基于ENSP跨交换机不同VLAN二层互通仿真实验

Simulation Experiment of Layer 2 Intercommunication between Different VLANs Based on ENSP

VLAN是二层网络中最基础的技术,但VLAN数据传输过程较为抽象,在学习中很难理解透彻。文章设计了跨交换机的两个不同VLAN二层互通实验,在ENSP仿真环境下搭建实验拓扑,分别给出了基于Access、Hybrid和Trunk三种不同类型端口的具体配置过程、配置命令,并对数据流进行抓包分析验证。结果表明,在没有三层路由设备的情况下,只要配置合理,不同VLAN之间也可以实现相互通信,实践证明,学生通过该实验的练习,能够深刻理解VLAN数据传输过程,掌握VLAN技术的灵活运用。

VLAN is the most basic technology in the layer 2 network.But the data transmission of VLAN is too logical and difficult to understand thoroughly for the students in learning.The article designs experiments of layer 2 communication between different VLANs across switches.The ENSP is used as simulation software to build experimental environment and complete configuration process.By giving the specific configuration process and commands based on three different port modes of access,Hybrid and Trunk,and analyzing the data which catching from the interfaces,it's easier to understand for students.Experiments show that,in the absence of layer 3 routing devices,as long as the configuration is reasonable,different VLANs can also communicate with each other.Practice has proved that students can deeply understand the data transmission process of VLAN and master the flexible application of VLAN technology through the practice of this experiment.