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:
Mar. 29, 2016
Filed:
Mar. 21, 2014
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
A method is implemented by a network device to determine loop free alternatives (LFA) for each next hop in a default route to border nodes of a level 1 intermediate system-intermediate system (IS-IS) area of the network device. The method selects a next next-hop for the default route and looks up a corresponding border node for the selected next-hop in a local routing information base (RIB). A next next-hop of the corresponding border node is selected. A check is made whether the selected next-hop of the corresponding border node is the same as selected next-hop of default route. Then an LFA of the selected next-hop of the corresponding border node is assigned as LFA of the selected next-hop of the default route.