Invention Grant
US08665699B2 Link failure detection and traffic redirection in an OpenFlow network
有权
OpenFlow网络中的链路故障检测和流量重定向
- Patent Title: Link failure detection and traffic redirection in an OpenFlow network
- Patent Title (中): OpenFlow网络中的链路故障检测和流量重定向
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Application No.: US13111609Application Date: 2011-05-19
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Publication No.: US08665699B2Publication Date: 2014-03-04
- Inventor: Elisa Bellagamba , James Kempf , Pontus Skoldstrom
- Applicant: Elisa Bellagamba , James Kempf , Pontus Skoldstrom
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Coats & Bennett, P.L.L.C.
- Main IPC: G01R31/08
- IPC: G01R31/08
Abstract:
Failure detection and traffic redirection are implemented in an OpenFlow switch. Link failure detection packets, such as Bidirectional Forwarding Detection (BFD) packets, are periodically sent out on links to peer OpenFlow switches, such as via the Multi-protocol Label Switching (MPLS) Transport Profile (MPLS-TP). Link failure detection packets are received from the peer OpenFlow switches on the links, and monitored. A link failure is detected if no incoming link failure detection packets are received on a link for a predetermined interval. In the event of a link failure, traffic is redirected from the failed link to a backup link by altering entries on a flow table of the OpenFlow switch.
Public/Granted literature
- US20110286324A1 Link Failure Detection and Traffic Redirection in an Openflow Network Public/Granted day:2011-11-24
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