DHCP configuration (take Huawei ENSP as an example)

If there is a mistake , Please kindly understanding ！

This article is only for my study notes , For reference only , If offended , Please contact the author for deletion ！！！

Introduction to basic knowledge ：

⽹ Networking steps ：

    1、 Topology design

    2、IP Address planning -- According to ⽹ The range of the network , planning ⽹ Different collateral positions IP Address

    3、 To configure

        1） Configure the configuration of each node IP Address

        2） route -- whole ⽹ Can be up to

        3） test --ping

        4） Strategy

        5） Optimize Security

        6） misarrangement

    4、 Maintenance and upgrades  

Become dhcp Server conditions :

    1. There must be real physics ⽹ Card or connection ⼴ The real physical connection of the broadcast domain ⼝

    2. There must be legal ip Address

  Topology ：

Set user name and login password ：

[Huawei]aaa
[Huawei-aaa]local-user admin privilege level 15 password cipher admin
[Huawei-aaa]local-user admin service-type terminal
[Huawei-aaa]local-user guest privilege level 0 password cipher guest
Info: Add a new user.
[Huawei-aaa]local-user guest service-type terminal

[Huawei]user-interface console 0
[Huawei-ui-console0]authentication-mode aaa

Start configuring ports ：

Interface g0/0/0/ IP： 

[Huawei]interface g0/0/0	
[Huawei-GigabitEthernet0/0/0]ip address 192.168.1.1 24


[Huawei]dhcp enable
[Huawei]interface g0/0/0
[Huawei-GigabitEthernet0/0/0]ip pool 01
Info: It's successful to create an IP address pool.
[Huawei-ip-pool-01]network 192.168.1.0 mask 255.255.255.0
[Huawei-ip-pool-01]gateway-list 192.168.1.1
[Huawei-ip-pool-01]dns-list 8.8.8.8 114.114.114.114

[Huawei]interface g0/0/0
[Huawei-GigabitEthernet0/0/0]dhcp select global 
[Huawei-GigabitEthernet0/0/0]quit

Interface g0/0/1 IP：

[Huawei]interface g0/0/1	
[Huawei-GigabitEthernet0/0/0]ip address 172.16.1.1 24

[Huawei]dhcp enable
[Huawei]interface g0/0/1
[Huawei-GigabitEthernet0/0/0]ip pool 02
Info: It's successful to create an IP address pool.
[Huawei-ip-pool-01]network 172.16.1.0 mask 255.255.255.0
[Huawei-ip-pool-01]gateway-list 172.16.1.1
[Huawei-ip-pool-01]dns-list 8.8.8.8 114.114.114.114

[Huawei]interface g0/0/1
[Huawei-GigabitEthernet0/0/0]dhcp select global 
[Huawei-GigabitEthernet0/0/0]quit

Check the interface IP：

[Huawei]display ip interface brief 
*down: administratively down
^down: standby
(l): loopback
(s): spoofing
The number of interface that is UP in Physical is 3
The number of interface that is DOWN in Physical is 1
The number of interface that is UP in Protocol is 3
The number of interface that is DOWN in Protocol is 1

Interface                         IP Address/Mask      Physical   Protocol  
GigabitEthernet0/0/0              192.168.1.1/24       up         up        
GigabitEthernet0/0/1              172.16.1.1/24        up         up        
GigabitEthernet0/0/2              unassigned           down       down      
NULL0                             unassigned           up         up(s) 

see PC Whether to obtain DHCP service ：

PC>ipconfig

Link local IPv6 address...........: fe80::5689:98ff:fef1:6b15
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-F1-6B-15
DNS server........................: 8.8.8.8
                                    114.114.114.114

Check the interface g0/0/0  DHCP：

[Huawei]interface g0/0/0
[Huawei-GigabitEthernet0/0/0]dis th
[V200R003C00]
#
interface GigabitEthernet0/0/0
 ip address 192.168.1.1 255.255.255.0 
 dhcp select global
#
return

test ：

PC>ping 172.16.1.254

Ping 172.16.1.254: 32 data bytes, Press Ctrl_C to break
Request timeout!
From 172.16.1.254: bytes=32 seq=2 ttl=127 time=47 ms
From 172.16.1.254: bytes=32 seq=3 ttl=127 time=63 ms
From 172.16.1.254: bytes=32 seq=4 ttl=127 time=78 ms
From 172.16.1.254: bytes=32 seq=5 ttl=127 time=78 ms

--- 172.16.1.254 ping statistics ---
  5 packet(s) transmitted
  4 packet(s) received
  20.00% packet loss
  round-trip min/avg/max = 0/66/78 ms

Experimental screenshot ：

  

The above process is what we want , Welcome friends to correct ！ Thank you very much !