公开(公告)号：US10063456B2

公开(公告)日：2018-08-28

申请号：US14262609

申请日：2014-04-25

Applicant: Metaswitch Networks Ltd

Inventor： Casey Davenport ,  Simon Wingrove ,  Alex Pollitt ,  Michael Curtis ,  Shaun Crampton ,  Steve Balls ,  Fiona Corden

IPC: H04L12/751 ,  H04L12/715

CPC classification number: H04L45/02 ,  H04L45/64

Abstract: Measures for processing data in a packet-switched network. A first device is configured to snoop control packets of a predetermined control plane protocol in the network. The predetermined control plane protocol is operated by a plurality of other devices in the network to obtain Layer 2 information on the basis of known Layer 3 information. The first device does not operate the predetermined control plane protocol in the network. At the first device, in response to identifying that a given snooped packet was generated according to the predetermined control plane protocol. Layer 3 information associated with a second device in the plurality is extracted from the given snooped control plane protocol packet on the basis of known Layer 2 information associated with the second device. The second device is connected to the first device.