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:
Aug. 01, 2017
Filed:
Feb. 26, 2013
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Alessio Giorgetti, Pisa, IT;
Giulio Bottari, Pisa, IT;
Piero Castoldi, Pisa, IT;
Filippo Cugini, Pisa, IT;
Francesco Paolucci, Pisa, IT;
Andrea Sgambelluri, Pisa, IT;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
Traffic recovery is supported at a switching node () of an OpenFlow network (). The switching node () has a flow table () for storing flow entries () which determine forwarding of received packets between the ports. A switching node () installs () a flow entry for a back up path in the flow table (). The switching node () renews () the flow entry for the backup path based on at least one of: (i) an association between the flow entry for the backup path and a flow entry for a working path at the switching node, wherein the flow entry for the backup path is renewed when the flow entry for the working path is used to forward a received packet; (ii) receiving a flow entry renewal packet from another switching node on the backup path. A backup path can be configured for each of multiple points of failure in the working path.