Design And Implementation Of CoLoR Based On Segment Routing

With the rapid development of Intenet,the number of users and the scale of network show an explosive growth trends.This leads to the traditional network exposed many problems,such as the poor security,new routing system is difficult to deploy and so on.So the future network architecture and the related key technology research have attracted more and more attention of scholars both at home and abroad.The National 973 Project "Fundamental Research of Smart Collabration Network Theory",which is sponsored by National Engineering Laboratory of Next Generation Internet Interconnection Devices of Beijing Jiaotong University,puts forward the Smart Collaboration Network architecture.CoLoR,a prototype system designed to verify the feasibility of Smart Collaboration Network.CoLoR allows different Autonomous System in a network to run different routing protocols and supports heterogeneous networks.In this paper,the Segment Routing(SR)mechanism and the CoLoR are combined to make the SR support CoLoR,forming the SR-CoLoR domain.The SR-CoLoR domain is an important part of the CoLoR prototype system.Therefore,this work not only makes an important contribution to the construction of the CoLoR prototype system,but also plays an important role in verifying the correctness and usability of the Smart collaboration NETwork system.The main work is as follows:Firstly,this paper introduces the background,significance of the reaserch and related theoretical basis of CoLoR,SR and so on.Secondly,this article analyzes the key components when merges the SR and CoLoR,and then designs the SR-CoLoR system.The SR-CoLoR system is divided into two subsystems:the control plane subsystem and the data plane subsystem.The control plane subsystem is mainly responsible for routing,service analysis and service registration.The data plane subsystem is responsible for the adaptation of SR mechanism and the CoLoR mechanism,the forwarding of the data.This paper designs the modules of each subsystem.Thirdly,this paper implements the network equipment in SR-CoLoR system on Click Router.The control plane subsystem comprises a PCE controller and a Resource Manager(RM).PCE comprises four main modules:a SR-TE path calculation module,a SL optimization module,a SID management module and a SENSE message module.The RM includes service registration,service analysis,CoLoR packet processing module and SR packet processing module.The data plane subsystem includes Border Router(BR),Access Router(AR)and intra-domain SR router.BR comprises packet classification module,CoLoR packet processing module,SR packet processing module,SENSE message processing module,PCEP session processing module,and check update module.Access router includes packet classification module,GET/REG packet processing module,and DATA packet processing module.Finally,the SR-CoLoR system is deployed on the CoLoR prototype system,which is functionally verified and performance tested.Functional verification includes verification of path computation module,service analysis module,border router of data plane subsystem,access router and router in SR domain of control plane subsystem.The performance test includes the CPU utilization of PCE and traffic engineering of the control plane subsystem.This paper veryfies the compatibility of the Smart collaboration NETwork prototype system with the SR,which is conducive to the deployment of CoLoR in the large scale network.