华为交换机 DHCP中继全局不同网段配置

一、组网需求

1、DHCP作为公司汇聚交换机，在上面配置DHCP全局地址池，然后接入交换机根据不同vlan会获取到不同网段IP地址。

2、网络拓扑

二、操作步骤

1、客户端

1）创建DHCP服务器组，并为DHCP服务器组添加DHCP服务器对应网段的网关IP

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）创建vlan

[Client]vlan batch 10 20

3）使能全局DHCP功能

[Client]dhcp enable

4）开启vlanif中继功能并配置接口IP，指定DHCP服务器。

[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）配置接口

[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服务器

1）使能DHCP

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

2）创建vlan，配置IP地址，并让vlan接口下的客户端从全局地址池中获取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）配置全局地址池

[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）配置接口

[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、验证

1）PC设置自动获取IP

2）ping测试