QOF: QoS Framework Based on OpenFlow

Abstract

The growing emergence of a variety of network applications have stringent Quality of Service (QoS) requirements which cannot be always met by the best-effort Internet. To provide QoS ,several QoS frameworks have been explored over last two decades, but none of them has been truly successful and globally implemented. This paper proposes QOF, a novel QoS framework based on the OpenFlow. It uses the superior control capabilities of OpenFlow network to transmit business having QoS requirements. On receiving QoS requirements of an application, QOF employs network status information provided by the measurement system (bandwidth, delay, packet loss),then uses QoS routing algorithm implemented by path computation module to guarantee QoS. Finally, QOF is simulated and verified, simulation results show that QOF can find a path satisfying QoS requirements of application according to network status information, and can improve resource usage .

Towards distributed emergency flow prioritization in software‐defined networks

“…The network slicing concept introduces the possibility to enable new features such as more fine‐grained Quality‐of‐Service (QoS), and a lot of research is done on SDN over the past few years 13,14 . Different algorithms to provide QoS, but without considering bandwidth guarantees, are presented 15,16 . Yan et al 15 proposed a QoS solution based on SDN technology.…”

“…When a new flow arrives, the path with the lowest cost is selected as the routing path for the flow. Zhang et al 16 proposed a QoS framework based on the OpenFlow protocol which dynamically calculates a path for each flow. If the flow is a QoS‐required flow, an algorithm based on Dijkstra is used to find the path with minimum delay and cost values.…”