The Design And Realization Of Equipment Service-Chain In SDN

Nowadays with the rapid development of Internet,traditional deployment way of network can not adapt to the current development of Internet.To build of new IT framework based on cloud computing and SDN technology will become to main architecture of informatization development in the future along with the progress of clouding computing,SDN and NFV technology.In this paper,a new service-chain deployment was realized on the basis of SDN +Overlay network which can allow users to set up a service-chain to make message processed according to the order set by service-chain without changing of physical network structure arrangement,and can realize rapid and accurate business arrangement without modifying of physical network topology.This design primarily realized the design of service-chain module and the realization of software code.At the beginning the modules was divided specifically according to two different process states of users and analyzed their function and realization process respectively.The major part of software lies in realization of message forwarded orderly and processing correspondent business by dividing reserved fields within VXLAN head as unique identifier of service-chain message,and combination with connector encapsulation function to analyze realization of the specific code in detail,including the encapsulation and decapsulation of the data message,drainage of encapsulation message and its processing,ordinary forwarding and fast forwarding service-chain etc.Finally,service-chain test environment was set up on the basis of SDN internet to have a overall test about joint debugging basic function and message,and have a detail analysis of forwarding the encapsulation message and business process procedures.The data indicated that the design realized normal forwarding of message,and regular throughput of message.Therefore,this design achieved expected requirements that can provide a kind of new business arrangement and powerful technical support for business rapid on-line and altering under in new IT network.