Design And Implementation Of L3VPN For 5G

So far,the fourth generation of mobile communication 4G has basically met most of the communication and entertainment needs of users.In the future,with the rise of the Internet of Things,mobile communication technology will become the foundation of the Internet of Everything.In order to meet the explosive growth of mobile data traffic,massive device connections,and various emerging new services and application scenarios,the fifth generation of mobile Communication 5G came into being.Compared to 4G mobile communication technology,which focuses on single-point technological breakthroughs,5G mobile communication not only focuses on providing users with greater bandwidth,lower latency,higher reliability,intelligent,flexible,and efficient opening of mobile communication networks,and more attention to multiple technologies Deep integration and innovation of network architecture.At present,with the comprehensive commercialization of 5G communications in China,major operators have proposed solutions for 5G,and based on this equipment manufacturers have launched 5G-enabled PTN equipment.Based on the new slicing packet network SPN transmission network system proposed by China Mobile,this paper proposes a design model of L3 VPN technology for setting up customer dedicated line services at the slicing packet layer.It focuses on the principle of L3 VPN implementation at the service-forwarding level and key technologies in L3 VPN.The main research contents of this paper are as follows:(1)Introduce the development trend of 5G communication at home and abroad,analyze the business requirements and technical requirements of 5G communication,and the technical challenges faced by 5G communication.Analyze the 5G communication network architecture and the new SPN transmission architecture,and explain the significance of this paper.(2)Introduce the segmented routing technology SR technology used in the SPN architecture.This technology is a source routing mechanism that inherits the data forwarding method of MPLS technology and optimizes it on the control plane.IGP is used to replace RSVP / LDP for label distribution,and IGP FRR is used to achieve reliable protection between nodes,Supports binding labels,which can well support interworking of heterogeneous networks.Combining SR technology with SDN controller can support static or dynamic configuration of services,while ensuring non-disruptive services.(3)Based on a PTN equipment supporting 5G,design an L3 VPN technology model for establishing a virtual private network.According to functions,it is divided into user-orientedinterface processing,network-side interface processing,tunnel processing,and MAC learning.From the service-forwarding level,it explains the process of establishing L3 VPN services with APIs,and analyzes the packet forwarding process.At the same time,it analyzes the implementation of the combination of SR technology and L3 VPN technology.(4)Use the above PTN equipment to set up a simulation environment.Verify the implementability of L3 VPN forwarding model and L3 VPN over SR model.