Cisco：DHCP实现自动获取IP地址
局域网网络协议，用于管理和分配IP地址，使用UDP协议工作，常用的端口是67（server），68（client）
Cisco：DHCP实现自动获取IP地址一：SW0，sw1二层交换机的配置SW0SW1三层交换机路由器服务器总结
拓扑图：
一：SW0，sw1二层交换机的配置
1：为sw0，sw1划分vlan，sw0为vlan10，sw1为vlan20.
SW0
Switch>enSwitch#config terminalEnter configuration commands, one per line. End with CNTL/Z.SW0(config)#vlan 10 SW0(config-vlan)#interface vlan 10SW0(config-if)#%LINK-5-CHANGED: Interface Vlan10, changed state to upSW0(config)#interface f0/1SW0(config-if)#switchport mode access SW0(config-if)#switchport access vlan 10SW0(config-if)#interface g0/1SW0(config-if)#switchport mode trunk SW0(config-if)#switchport trunk allowed vlan 10,20SW0(config-if)#exit
SW1
Switch>enSwitch#config terminalEnter configuration commands, one per line. End with CNTL/Z.SW1(config)#vlan 20SW1(config-vlan)#interface vlan 20SW1(config-if)#%LINK-5-CHANGED: Interface Vlan10, changed state to upSW1(config)#interface f0/1SW1(config-if)#switchport mode access SW1(config-if)#switchport access vlan 20SW1(config-if)#interface f0/2SW1(config-if)#switchport mode trunk SW1(config-if)#switchport trunk allowed vlan 10,20SW1(config-if)#exit
三层交换机
//进入特权模式Switch(config)#vlan 10Switch(config-vlan)#interface vlan 10Switch(config-if)#ip address 192.168.1.1 255.255.255.0Switch(config-if)#exitSwitch(config)#vlan 20Switch(config-vlan)#interface vlan 20Switch(config-if)#ip address 192.168.2.1 255.255.255.0Switch(config)#interface g0/1Switch(config-if)#no shutdownSwitch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan 10,20Switch(config-if)#switchport trunk encapsulation dot1q Switch(config-if)#no shutdown Switch(config-if)#interface f0/2Switch(config-if)#switchport mode trunk Switch(config-if)#switchport trunk allowed vlan 10,20Switch(config-if)#switchport trunk encapsulation dot1q Switch(config-if)#no shutdown Switch(config)#ip routing //开启路由功能Switch(config)#ip dhcp pool wsy //地址池为wsySwitch(dhcp-config)#network 192.168.10.0 255.255.255.0 //宣告网络Switch(dhcp-config)#default-router 192.168.10.2 //设置默认路由Switch(dhcp-config)#dns-server 8.8.8.8 //设置一个dns服务IPSwitch(dhcp-config)#exit Switch(config)#ip route 192.168.10.0 255.255.255.0 192.168.20.2 //下一跳就去服务器
路由器
Router>enRouter#configure terminal Router(config)#interface gigabitEthernet 0/0/0 Router(config-if)#ip address 192.168.20.2 255.255.255.0Router(config-if)#no shutdown Router(config-if)#interface g0/0/1Router(config-if)#ip address 192.168.10.2 255.255.255.0Router(config-if)#no shutdown Router(config)#ip route 192.168.1.0 255.255.255.0 192.168.20.1Router(config)#ip route 192.168.2.0 255.255.255.0 192.168.20.1
服务器
为服务器配置好DHCP
