虚拟局域网技术在企业中的应用

The Application of Virtual Lan in Enterprises

在企业中,很多部门的员工并不是集中办公,他们分布在不同的楼层或地域,做为网络用户,他们需要集中管理;也有很多部门在网络上需要越来越高的安全性,不能和其他的部门混用同一个以太网段,以防止数据窃听。这些新问题需要更灵活地配置局域网,虚拟局域网技术解决了这个问题,用户不受地理位置的限制,在逻辑上组成新的局域网,缩小了广播域,提高了网络安全性。

Usually, enterprise employees of different sectors are not centralized when they work. They are scattered in different floors or regions. As network users, they need to be centrally managed; Many sectors demand for high network security to prevent data from being eavesdropped. They can not share one same Ethernet with other sectors. These new issues need for more flexible allocation of LAN. Virtual LAN technology can solve the problem. The VLAN users are not limited by geographical position. They logically form a new LAN, which narrows the broadcast domain, enhances network security.