Research On Physical Topology Analysis Technology For Virtual Nodes Of Data Center

With the rapid development of cloud architecture and virtualization technologies,server virtualization technology has begun to penetrate into all aspects of people's lives,and applications of data centers have become increasingly widespread.The data center stores a large number of server groups.Each physical server virtualizes multiple logical servers internally.Besides,Each virtual server is configured with an IP address and a MAC address.Therefore,from the perspective of managers,the physical structure of the data center network is no longer clear,and the supervision of network security also loses specific means of identification.In the network supervision system,after the virtual system is set up,how to monitor the virtual nodes in the network in real time and dynamically sense the real-time changes of the network topology,especially the correct perception of the topology of the virtual nodes and physical nodes,have become important issues for data center's network manager.This paper starts from the basic composition of network environment of current data center,and deeply studies the condition monitoring technology and physical topology analysis technology of virtual nodes.The paper clearly points out the actual requirements of the new generation network monitoring platform.It not only needs to dynamically monitor and analyze the topology of the physical device nodes in the network,but also pays attention to the topology analysis of the physical aggregation connection of the virtual nodes.Based on Simple Network Management Protocol(SNMP),this paper focuses on analyzing the physical topology analysis technology of virtual nodes in data centers.It mainly includes the optimization of network node identity uniqueness recognition algorithm and the "Iris" recognition algorithm based on virtual node MAC address.A physical topology discovery algorithm for virtual nodes based on network layer is proposed,a virtual node physical topology discovery algorithm based on data link layer is proposed,and a method for monitoring working status of virtual nodes,a method for identifying violation behaviors,and a recursive query strategy for virtual nodes are studied.In this paper,the logical identification of virtual nodes is converged to the actual physical connection through the above algorithmsand technologies,thus forming a real and complete data center network topology.Finally,according to the actual functional requirements of the system,various modules of the system are studied and designed..On this basis,this paper focuses on the robustness,cross-platform and high efficiency of the system,develops a physical topology analysis system for virtual nodes of the data center,and tests the system's function and performance in a real environment.Multiple test results show that the system can obtain virtual node status information in time and analyze the topological connection relationship between the virtual node and the physical node,thus perfecting the data center network topology and ensuring the overall security of the network boundary.