公开(公告)号：US10165090B2

公开(公告)日：2018-12-25

申请号：US14473680

申请日：2014-08-29

Applicant: Metaswitch Networks Ltd

Inventor： Fiona Corden ,  Steve Balls ,  Alex Pollitt ,  Shaun Crampton ,  Jonathan Harrison ,  Jeff Rollins

IPC: H04L29/06 ,  H04L12/715 ,  H04L12/713 ,  H04L29/08

Abstract: Measures for transferring routing protocol information between a software defined network and one or more external networks are provided. A control node in a software defined network (SDN) is configured to maintain a protocol information database comprising routing protocol information for one or more switching nodes in the SDN. In response to detecting occurrence of a predetermined trigger event, the control node modifies the routing protocol information in the protocol information database, and determines whether the one or more switching nodes include an edge switching node. In response to the determination, a routing protocol message is transmitted from the control node to the edge switching node for forwarding via an external network interface. The routing protocol message includes data generated on the basis of the modified routing protocol information.

公开(公告)号：US10326690B2

公开(公告)日：2019-06-18

申请号：US14869661

申请日：2015-09-29

Applicant: Metaswitch Networks Ltd

Inventor： Alan Elder ,  Jonathan Harrison ,  Gawain Bosworth

IPC: H04L12/709 ,  H04L29/06 ,  H04L12/703 ,  H04L12/927

Abstract: A system and method of operating a network node configured as part of a link aggregation system. The system includes a plurality of first network nodes and a plurality of second network nodes for providing connectivity to first and second networks respectively, and a plurality of links between the first network nodes and the second network nodes. The network node is configured as one of the first network nodes.The network node may be set in one of an active operation mode and a standby operation mode based at least in part on a comparison of a priority with one or more received priorities. The priority may be based on connectivity to an active second network node or links available for selection. The network node may determine that it is isolated from the first network and indicate that isolation in control messages sent to second network nodes.