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H3C交换机配置DHCP中继

article 2025/8/30 6:21:14

H3C交换机配置DHCP

DHCP简介

DHCP（Dynamic Host Configuration Protocol，动态主机配置协议）用来为网络设备动态地分配IP地址等网络配置参数。
DHCP采用C/S通信模式，由客户端向服务器提出请求分配网络配置参数的申请，服务器返回为客户端分配的IP地址等配置信息，以实现IP地址等信息的动态配置。

实验拓扑

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实验目标

1.网络中有两个vlan，vlan10，vlan20， DHCP Server服务器能够跨网段为vlan10、vlan20分配地址，PC1能够从DHCP服务器上获取192.168.10.0/24网段的地址，PC2能够从DHCP服务器上获取192.168.20.0/24网段的地址。

实验步骤

1.配置SW1
[H3C]sysname SW1
[SW1]vlan 10 20
[SW1]interface GigabitEthernet 1/0/2
[SW1-GigabitEthernet1/0/2]port access vlan 10
[SW1-GigabitEthernet1/0/2]interface GigabitEthernet 1/0/3
[SW1-GigabitEthernet1/0/3]port access vlan 20
[SW1-GigabitEthernet1/0/3]exit
[SW1]interface GigabitEthernet 1/0/1
[SW1-GigabitEthernet1/0/1]port link-type trunk
[SW1-GigabitEthernet1/0/1]port trunk permit vlan 10 20
[SW1]dhcp enable2.配置 DHCP Relay
[H3C]sysname DHCP Relay
[DHCP Relay]dhcp enable
[DHCP Relay]vlan 10 20 30
[DHCP Relay]interface GigabitEthernet 1/0/1
[DHCP Relay-GigabitEthernet1/0/1]port link-type trunk
[DHCP Relay-GigabitEthernet1/0/1]port trunk permit vlan 10 20
[DHCP Relay-GigabitEthernet1/0/2]port access vlan 30
[DHCP Relay-GigabitEthernet1/0/2]exit
[DHCP Relay]interface Vlan-interface 30
[DHCP Relay-Vlan-interface30]ip address 10.1.23.2 24
[DHCP Relay]interface Vlan-interface 10
[DHCP Relay-Vlan-interface10]dhcp relay server-address 10.1.23.3
[DHCP Relay-Vlan-interface10]dhcp select relay
[DHCP Relay-Vlan-interface10]interface Vlan-interface 20
[DHCP Relay-Vlan-interface20]dhcp select relay
[DHCP Relay-Vlan-interface20]dhcp relay server-address 10.1.23.3
[DHCP Relay-Vlan-interface20]quit3.配置DHCP Server
[DHCP Server]dhcp enable
[DHCP Server]vlan 10 20 30
[DHCP Server]interface Vlan-interface 30
[DHCP Server-Vlan-interface30]ip address 10.1.23.3 24
[DHCP Server]interface GigabitEthernet 1/0/1
[DHCP Server-GigabitEthernet1/0/1]port access vlan 30
[DHCP Server]dhcp server ip-pool vlan10
[DHCP Server-dhcp-pool-vlan10]gateway-list 192.168.10.254
[DHCP Server-dhcp-pool-vlan10]network 192.168.10.0 24
[DHCP Server-dhcp-pool-vlan10]dns-list 114.114.114.114 8.8.8.8
[DHCP Server]dhcp server ip-pool vlan20
[DHCP Server-dhcp-pool-vlan20]gateway-list 192.168.20.254
[DHCP Server-dhcp-pool-vlan20]network 192.168.20.0 24
[DHCP Server-dhcp-pool-vlan20]dns-list 114.114.114.114 8.8.8.8
[DHCP Server]interface Vlan-interface 10
[DHCP Server-Vlan-interface10]dhcp server apply ip-pool vlan10
[DHCP Server-Vlan-interface10]interface Vlan-interface 20
[DHCP Server-Vlan-interface20]dhcp server apply ip-pool vlan20
[DHCP Server]ip route-static 0.0.0.0 0 10.1.23.2