DHCP experiment demonstration (Huawei switch device configuration)

One 、DHCP Introduce

DHCP（Dynamic Host Configuration Protocol） Dynamic Host Configuration Protocol , It can automatically assign IP Address 、 Subnet mask and default gateway 、DNS Server's IP Address, etc .

ps： Huawei equipment dhcp The default allocation of address pool is from large to small .

Two 、DHCP The experiment purpose

Realization PC1 and PC2 Get IP Address ;

PC1 You can talk to PC2 Interworking .

3、 ... and 、 The topology

Four 、 Experimental configuration

（1）PC1,PC2 Choose as DHCP Automatic access to .

（2） Access switch configuration

<Huawei>sys

# Enter the system view

[Huawei]sysname acsw

# Change the switch name to acsw

[acsw]vlan batch 10 20

# establish vlan10 and 20

[acsw]un in en

# Turn off log prompt

[acsw]interface g0/0/1

# Access interface

[acsw-GigabitEthernet0/0/1]port link-type access

# Interface configuration access Pattern

[acsw-GigabitEthernet0/0/1]port default vlan 10

# Configure interface VLAN 10

[acsw-GigabitEthernet0/0/1]int g0/0/2

[acsw-GigabitEthernet0/0/2]port link-type access

[acsw-GigabitEthernet0/0/2]port default vlan 20

[acsw-GigabitEthernet0/0/2]q

[acsw]int g0/0/3

[acsw-GigabitEthernet0/0/3]port link-type trunk 

# Interface configuration trunk Pattern

[acsw-GigabitEthernet0/0/3]port trunk allow-pass vlan all

# Allow all vlan adopt

[acsw-GigabitEthernet0/0/3]q

# sign out

（3） Core switch configuration

<Huawei>system-view  

[Huawei]sysname coresw

[coresw]un in en

[coresw]int g0/0/1

[coresw-GigabitEthernet0/0/1]port link-type trunk

[coresw-GigabitEthernet0/0/1]q

[coresw]dhcp enable  

[coresw]ip pool vlan10

# The name of the address pool created is vlan10

[coresw-ip-pool-vlan10]network 192.168.10.0 mask 24

# Address pool distribution network segment

[coresw-ip-pool-vlan10]gateway-list 192.168.10.254

# Address pool distribution gateway

[coresw-ip-pool-vlan10]dns-list 8.8.8.8

# Address pool distribution dns Address

[coresw-ip-pool-vlan10]excluded-ip-address 192.168.10.101 192.168.10.253

# The address does not include the distribution range

[coresw-ip-pool-vlan10]lease day 3

 # The lease term is 3 God

[coresw-ip-pool-vlan10]q

[coresw]ip pool vlan20

[coresw-ip-pool-vlan20]network 192.168.20.0 mask 24

[coresw-ip-pool-vlan20]gateway-list 192.168.20.254

[coresw-ip-pool-vlan20]dns-list 114.114.114.114

[coresw-ip-pool-vlan20]excluded-ip-address 192.168.20.101 192.168.20.253

[coresw-ip-pool-vlan20]lease day 5

[coresw-ip-pool-vlan20]q

[coresw]vlan batch 10 20

[coresw]int Vlanif 10

[coresw-Vlanif10]ip add 192.168.10.254 24

[coresw-Vlanif10]dhcp select global

# stay vlan10 Enable dhcp service  

[coresw-Vlanif10]q

[coresw]int Vlanif 20

[coresw-Vlanif20]ip add 192.168.20.254 24

[coresw-Vlanif20]dhcp select global 

[coresw-Vlanif20]q

[coresw]interface g0/0/1

[coresw-GigabitEthernet0/0/1]port link-type trunk 

[coresw-GigabitEthernet0/0/1]port trunk allow-pass vlan all

（4） verification

PC1 and PC2 Automatically get IP Address .

PC1 and PC2 Interworking , Configuration is successful .