
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
A method is disclosed that is implemented by a router for executing an internet protocol fast reroute process in response to a network event invalidating a current route to a destination node without degrading forwarding plane functionality or performance caused by indirect forwarding information base lookups. The method comprises a set steps including receiving or generating the network event by the router, the network event associated with a network event identifier and looking up the network event identifier in an event table to determine routes that are affected by the network event. The method further includes determining whether a route with a fast reroute forwarding object is affected by the network event in the routing information base and overwriting a current next hop forwarding object using a backup next hop forwarding object in the forwarding information base.