公开(公告)号：US20170302623A1

公开(公告)日：2017-10-19

申请号：US15513222

申请日：2014-09-23

申请人： NEC Europe Ltd.

发明人： Roberto BIFULCO ,  Anton MATSIUK

IPC分类号： H04L29/12 ,  H04L12/851

CPC分类号： H04L61/35 ,  H04L41/0266 ,  H04L45/30 ,  H04L45/64 ,  H04L47/2441

摘要： A method for operating a network includes implementing at least one service function chain (SFC) including several service functions (SFs) for providing traffic steering; encoding traffic steering information related to the at least one SFC; and using redundant information in an addressing scheme of network hosts for addressing the SFs.

公开(公告)号：US20170142212A1

公开(公告)日：2017-05-18

申请号：US15320789

申请日：2014-06-26

申请人： NEC Europe Ltd.

发明人： Roberto BIFULCO

IPC分类号： H04L29/08 ,  H04L12/26 ,  H04L12/24

CPC分类号： H04L67/24 ,  H04L41/12 ,  H04L43/0811 ,  H04L43/10

摘要： A method for monitoring a status in a form of presence and/or absence of a subscribed network entity in a network by a presence service, wherein the network is a software defined network having one or more forwarding elements being configurable for recognizing and applying one or more actions on packets being forwarded by the forwarding elements and one or more network entities, includes monitoring the status of the subscribed network entity. The monitoring the status of the subscribed network entity includes providing the presence service with a status update of the selected network entity only when at least one of the one or more forwarding elements, to which the selected network entity is directly connected, has detected a change in the presence status of the subscribed network entity; and dropping packets of the subscribed network entity destined for the presence service.

公开(公告)号：US20160020998A1

公开(公告)日：2016-01-21

申请号：US14772790

申请日：2013-03-12

申请人： NEC EUROPE LTD.

发明人： Roberto BIFULCO ,  Thomas Dietz ,  Stavros Konstantaras

IPC分类号： H04L12/721 ,  H04L12/803 ,  H04L12/833

CPC分类号： H04L45/38 ,  H04L45/60 ,  H04L45/64 ,  H04L47/122 ,  H04L47/31

摘要： A packet data network includes a flow-based programmable network device. The flow-based programmable network device includes a data plane having a plurality of input and output ports, a control interface and forwarding rules that map packets received on one of the input ports to one of the output ports based on a packet matching a rule in the forwarding rules. A controller entity is configured to program the flow-based programmable network device via the control interface. The flow-based programmable network device has a connection via the data plane to at least one delegated entity which is a network device configured to process network traffic on behalf of the flow-based programmable network device in a transparent manner from a perspective of the controller entity.

摘要翻译： 分组数据网络包括基于流的可编程网络设备。 基于流程的可编程网络设备包括具有多个输入和输出端口的数据平面，控制接口和转发规则，其将在一个输入端口上接收的分组映射到输出端口之一，基于与 转发规则。 控制器实体被配置为经由控制接口对基于流的可编程网络设备进行编程。 基于流的可编程网络设备具有经由数据平面的至少一个委托实体的连接，所述至少一个委托实体是被配置为从控制器的角度以透明的方式代表基于流的可编程网络设备处理网络流量的网络设备 实体。