公开(公告)号：US20150312128A1

公开(公告)日：2015-10-29

申请号：US14262609

申请日：2014-04-25

Applicant: Metaswitch Networks Ltd

Inventor： Casey DAVENPORT ,  Simon WINGROVE ,  Alex POLLITT ,  Spike CURTIS ,  Shaun CRAMPTON ,  Steve BALLS ,  Fiona CORDEN

IPC: H04L12/26 ,  H04L12/751

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.

Abstract translation: 在分组交换网络中处理数据的措施。 第一设备被配置为窥探网络中预定控制平面协议的控制分组。 预定的控制平面协议由网络中的多个其他设备操作以基于已知的第3层信息获得第2层信息。 第一设备不在网络中操作预定的控制平面协议。 在第一设备处，响应于根据预定的控制平面协议识别给定的窥探分组被生成。 基于与第二设备相关联的已知第二层信息，从给定的窥探控制平面协议分组中提取与多个中的第二设备相关联的第3层信息。 第二个设备连接到第一个设备。

公开(公告)号：US20150312129A1

公开(公告)日：2015-10-29

申请号：US14262639

申请日：2014-04-25

Applicant: Metaswitch Networks Ltd

Inventor： Casey DAVENPORT ,  Simon WINGROVE ,  Alex POLLITT ,  Spike CURTIS ,  Shaun CRAMPTON ,  Steve BALLS ,  Fiona CORDEN

IPC: H04L12/26 ,  H04L12/751

CPC classification number: H04L45/02 ,  H04L45/26 ,  H04L45/64

Abstract: Measures for processing data in a packet-switched network. At a first device in the network, an echo request packet is transmitted into the network. The echo request packet comprises a predetermined identifier. An echo response packet is received from a second device in the network. In response to the received echo response packet comprising the predetermined identifier, the received echo response packet is identified as a packet generated on the basis of an echo request packet originated from the first device, and an Internet Protocol (IP) address comprised in the received echo response packet is determined to be an IP address of the second device.

Abstract translation: 在分组交换网络中处理数据的措施。 在网络中的第一设备处，将回波请求分组发送到网络中。 回波请求分组包括预定的标识符。 从网络中的第二设备接收回应响应分组。 响应于包含预定标识符的接收到的回波响应分组，接收到的回波响应分组被识别为基于从第一设备发起的回波请求分组生成的分组，以及包括在接收到的互联网协议（IP）地址 回波响应分组被确定为第二设备的IP地址。

公开(公告)号：US20160127229A1

公开(公告)日：2016-05-05

申请号：US14527575

申请日：2014-10-29

Applicant: Metaswitch Networks Ltd

Inventor： Simon WINGROVE ,  Michael CURTIS ,  Shaun CRAMPTON ,  Alex POLLITT

IPC: H04L12/741

CPC classification number: H04L45/74 ,  H04L45/64

Abstract: Measures, including methods, systems, non-transitory computer-readable storage mediums and computer programs for use in routing packet data. At a network switching device, a data packet is received from a device located upstream of the network switching device. The received data packet comprises routing data associated with a routing decision which has been taken for the data packet upstream of the network switching device. The routing data comprises an abstract media access control (MAC) address corresponding to a next hop destination for the data packet located downstream of the network switching device. At the network switching device, the abstract MAC address in the data packet is replaced with a real MAC address of the next hop downstream destination. At the network switching device, the data packet is forwarded towards the next hop downstream destination.

Abstract translation: 措施，包括方法，系统，非暂时计算机可读存储介质和用于路由分组数据的计算机程序。 在网络交换设备处，从位于网络交换设备上游的设备接收数据分组。 接收到的数据分组包括与网络交换设备上游的数据分组已经采取的路由决定相关联的路由数据。 路由数据包括对应于位于网络交换设备下游的数据分组的下一跳目的地的抽象媒体访问控制（MAC）地址。 在网络交换设备中，数据包中的抽象MAC地址被下一跳下游目的地的真实MAC地址替换。 在网络交换设备处，将数据分组转发到下一跳下游目的地。

公开(公告)号：US20160065482A1

公开(公告)日：2016-03-03

申请号：US14473971

申请日：2014-08-29

Applicant: Metaswitch Networks Ltd

Inventor： Michael CURTIS ,  Alex POLLITT ,  Simon WINGROVE ,  Shaun CRAMPTON

IPC: H04L12/851 ,  H04L12/24 ,  H04L12/26

CPC classification number: H04L47/2483 ,  H04L41/0896 ,  H04L43/026 ,  H04L43/04 ,  Y02D50/30

Abstract: Measures for configuring a network aggregation device in a network. First routing data for a plurality of internet protocol (IP) flows configured on at least one edge device of a service provider network is identified. The edge device is located towards the service provider network from the network aggregation device. At least one utility metric for at least one IP flow in the identified plurality of IP flows is calculated. The at least one utility metric is calculated at least in part on the basis of one or more destination IP addresses associated with the at least one IP flow. A subset of IP flows from the identified plurality of IP flows is selected at least in part on the basis of the calculated at least one utility metric. Second routing data for the selected subset of IP flows is configured on the network aggregation device.

Abstract translation: 网络中配置网络聚合设备的措施。 识别在服务提供商网络的至少一个边缘设备上配置的多个互联网协议（IP）流的第一路由数据。 边缘设备从网络聚合设备定位到服务提供商网络。 计算所识别的多个IP流中的至少一个IP流的至少一个效用度量。 至少部分地基于与所述至少一个IP流相关联的一个或多个目的地IP地址来计算所述至少一个效用度量。 至少部分地基于所计算的至少一个效用度量来选择来自所识别的多个IP流的IP流的子集。 在网络聚合设备上配置所选择的IP流子集的第二路由数据。

公开(公告)号：US20160218964A1

公开(公告)日：2016-07-28

申请号：US14608078

申请日：2015-01-28

Applicant: Metaswitch Networks Ltd

Inventor： Christopher LILJENSTOLPE ,  Simon WINGROVE ,  Michael CURTIS ,  Tom DENHAM ,  Paul TIPLADY ,  Alex POLLITT

IPC: H04L12/721 ,  H04L12/26

CPC classification number: H04L45/14 ,  H04L41/0866 ,  H04L41/0893 ,  H04L45/56

Abstract: Certain examples described herein provide a system and method for validating a routing function for a network device. In one example, a network device has a run-time policy engine, wherein the run-time policy engine implements a routing configuration file and the routing configuration file defines a routing function for network traffic. A file editor is also provided that loads the routing configuration file. The file editor has an editor policy engine that duplicates a functionality of the run-time policy engine. In one example, the routing configuration file has at least one validation portion that has one or more route statements with definitions indicative of expected routing function behavior. The file editor parses the routing configuration file by implementing the routing configuration file using the editor policy engine. The editor policy engine applies the routing function defined by the routing configuration file to the one or more route statements and indicates where a result of the routing function does not conform to the definitions indicative of expected routing function behavior. These examples may help to reduce routing errors due to configuration errors in network devices.

Abstract translation: 本文描述的某些示例提供了用于验证网络设备的路由功能的系统和方法。 在一个示例中，网络设备具有运行时策略引擎，其中运行时策略引擎实现路由配置文件，路由配置文件定义网络流量的路由功能。 还提供了一个加载路由配置文件的文件编辑器。 文件编辑器有一个编辑器策略引擎，它复制运行时策略引擎的功能。 在一个示例中，路由配置文件具有至少一个验证部分，该验证部分具有一个或多个具有指示预期路由功能行为的定义的路由语句。 文件编辑器通过使用编辑器策略引擎实现路由配置文件来解析路由配置文件。 编辑器策略引擎将路由配置文件定义的路由功能应用于一个或多个路由语句，并指示路由功能的结果与指示预期路由功能行为的定义不一致。 这些示例可能有助于减少由于网络设备中的配置错误导致的路由错误。

公开(公告)号：US20150312149A1

公开(公告)日：2015-10-29

申请号：US14262631

申请日：2014-04-25

Applicant: Metaswitch Networks Ltd

Inventor： Casey DAVENPORT ,  Simon WINGROVE ,  Alex POLLITT ,  Spike CURTIS ,  Shaun CRAMPTON ,  Steve BALLS ,  Fiona CORDEN

IPC: H04L12/741 ,  H04L12/751

CPC classification number: H04L45/02 ,  H04L45/42 ,  H04L45/74

Abstract: Measures for processing data in a packet-switched network. At a first device in the network, a packet transmitted from a second device in the network is received. The received packet comprising an Internet Protocol (IP) address for a third device in the network. On the basis of the IP address for the third device comprised in the received data packet, lookup in an IP routing table of the second device is initiated to obtain a next-hop address for the received packet. The obtained next-hop IP address is determined to be an IP address of a device connected to the first device.

Abstract translation: 在分组交换网络中处理数据的措施。 在网络中的第一设备处，从网络中的第二设备发送的分组被接收。 所接收的分组包括网络中第三设备的因特网协议（IP）地址。 基于接收到的数据包中包含的第三设备的IP地址，启动第二设备的IP路由表中的查找以获得接收到的分组的下一跳地址。 获得的下一跳IP地址被确定为连接到第一设备的设备的IP地址。