《计算机网络》实验指导书：三层交换机DHCP服务器的配置.doc

海量资料 超值下载三层交换机DHCP服务器的配置一、实验目的1.了解DHCP原理2.熟练掌握交换机作为DHCP服务器的配置方法；3.了解该功能的广泛应用；二、实验环境大型网络一般都采用DHCP协议作为地址分配的方法，需要为网络购置多台DHCP服务器放置在网络的不同位置。为减轻网络管理员和用户的配置负担，我们可以将支持DHCP的交换机配置成DHCP服务器。三、实验拓扑四、实验设备1.S3560 1台2.PC 2台3.网线 2根五、实验步骤第1步：创建VLAN加相应端口，并分配地址Switch(config)#vlan 100Switch(config-vlan)#exitSwitch(config)#int range f0/1 - 8Switch(config-if-range)#sw mode accSwitch(config-if-range)#sw acc vlan 100Switch(config-if-range)#exitSwitch(config)#vlan 200Switch(config-vlan)#exitSwitch(config-if-range)#int range f0/9 - 16Switch(config-if-range)#sw mode accSwitch(config-if-range)#sw acc vlan 200第2步：给交换机设置IP地址。Switch(config)#int vlan 100Switch(config-if)#ip add 192.168.100.1 255.255.255.0Switch(config-if)#no shSwitch(config)#exitSwitch(config-if)#int vlan 200Switch(config-if)#ip add 192.168.200.1 255.255.255.0Switch(config-if)#no sh第3步：配置DHCPSwitch(config)#ip dhcp pool jsj100定义地址池Switch(dhcp-config)#network 192.168.100.0 255.255.255.0Switch(dhcp-config)#default-router 192.168.100.1Switch(dhcp-config)#dns-server 192.168.1.1Switch(dhcp-config)#exitSwitch(config)#ip dhcp pool jsj200Switch(dhcp-config)#net 192.168.200.0 255.255.255.0Switch(dhcp-config)#default-router 192.168.200.1Switch(dhcp-config)#dns-server 192.168.1.1Switch(dhcp-config)#exit第4步：验证实验在PC机上选择DHCP地址，通过自动获取得到PC1ipconfig /allPhysical Address.: 0001.C944.4DD3IP Address.: 192.168.100.2Subnet Mask.: 255.255.255.0Default Gateway.: 192.168.100.1DNS Servers.: 192.168.1.1PC2ipconfig /allPhysical Address.: 0050.0F45.35D6IP Address.: 192.168.200.2Subnet Mask.: 255.255.255.0Default Gateway.: 192.168.200.1DNS Servers.: 192.168.1.1第5步：测试连通性PC1 ping PC2结果如下：PCping 192.168.200.2Pinging 192.168.200.2 with 32 bytes of data:Reply from 192.168.200.2: bytes=32 time=16ms TTL=128Reply from 192.168.200.2: bytes=32 time=15ms TTL=128Reply from 192.168.200.2: bytes=32 time=16ms TTL=128Reply from 192.168.200.2: bytes=32 time=0ms TTL=128Ping statistics for 192.168.200.2: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 16ms, Average = 11ms六、注意事项DHCP客户机连接在交换机上，获不到IP地址。遇到这种情况检测DHCP Server内是否有与交换机VLAN接口在一个网段的地址池，如没有则添加地址池七、参考配置Switch#sh runBuilding configuration.Current configuration : 2243 bytes!version 12.2no service password-encryption!hostname Switch!ip ssh version 1!port-channel load-balance src-mac!interface FastEthernet0/1 switchport access vlan 100 switchport mode access!interface FastEthernet0/2 switchport access vlan 100 switchport mode access!interface FastEthernet0/3 switchport access vlan 100 switchport mode access!interface FastEthernet0/4 switchport access vlan 100 switchport mode access!interface FastEthernet0/5 switchport access vlan 100 switchport mode access!interface FastEthernet0/6 switchport access vlan 100 switchport mode access!interface FastEthernet0/7 switchport access vlan 100 switchport mode access!interface FastEthernet0/8 switchport access vlan 100 switchport mode access!interface FastEthernet0/9 switchport access vlan 200 switchport mode access!interface FastEthernet0/10 switchport access vlan 200 switchport mode access!interface FastEthernet0/11 switchport access vlan 200 switchport mode access!interface FastEthernet0/12 switchport access vlan 200 switchport mode access!interface FastEthernet0/13 switchport access vlan 200 switchport mode access!interface FastEthernet0/14 switchport access vlan 200 switchport mode access!interface FastEthernet0/15 switchport access vlan 200 switchport mode access!interface FastEthernet0/16 switchport access vlan 200 switchport mode access!interface FastEthernet0/17!interface FastEthernet0/18!interface FastEthernet0/19!interface FastEthernet0/20!interface FastEthernet0/21!interface FastEthernet0/22!interface FastEthernet0/23!interface FastEthernet0/24!interface GigabitEthernet0/1!interface GigabitEthernet0/2!interface Vlan1 no ip address shutdown!interface Vlan100 ip address 192.168.100.1 255.255.255.0!interface Vlan200 ip address 192.168.200.1 255.255.255.0!ip classless!ip dhcp excluded-address 192.168.100.70 192.168.100.80!ip dhcp pool jsj100 network 192.168.100.0 255.255.