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access icon openaccess Implementation of traffic splitting using meter table in software-defined networking

This is an open access article published by the IET under the Creative Commons Attribution -NonCommercial License (http://creativecommons.org/licenses/by-nc/3.0/)
Received 20/07/2016, Accepted 14/09/2016, Published 30/09/2016

An implementation technique for traffic splitting using a meter table of a standard OpenFlow in a software-defined network is proposed. The proposed technique uses different differentiated services code point (DSCP) numbers, which are generally used to classify network traffic for quality of service (QoS) levels, in a packet header to decide an output port for a corresponding route. The meter table is generally designed for a QoS purpose. The OpenFlow standard provides two types of meter band, ‘drop’ and ‘dscp_remark’. The proposed technique adopts the ‘dscp_remark’ type for a splitting traffic purpose, instead of the QoS purpose. The DSCP number of the packet is modified when the packet rate exceeds a pre-defined traffic rate. Packets with different DSCP numbers are sent out to the neighbour switches from their corresponding output ports. The original DSCP number is returned to the packets when they are sending out to the neighbour switches, so that the QoS is not affected.

Inspec keywords: quality of service; DiffServ networks; software defined networking; telecommunication traffic

Other keywords: differentiated services code point numbers; traffic splitting; QoS; network traffic classification; standard OpenFlow; packet header; meter table; quality of service; DSCP number; software-defined networking

Subjects: Computer communications; Computer networks and techniques

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http://iet.metastore.ingenta.com/content/journals/10.1049/joe.2016.0217
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