Research Of MPLS Service Chain Deployment And Routing Algorithm For SDN

With the extremely expanding of web-scale and the rapid development of new network services,the disadvantages of traditional networks exposed relentlessly,such as:hard to deal with the demand,difficult to guarantee the services,too complex configuration managements.Software Defined Network(SDN)has emerged as a new architecture of network system innovation.It has received great attention from academia and industrie by the separation of data,control panel,open network equipment programming capabilities and the ability to monitor the entire web.Affected by the new SDN architecture,deployment service chain accretion too much flow table to interchanger based on quintuple information(source IP,destination IP,source port,destination port,protocol type)which has aggravated the burden of SDN data.At the same time,the deployment plan still has the problems of poor flexibility,slow forwarding,failure detection and long recovery cycle.For above problems,this paper proposes the Ant colony routing algorithm based on the deployment of MPLS(Multi-Protocol Label Switching)and QoS(Quality of Service).Using MPLS deployment service chain not only can reduce the number of flow tables but also can reduce the burden of SDN data panel.Furthermore,it can locate and recover the fault a short time which enhance the flexibility and extensibility of deployment service chain.By the way,the improved ant colony algorithm has selected the most optimized service chain,which has realized faster and efficient forwarding of service chain network flow.So,this paper will under the ubuntu operating system to implement the deployment service chain on account of the MPLS label by means of deriveing the network suboptimum tool and the RYU controller of SDN,the wireshark capture package to verify the success of the deployment service chain.Meanwhile,this paper will make the comparision of experiment result between QoS ant colony routing algorithm and the traditional ant colony algorithm,as well as the Dijkstra algorithm.The comparision mainly focus on the amount of flow table of switchers,the jitter and latency time in the process of transiton.The experiment shows that the QoS ant colony routing algorithm based on SDN MPLS service chain has a significant improvement on the original technology.