DHCP配置

TIM截图20181115170902-3.jpg

全局DHCP配置

在R1上面开启dhcp服务，并配置全局dhcp

[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]ip address 192.168.100.1 24
[R1-GigabitEthernet0/0/0]qu 
[R1]interface GigabitEthernet 0/0/1
[R1-GigabitEthernet0/0/1]ip address 192.168.200.1 24
[R1-GigabitEthernet0/0/1]qu
[R1-ip-pool-pool_1]dns-list 192.168.100.2    #客户端自动获取的dns服务器ip
[R1-ip-pool-pool_1]gateway-list 192.168.100.1  #客户端自动获取的网关ip
 [R1-ip-pool-pool_1]lease day 10  #租期10天 
[R1-ip-pool-pool_1]network 192.168.100.1 mask 24   #客户端获取到的ip网段和子网掩码
[R1-ip-pool-pool_1]excluded-ip-address 192.168.100.2  #预留ip
[R1-ip-pool-pool_1]excluded-ip-address 192.168.100.100  192.168.100.150   #预留ip段
[R1-ip-pool-pool_1]qu

[R1]ip pool pool_2
Info: It's successful to create an IP address pool.
[R1-ip-pool-pool_2]network 192.168.200.1 mask 24    
[R1-ip-pool-pool_2]gateway-list 192.168.200.100
[R1-ip-pool-pool_2]dns-list 192.168.200.101
[R1-ip-pool-pool_2]lease day 10 

在接口上面启用全局dhcp

[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]dhcp select global 
[R1]interface GigabitEthernet 0/0/1
[R1-GigabitEthernet0/0/1]dhcp select global 

在PC1上查看开启自动获取ip的客户端

PC>ipconfig

Link local IPv6 address...........: fe80::5689:98ff:fe4f:191b
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.100.254
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.100.1
Physical address..................: 54-89-98-4F-19-1B
DNS server........................: 192.168.100.2

在PC2上查看开启自动获取ip的客户端

PC>ipconfig

Link local IPv6 address...........: fe80::5689:98ff:fea2:458c
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.200.254
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.200.100
Physical address..................: 54-89-98-A2-45-8C
DNS server........................: 192.168.200.101

接口DHCP配置

在R1的G0/0/2接口上开启接口dhcp服务（接口dhcp服务分配的ip网段与接口的ip相同，子网掩码也与接口子网掩码相同）

[R1]interface GigabitEthernet 0/0/2
[R1-GigabitEthernet0/0/2]ip address 192.168.130.1 24
[R1-GigabitEthernet0/0/2]dhcp select interface 
[R1-GigabitEthernet0/0/2]dhcp server excluded-ip-address 192.168.130.18 #保留ip地址
[R1-GigabitEthernet0/0/2]dhcp server excluded-ip-address 192.168.130.20 192.168.130.130 #保留ip地址段
[R1-GigabitEthernet0/0/2]dhcp server dns-list 192.168.130.12 #dns设置
[R1-GigabitEthernet0/0/2]dhcp server lease day 12 #租期12天

查看PC3是否获取到ip地址

Link local IPv6 address...........: fe80::5689:98ff:fe40:312e
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.130.254
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.130.1
Physical address..................: 54-89-98-40-31-2E
DNS server........................: