Open AccessImplementation of traffic splitting using meter table in software‐defined networking
Author(s) -
Kitsuwan Nattapong,
Oki Eiji
Publication year - 2017
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2016.0217
Subject(s) - openflow , quality of service , network packet , header , computer network , computer science , software , differentiated services , software defined networking , table (database) , operating system , data mining
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.