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:
Oct. 26, 2021
Filed:
Oct. 16, 2019
Telia Company Ab, Solna, SE;
Reza Neshat, Solna, SE;
Telia Company AB, Solna, SE;
Abstract
The embodiments relate to a method and a routing device. The method comprises introducing a logical hierarchy by defining a plurality of transit layers wherein to each transit layer a transit layer address is assigned and a transit router and wherein each transit router has a unique network address; the layers are organized in a descending order of subnet masks; for each interface between a router and said transit routers, defining, in a routing table of said router, a static route based on the transit layer address and the subnet mask of the transit router interfacing with the router; and if a connection that carries traffic between the router and any of the transit routers fails, selecting a static route in said routing table as a redundant route for carrying said traffic towards its destination.