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0引言二十一世纪是信息化的时代,网络作为信息化的主要载体,在各个领域充当着重要角色,各单位与机构纷纷建立自己的网络。由于初期设计的问题,大多数单位建设的网络大多速度为100Mbps,采用二层交换技术。随着网络的不断更新与发展,新的网络应用在不断出现,网络在不断提速,传统的二层交换网络已经难以满足客户日新月异的需求了。传统的二层交换机工作于OSI模型的第二层。当交换机从某个端口收到一个数据帧,它先读取帧头中的源MAC地址,并在
0 Introduction The 21st century is an era of informationization. As a major carrier of informationization, the Internet plays an important role in all fields. All units and agencies have established their own networks. Due to the initial design issues, most of the network construction units to speed 100Mbps, the use of two-tier exchange technology. With the constant update and development of the network, new network applications are constantly emerging and the network is constantly accelerating. The traditional Layer 2 switching network has been difficult to meet the ever-changing needs of customers. Traditional Layer 2 switches work on the second floor of the OSI model. When the switch receives a data frame from a port, it first reads the source MAC address in the frame header and sends