Bandwidth Control with QoS tools Through the Controller (Ryu) and (openflow) Protocol
Keywords:
software defined networks, Openflow protocol, Ryu controller, Quality of service QoSAbstract
The increased traffic on the network and the inability of the traditional networks with their current structure to deal with the fast traffic on the network, led to the emergence of a new dynamic flexible structure programmed according to the behavior of the data flow across the network, this structure is software defined networks SDN, which gives flexibility in controlling network resources by separating the control plane from the data plane. The problem of end to end QUALITY OF SERVICE in traditional networks is an ongoing problem. Many researchers have proposed a set of solutions, but most of them either failed or their solutions were not implemented, and software defined networks came as a solution to reduce the limitations in Current traditional network architectures
SDNs can help provide QoS in a variety of ways due to some of their features such as the concept of per flow control and multi-header fields based routing
In this research, we present two methods of controlling bandwidth using the open flow protocol and the RYU controller, namely the quality of service for each flow (per-flow Qos), which is able to precisely control the quality of service for each flow, but with the increase in the number of flows, this will lead to an increase in the rules or The flow entries in the flow table of the switch that are set to control the bandwidth and thus this method is not scalable and unable to handle with many flows, so the second method was used where the flows are divided into several categories depending on the value (DSCP), (DSCP) is 8 bits In the (ipv4) header within the (type of service TOS) field or within the (traffic class) field in the (ipv6) header, Then queues are allocated by service class that includes a group of flows that have the same required QoS level. And we explain how these methods can control the bandwidth According to the user's need and thus the control of network resources and the optimal use of them.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2022 ttps://creativecommons.org/licenses/by-nc-sa/4.0/
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series
Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series . The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series Publisher
journal uses a CC BY-NC-SA license which mean
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
