Invention Grant
- Patent Title: Method and apparatus for IP/MPLS fast reroute
- Patent Title (中): 用于IP / MPLS快速重路由的方法和装置
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Application No.: US13902583Application Date: 2013-05-24
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Publication No.: US09577874B2Publication Date: 2017-02-21
- Inventor: Pramodh D'Souza , Lars Ernström , Reda Haddad , Evgeny Tantsura , Jakob Heitz
- Applicant: Telefonaktiebolaget L M Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Nicholson, De Vos, Webster & Elliot, LLP
- Main IPC: H04L12/24
- IPC: H04L12/24 ; H04L12/703 ; H04L12/707 ; H04L12/723 ; H04L12/715

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.
Public/Granted literature
- US20140269261A1 METHOD AND APPARATUS FOR IP/MPLS FAST REROUTE Public/Granted day:2014-09-18
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