公开(公告)号：US09094308B2

公开(公告)日：2015-07-28

申请号：US13840657

申请日：2013-03-15

Applicant: Juniper Networks, Inc.

Inventor： Tirthankar Ghose ,  Harshad Bhaskar Nakil ,  N D Ramesh

IPC: H04L12/26 ,  H04L12/931 ,  H04L12/24

CPC classification number: H04L43/0852 ,  H04L41/12 ,  H04L43/028 ,  H04L43/106 ,  H04L45/586 ,  H04L49/254 ,  H04L49/356 ,  H04L49/70 ,  H04L69/22

Abstract: Techniques are described for determining latency in a physical network that includes a number of network devices over which packets travel. A virtual network controller receives a plurality of messages from a plurality of network devices in a network, each of the messages including a packet signature comprising a hash of an invariant portion of an original packet that uniquely identifies the original packet, an identifier of one of the plurality of network devices from which the respective message was received, and a timestamp indicating a time an original packet was processed by the network device from which the respective message was received. The virtual network controller determines a latency of a physical network path in the network based on analysis of contents of the identified messages having a common packet signature.

Abstract translation: 描述了用于确定物理网络中的延迟的技术，其包括数据包在其上行进的多个网络设备。 虚拟网络控制器从网络中的多个网络设备接收多个消息，每个消息包括包含唯一标识原始分组的原始分组的不变部分的散列的分组签名， 接收相应消息的多个网络设备，以及指示从其接收相应消息的网络设备处理原始分组的时间的时间戳。 虚拟网络控制器基于对具有公共分组签名的所识别的消息的内容的分析来确定网络中的物理网络路径的等待时间。