CCNP(BCMSN)实验：在三层交换机上配置DHCP

CCNP(BCMSN)实验：在三层交换机上配置DHCP

第一步：基本配置

sw1(config)#int f2/1sw1(config-if)#no sh sw1(config-if)#spanning-tree portfast第二步：在sw1上开启DHCP服务。

sw1(config)#service dhcp //在全局下默认是关闭的sw1(config)#no ip dhcp conflict logging //关闭DHCP分配冲突，日志记录消息sw1(config)#ip dhcp pool libo//创建DHCP地址池，名称可是为任意字符sw1(dhcp-config)#network 192.168.0.0 /24//指定要通过dhcp分配的网段和掩码sw1(dhcp-config)#default-router 192.168.0.1//网关地址sw1(dhcp-config)#domain-name cisco.com.cn//dns域名sw1(dhcp-config)#dns-server 218.30.19.40 61.134.1.4//dns域名解析地址sw1(dhcp-config)#lease infinite //租期sw1(dhcp-config)#exisw1(config)#ip dhcp excluded-address 192.168.0.1sw1(config)#ip dhcp excluded-address 192.168.0.10//排除地址

sw1(config)#int vlan 1sw1(config-if)#ip add 192.168.0.1 255.255.255.0sw1(config-if)#no sh第四步：查看当前交换机配置文件

sw1#sh run | b ip dhno ip dhcp conflict loggingip dhcp excluded-address 192.168.0.1ip dhcp excluded-address 192.168.0.10!ip dhcp pool libonetwork 192.168.0.0 255.255.255.0default-router 192.168.0.1 domain-name cisco.com.cndns-server 218.30.19.40 61.134.1.4 lease infinite第五步：查看

当配置了接口的ip 为dhcp获取时

出现R1#Interface Ethernet0/1 assigned DHCP address 192.168.0.2, mask 255.255.255.0R1#sh ip in bInterface IP-Address OK? Method Status ProtocolEthernet0/0 unassigned YES unset administratively down down Ethernet0/1 192.168.0.2 YES DHCP up up Ethernet0/2 unassigned YES unset administratively down down

sw1#sh ip dhcp pool libo

Pool libo :Utilization mark (high/low) : 100 / 0Subnet size (first/next) : 0 / 0 Total addresses : 254Leased addresses : 1Pending event : none1 subnet is currently in the pool :Current index IP address range Leased addresses192.168.0.3 192.168.0.1 - 192.168.0.254 1

sw1#sh ip dhcp bindingBindings from all pools not associated with VRF:IP address Client-ID/ Lease expiration TypeHardware address/User name192.168.0.2 0063.6973.636f.2d63. Infinite Automatic6366.332e.3065.6630.2e30.3030.312d.4574.302f.31

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