（1）DHCP接口地址池配置
dhcp enable
interface GigabitEthernet0/0/0
ip address 192.168.1.1 255.255.255.0
dhcp select interface
dhcp server excluded-ip-address 192.168.1.2 192.168.1.10
dhcp server lease day 5 hour 0 minute 0
dhcp server dns-list 4.4.4.4
PC1可以获得ip地址及DNS地址
PC>ipconfig
Link local IPv6 address...........: fe80::5689:98ff:fe95:958
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.1.254
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.1.1
Physical address..................: 54-89-98-95-09-58
DNS server........................: 4.4.4.4
[DHCP]dis ip pool
-----------------------------------------------------------------
Pool-name : GigabitEthernet0/0/0
Pool-No : 0
Position : Interface Status : Unlocked
Gateway-0 : 192.168.1.1
Mask : 255.255.255.0
VPN instance : --
IP address Statistic
Total :253
Used :1 Idle :243
Expired :0 Conflict :0 Disable :9
（2）DHCP全局地址池配置
[DHCP]dhcp enable
Info: The operation may take a few seconds. Please wait for a moment.done.
[DHCP]ip pool R1
Info: It's successful to create an IP address pool.
[DHCP-ip-pool-R1]network 192.168.2.0 mask 24
[DHCP-ip-pool-R1]gateway-list 192.168.2.1
[DHCP-ip-pool-R1]dns-list 8.8.8.8
[DHCP-ip-pool-R1]excluded-ip-address 192.168.2.2 192.168.2.10
[DHCP-ip-pool-R1]lease day 10
[DHCP-ip-pool-R1]q
[DHCP]int g0/0/0
[DHCP-GigabitEthernet0/0/0]ip add 192.168.2.1 24
[DHCP-GigabitEthernet0/0/0]dhcp select global
PC>ipconfig
Link local IPv6 address...........: fe80::5689:98ff:fe95:958
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.2.254
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.2.1
Physical address..................: 54-89-98-95-09-58
DNS server........................: 8.8.8.8
[DHCP]dis ip pool
-----------------------------------------------------------------
Pool-name : R1
Pool-No : 0
Position : Local Status : Unlocked
Gateway-0 : 192.168.2.1
Mask : 255.255.255.0
VPN instance : --
IP address Statistic
Total :253
Used :1 Idle :243
Expired :0 Conflict :0 Disable :9
（3）DHCP中继代理配置
vlan及端口配置
[SW1]vlan batch 2 3
[SW1-vlan3]int g0/0/2
[SW1-GigabitEthernet0/0/2]port link-type access
[SW1-GigabitEthernet0/0/2]port default vlan 2
[SW1-GigabitEthernet0/0/2]int g0/0/3
[SW1-GigabitEthernet0/0/3]port link-type access
[SW1-GigabitEthernet0/0/3]port default vlan 3
[SW1-GigabitEthernet0/0/3]q
[SW1]int Vlanif 1
[SW1-Vlanif1]ip add 12.1.1.1 24
[SW1-Vlanif1]int Vlanif 2
[SW1-Vlanif2]ip add 192.168.2.1 24
[SW1-Vlanif2]int Vlanif 3
[SW1-Vlanif3]ip add 192.168.3.1 24
[AR2]int g0/0/0
[AR2-GigabitEthernet0/0/0]ip add 12.1.1.2 24
路由配置（如没有路由，不同网段间无法通信）
[SW1]ospf
[SW1-ospf-1]area 0
[SW1-ospf-1-area-0.0.0.0]net 12.1.1.0 0.0.0.255
[SW1-ospf-1-area-0.0.0.0]net 192.168.2.0 0.0.0.255
[SW1-ospf-1-area-0.0.0.0]net 192.168.3.0 0.0.0.255
[AR2]ospf
[AR2-ospf-1]area 0
[AR2-ospf-1-area-0.0.0.0]net 12.1.1.0 0.0.0.255
全局地址池配置
[AR2]dhcp enable
[AR2]ip pool vlan2
Info: It's successful to create an IP address pool.
[AR2-ip-pool-vlan2]network 192.168.2.0 mask 24
[AR2-ip-pool-vlan2]gateway-list 192.168.2.1
[AR2-ip-pool-vlan2]dns-list 4.4.4.4
[AR2-ip-pool-vlan2]lease day 5
[AR2-ip-pool-vlan2]q
[AR2]ip pool vlan3
Info: It's successful to create an IP address pool.
[AR2-ip-pool-vlan3]network 192.168.3.0 mask 24
[AR2-ip-pool-vlan3]gateway-list 192.168.3.1
[AR2-ip-pool-vlan3]dns-list 8.8.8.8
[AR2-ip-pool-vlan3]lease day 10
[AR2-ip-pool-vlan3]q
[AR2]int g0/0/0
[AR2-GigabitEthernet0/0/0]dhcp select global
DHCP中继代理配置
[SW1]dhcp enable
Info: The operation may take a few seconds. Please wait for a moment.done.
[SW1]int Vlanif 2
[SW1-Vlanif2]dhcp select relay
[SW1-Vlanif2]dhcp relay server-ip 12.1.1.2
[SW1-Vlanif2]int vlanif 3
[SW1-Vlanif3]dhcp select relay
[SW1-Vlanif3]dhcp relay server-ip 12.1.1.2
PC1：
PC>ipconfig
Link local IPv6 address...........: fe80::5689:98ff:fe01:6cba
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.2.254
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.2.1
Physical address..................: 54-89-98-01-6C-BA
DNS server........................: 4.4.4.4
PC2：
PC>ipconfig
Link local IPv6 address...........: fe80::5689:98ff:fe45:32ba
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 192.168.3.254
Subnet mask.......................: 255.255.255.0
Gateway...........................: 192.168.3.1
Physical address..................: 54-89-98-45-32-BA
DNS server........................: 8.8.8.8
PC1能ping通PC2
PC>ping 192.168.3.254
Ping 192.168.3.254: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 192.168.3.254: bytes=32 seq=2 ttl=127 time=47 ms
From 192.168.3.254: bytes=32 seq=3 ttl=127 time=31 ms
From 192.168.3.254: bytes=32 seq=4 ttl=127 time=16 ms
From 192.168.3.254: bytes=32 seq=5 ttl=127 time=46 ms
--- 192.168.3.254 ping statistics ---
5 packet(s) transmitted
4 packet(s) received
20.00% packet loss
round-trip min/avg/max = 0/35/47 ms