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三层交换是基于网络层的交换技术 ,是一种在局域网内部替代传统路由器的理想设备 .文中着重描述了第三层交换式路由技术原理 ,并给出建设骨干网的设计思想 .
Layer 3 switching is based on the exchange of network layer technology, which is an ideal device to replace the traditional router in LAN.This paper mainly describes the principle of Layer 3 switched routing technology and gives the design idea of building backbone network.