一、拓扑图
网络拓扑需包含以下元素：
- PC1（DHCP客户端）
- 路由器（含DHCP服务功能）
- 连接线路（确保接口对应关系正确）
二、基础配置
PC1配置 启用DHCP获取IP地址：
路由器配置
配置路由器接口IP并启用DHCP：
<Huawei>sys
Enter system view, return user view with Ctrl+Z.
Huawei\]un \[Huawei\]undo inf \[Huawei\]undo info-center e \[Huawei\]undo info-center enable Info: Information center is disabled. \[Huawei\]sysna \[Huawei\]sysname \^ Error:Incomplete command found at '\^' position. \[Huawei
Huawei\]sysname Router 
配置路由器接口的ip
Router\]int g 0/0/0 \[Router-GigabitEthernet0/0/0\]ip a \[Router-GigabitEthernet0/0/0\]ip add \[Router-GigabitEthernet0/0/0\]ip address 10.1.1.1 24 \[Router-GigabitEthernet0/0/0\]
三、DHCP配置
方式一接口配置：
Router\]dhcp enable Info: The operation may take a few seconds. Please wait for a moment.done. \[Router\]int g0/0/0 \[Router-GigabitEthernet0/0/0\]dh \[Router-GigabitEthernet0/0/0\]dhcp s \[Router-GigabitEthernet0/0/0\]dhcp select in \[Router-GigabitEthernet0/0/0\]dhcp select interface \[Router-GigabitEthernet0/0/0\]d \[Router-GigabitEthernet0/0/0\]dh \[Router-GigabitEthernet0/0/0\]dhcp server \[Router-GigabitEthernet0/0/0\]dhcp server dns \[Router-GigabitEthernet0/0/0\]dhcp server dns-list 10.1.1.2 \[Router-GigabitEthernet0/0/0\]d \[Router-GigabitEthernet0/0/0\]dh \[Router-GigabitEthernet0/0/0\]dhcp se \[Router-GigabitEthernet0/0/0\]dhcp ser \[Router-GigabitEthernet0/0/0\]dhcp server ex \[Router-GigabitEthernet0/0/0\]dhcp server excluded-ip-address 10.1.1.2 \[Router-GigabitEthernet0/0/0\]d \[Router-GigabitEthernet0/0/0\]hc \[Router-GigabitEthernet0/0/0\]dhc \[Router-GigabitEthernet0/0/0\]dhcp se \[Router-GigabitEthernet0/0/0\]dhcp ser \[Router-GigabitEthernet0/0/0\]dhcp server lease day 3 \[Router-GigabitEthernet0/0/0\]q 
验证：
在PC端执行ipconfig，应获取到类似10.1.1.x的地址（排除预留的254）。
Invalid command!
PC>ipconfig
Link local IPv6 address...........: fe80::5689:98ff:fece:303f
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 10.1.1.254
Subnet mask.......................: 255.255.255.0
Gateway...........................: 10.1.1.1
Physical address..................: 54-89-98-CE-30-3F
DNS server........................:
PC>ping 10.1.1.1
Ping 10.1.1.1: 32 data bytes, Press Ctrl_C to break
From 10.1.1.1: bytes=32 seq=1 ttl=255 time=94 ms
From 10.1.1.1: bytes=32 seq=2 ttl=255 time=62 ms
From 10.1.1.1: bytes=32 seq=3 ttl=255 time=47 ms
From 10.1.1.1: bytes=32 seq=4 ttl=255 time=32 ms
From 10.1.1.1: bytes=32 seq=5 ttl=255 time=31 ms
--- 10.1.1.1 ping statistics ---
5 packet(s) transmitted
5 packet(s) received
0.00% packet loss
round-trip min/avg/max = 31/53/94 ms
分到的是10.1.1.254，华为模拟器默认的是先用大的但是255是全1特殊地址
连通性也没有问题的
方式二全局配置：
清除原有接口配置
Router-GigabitEthernet0/0/0\]undo dhcp select in \[Router-GigabitEthernet0/0/0\]undo dhcp select interface Warning: There are IP addresses allocated in the pool. Are you sure to delete th e pool?\[Y/N\]:Y
验证：
pc的dhcp关闭再打开
PC>ipconfig
Link local IPv6 address...........: fe80::5689:98ff:fece:303f
IPv6 address......................: :: / 128
IPv6 gateway......................: ::
IPv4 address......................: 0.0.0.0
Subnet mask.......................: 0.0.0.0
Gateway...........................: 0.0.0.0
Physical address..................: 54-89-98-CE-30-3F
DNS server........................: 10.1.1.2
PC>
配置全局：
Router\]ip pool a \[Router-ip-pool-a\]network 10.1.1.0 m \[Router-ip-pool-a\]network 10.1.1.0 mask 4 Error:Invalid subnet mask. \[Router-ip-pool-a\]network 10.1.1.0 mask 24 \[Router-ip-pool-a\]int g0/0/0 \[Router-GigabitEthernet0/0/0\]dhcp select global \[Router-GigabitEthernet0/0/0\] PC\>ipconfig Link local IPv6 address...........: fe80::5689:98ff:fece:303f IPv6 address......................: :: / 128 IPv6 gateway......................: :: IPv4 address......................: 10.1.1.254 Subnet mask.......................: 255.255.255.0 Gateway...........................: 0.0.0.0 Physical address..................: 54-89-98-CE-30-3F DNS server........................: 10.1.1.2 PC\>