网络协议操作目录目录第1章三层管理配置··································································1-11.1三层管理接口································································································1-11.1.1三层管理接口介绍··················································································1-11.1.2三层接口配置任务序列···········································································1-11.2ARP··············································································································1-21.2.1ARP介绍·································································································1-21.2.2ARP配置任务序列···················································································1-21.2.3ARP转发排错帮助···················································································1-2第2章DHCP配置······································································2-12.1DHCP简介····································································································2-12.2DHCP服务器配置·························································································2-22.3DHCP配置举例·····························································································2-42.4DHCP排错帮助·····························································································2-5第3章SNTP配置·······································································3-13.1SNTP简介····································································································3-13.2SNTP典型配置举例······················································································3-21网络协议操作第1章三层管理配置DCS4500-24T交换机只支持二层转发功能。但是可以配置一个三层管理端口，在三层管理端口接口上可以配置IP地址，用于各种基于IP协议的管理协议通讯。1.1三层管理接口1.1.1三层管理接口介绍在DCS4500-24T交换机上只能创建一个管理三层接口。三层接口并不是实际的物理接口，它是一个虚拟的接口。三层接口是在VLAN的基础上创建的。三层接口可以包含一个或多个二层接口（它们同属于一个VLAN），但也可以不包含任何二层接口。三层接口包含的二层接口中，需要至少有一个是UP状态，三层接口才是UP状态，否则为DOWN状态。在三层管理接口上可以配置IP地址，交换机可以通过配置在三层管理接口上的IP地址，与其