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. 23, 2018
Filed:
Jul. 16, 2015
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
TELEFONAKTIEBOLAGET LM ERICSSON (publ), Stockholm, SE;
Abstract
According to the present invention, there is provided a method for restoring a MultiProtocol Label Switching (MPLS) ring network in the event of a network link failure. The MPLS ring network comprises a path for traffic around the ring comprising a plurality of sequential Label Switched Paths (LSPs). The method comprises, at a network node in the MPLS ring network: detecting a failure along a network link traversed by a first LSP having an end point at the network node; in response to the detecting, encapsulating an Ethernet Ring Protocol (ERP) restoration message in a restoration pseudowire; and transmitting the restoration pseudowire within a second LSP over a subsequent network link. The method also comprises, at a network node in the MPLS ring network: receiving a first LSP comprising a pseudowire; detecting that the pseudowire is a restoration pseudowire comprising an Ethernet Ring Protocol (ERP) restoration message; and in response to the detecting, processing the ERP restoration message. There is also provided a network node for an MPLS ring network, and an MPLS ring network.