DHCP LAB實作

DHCP主機由SW1擔任，而172.16.31.0網段的主機需要透過DHCP Relay來取得IP
SW1#configure t
Enter configuration commands, one per line. End with CNTL/Z.
先設定interface的IP位址
SW1(config)#interface fa1/0
SW1(config-if)#no switchport
SW1(config-if)#ip address 192.168.1.1 255.255.255.252
SW1(config-if)#no shutdown
SW1(config-if)#exit
SW1(config)#interface fa1/1
SW1(config-if)#no switchport
SW1(config-if)#ip address 10.10.10.254 255.255.255.0
SW1(config-if)#no shutdown
SW1(config-if)#exit
SW1(config)#exit


設定RIP路由
SW1(config)#router rip
SW1(config-router)#version 2
SW1(config-router)#network 192.168.1.0
SW1(config-router)#network 10.10.10.0
SW1(config-router)#exit
SW1(config)#exit

設定10.10.10.0網段的DHCP pool
SW1(config)#ip dhcp excluded-address 10.10.10.101 10.10.10.200
SW1(config)#ip dhcp pool 10-net
SW1(dhcp-config)#network 10.10.10.0 255.255.255.0
SW1(dhcp-config)#default-router 10.10.10.254
SW1(dhcp-config)#lease infinite
SW1(dhcp-config)#dns-server 168.95.1.1
SW1(dhcp-config)#end
設定172.16.31.0網段的DHCP pool
SW1#configure t
Enter configuration commands, one per line. End with CNTL/Z.
SW1(config)#ip dhcp excluded-address 172.16.31.101 172.16.31.200
SW1(config)#ip dhcp pool 172-net
SW1(dhcp-config)#network 172.16.31.0 255.255.255.0
SW1(dhcp-config)#default-router 172.16.31.254
SW1(dhcp-config)#dns-server 168.95.1.1
SW1(dhcp-config)#lease infinite
SW1(dhcp-config)#end
SW1#wr

先設定Interface的IP位址
SW2(config)#interface fa1/0
SW2(config-if)#no switchport
SW2(config-if)#ip address 192.168.1.2 255.255.255.252
SW2(config-if)#no shutdown
SW2(config-if)#exit

SW2(config)#interface fa1/1
SW2(config-if)#no switchport
SW2(config-if)#ip address 172.16.31.254 255.255.255.0
SW2(config-if)#ip helper-address 192.168.1.1 (設定DHCP Relay)
SW2(config-if)#no shutdown
SW2(config-if)#exit
設定RIP路由
SW2(config)#router rip
SW2(config-router)#version 2
SW2(config-router)#network 192.168.1.0
SW2(config-router)#network 172.16.31.0
SW2(config-router)#exit
SW2(config)#exit
SW2#wr

檢查DHCP取得IP的狀況
SW1#show ip dhcp binding