Methods and network nodes for traffic steering based on per-flow policies

摘要

A method for redirecting a traffic flow in a communication network, in which a first or default service path has been configured for the traffic flow to go through is disclosed. The method comprises: receiving a notification message from a network node, the notification message including a traffic characteristic information of a packet of the traffic flow; creating a set of rules based on the received traffic characteristic information; and sending the set of rules to a plurality of switches in the communication network, the set of rules configuring a second or alternative service path to be used by subsequent packets of this traffic flow. Also, a network node for carrying out this method is provided.

主权项

1. A method for redirecting a traffic flow of an end-user in a communication network, in which a first service chain has been configured for the traffic flow to go through, the method comprising:
receiving a message from a service network node, the message including a traffic characteristic information of at least a first packet of the traffic flow of the end-user; in response to receiving the message, creating a set of rules based on the received traffic characteristic information of the at least first packet of the traffic flow; and sending the set of rules to a plurality of switches in the communication network, the set of rules indicating a second service chain for subsequent packets of the traffic flow to traverse while the at least first packet of the traffic flow traverses the first service chain, the second service chain comprising an ordered set of services provided by a plurality of service network nodes and the second service chain being different from the first service chain.