DHCP server automatically acquires IP address and gateway and DNS
Steps (paste critical code (show running results) and related screenshots for requirements):
1、
RI Configuration:
Router >en
Router#configuration terminal
Router(config)#hostname R1
R2 configuration:
Router >en
Router#configuration terminal
Router(config)#hostname R2
R3 configuration:
Router >en
Router#configuration terminal
Router(config)#hostname R3
2、
R1 configuration:
R1(config)#interface GigabitEthernet 0/0
R1(config-if)#ip address 10.10.1.254 255.192.0.0
R1(config-if)#ip helper-address 20.20.16.253
R1(config)#interface GigabitEthernet 0/1
R1(config-if)#ip address 192.168.1.1 255.255.255.0
R1（config）#ip route 20.20.16.0 255.255.240.0 192.168.1.2
R1 (config)# ip route 30.30.30.28 255.255.255.252 192.168.2.2
R1(config)#ip route 192.168.2.0 255.255.255.0 192.168.1.2
R3 configuration:
R3(config)#interface GigabitEthernet 0/0
R3(config-if)#ip address 192.168.2.2 255.255.255.0
R3(config)#interface GigabitEthernet 0/1
R3(config-if)#ip address 30.30.30.30 255.255.255.252
R3(config-if)#ip helper-address 20.20.16.253
R3(config)#ip route 10.0.0.0 255.192.0.0 192.168.2.1
R3(config)#ip route 192.168.1.0 255.255.255.0 192.168.2.1
R3(config)#ip route 20.20.16.0 255.255.240.0 192.168.2.1
Server configuration:
IP address of 20.20.16.253
255.255.240.0 subnet mask
20.20.16.254 gateway
DHCP address pool configuration:
10.10.10.10/10
10.0.0.0 network address
10.10.1.254 Gateway
7.7.7.7 DNS
255.192.0.0 subnet mask
20.20.20.20/20
20.20.16.0 Web address
20.20.16.254 gateway
255.255.240.0 subnet mask
8.8.8.8 DNS
30.30.30.30/30
30.30.30.28 network address
30.30.30.30 gateway
255.255.255.252 subnet mask
9.9.9.9 DNS
Automatically obtained host IP address:
PC1:10.0.0.1 255.192.0.0 10.10.1.254
PC4:20.20.16.1 255.255.240.0 20.20.16.254
PC5:30.30.30.29 255.255.255.252 30.30.30.30
3.R2 Configuration:
R2(config)#interface GigabitEthernet 0/0
R2(config-if)#ip address 192.168.1.2 255.255.255.0
R2(config)#interface GigabitEthernet 0/1
R2(config-if)#ip address 192.168.2.1 255.255.255.0
R2(config)#interface GigabitEthernet 0/2
R2(config-if)#ip address 20.20.16.254 255.255.240.0
R2(config)#ip route 10.0.0.0 255.192.0.0 192.168.1.1
R2(config)#ip route 30.30.30.28 255.255.255.252 192.168.2.2
Attachment: down.51cto.com/data/2367055
