Patent ID: 9667518
Date: 2017-05-30
CPC Classifications: H04L

Claim:
1. A method implemented in an electronic device coupled to a software-defined networking (SDN) system, wherein the SDN system includes a SDN controller managing a plurality of network devices, the method comprising: upon receiving a first packet of a first network device of the plurality of network devices, recording a first time stamp in a set of ingress time stamps if the first packet includes one indication for delay measurement and if the first network device is an ingress network device of a traffic flow, wherein the first time stamp is to be associated with a flow identifier included in the first packet; upon receiving a second packet of a second network device of the plurality of network devices, recording a second time stamp in a set of egress time stamps if the second packet includes one indication for delay measurement and if the second network device is an egress network device of the traffic flow, wherein the set of egress time stamps is to be associated with the flow identifier, and the set of ingress time stamps; and calculating a delay measure for the traffic flow based on at least the sets of the ingress time stamps and egress time stamps associated with the flow identifier, and a measurement noise the electronic device obtained from sending measurement packets to the first and second network devices.