一、組網需求

1、DHCP作為公司匯聚交換機，在上面配置DHCP全域性地址池，然後接入交換機根據不同vlan會獲取到不同網段IP地址。

2、網路拓撲

二、操作步驟

1、客戶端

1）建立DHCP伺服器組，併為DHCP伺服器組新增DHCP伺服器對應網段的閘道器IP

<Huawei>system-view 
[Huawei]sysname Client
[Client]dhcp server group dhcp1
[Client-dhcp-server-group-dhcp1]dhcp-server 192.168.1.1
[Client-dhcp-server-group-dhcp1]q

[Client]dhcp server group dhcp2
[Client-dhcp-server-group-dhcp2]dhcp-server  192.168.2.1
[Client-dhcp-server-group-dhcp2]q
 

2）建立vlan

[Client]vlan batch 10 20

3）使能全域性DHCP功能

[Client]dhcp enable

4）開啟vlanif中繼功能並配置介面IP，指定DHCP伺服器。

[Client]interface  Vlanif 10
[Client-Vlanif10]dhcp select relay 
[Client-Vlanif10]ip address  192.168.1.2 24
[Client-Vlanif10]dhcp relay server-select  dhcp1
[Client-Vlanif10]q

[Client]interface  Vlanif  20
[Client-Vlanif20]dhcp select relay 
[Client-Vlanif20]ip address  192.168.2.2 24
[Client-Vlanif20]dhcp relay  server-select  dhcp2
[Client-Vlanif20]q
 

5）配置介面

[Client]interface  GigabitEthernet  0/0/1
[Client-GigabitEthernet0/0/1]port link-type trunk 
[Client-GigabitEthernet0/0/1]port trunk  allow-pass vlan all 
[Client-GigabitEthernet0/0/1]q

[Client]interface  GigabitEthernet  0/0/2
[Client-GigabitEthernet0/0/2]port link-type access  
[Client-GigabitEthernet0/0/2]port default  vlan  10
[Client-GigabitEthernet0/0/2]q

[Client]interface  GigabitEthernet  0/0/3
[Client-GigabitEthernet0/0/3]port link-type access  
[Client-GigabitEthernet0/0/3]port default  vlan  20
[Client-GigabitEthernet0/0/3]q
 

2、DHCP伺服器

1）使能DHCP

<Huawei>system-view 
[Huawei]sysname DHCP 
[DHCP]dhcp enable 

2）建立vlan，配置IP地址，並讓vlan介面下的客戶端從全域性地址池中獲取IP

[DHCP]vlan batch 10 20
	
[DHCP]interface  Vlanif 10
[DHCP-Vlanif10]ip address  192.168.1.1 24
[DHCP-Vlanif10]dhcp select global 
[DHCP-Vlanif10]q

[DHCP]interface Vlanif 20
[DHCP-Vlanif20]ip address  192.168.2.1 24
[DHCP-Vlanif20]dhcp select global 
[DHCP-Vlanif20]q

3）配置全域性地址池

[DHCP]ip pool 1
[DHCP-ip-pool-1]network 192.168.1.0 mask  24
[DHCP-ip-pool-1]gateway-list 192.168.1.1
[DHCP-ip-pool-1]lease day 1
[DHCP-ip-pool-1]q

[DHCP]ip pool 2
[DHCP-ip-pool-2]network 192.168.2.0 mask  24
[DHCP-ip-pool-2]gateway-list  192.168.2.1 
[DHCP-ip-pool-2]lease day 1
[DHCP-ip-pool-2]q

4）配置介面

[DHCP]interface  GigabitEthernet  0/0/1
[DHCP-GigabitEthernet0/0/1]port link-type trunk 
[DHCP-GigabitEthernet0/0/1]port trunk allow-pass vlan  all 
[DHCP-GigabitEthernet0/0/1]q

3、驗證

1）PC設定自動獲取IP

2）ping測試