一、DHCP中继，相同网段
1、网络拓扑图
2、LSW2配置
vlan batch 100 200
interface Ethernet0/0/1
port link-type access
port default vlan 100
interface Ethernet0/0/2
port link-type access
port default vlan 200
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
3、LSW3配置
vlan batch 100 200
interface Ethernet0/0/1
port link-type access
port default vlan 100
interface Ethernet0/0/2
port link-type access
port default vlan 200
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
3、LSW1配置
vlan batch 100 200
cluster enable
ntdp enable
ndp enable
drop illegal-mac alarm
dhcp enable
diffserv domain default
drop-profile default
ip pool dhcp1
gateway-list 192.168.100.1
network 192.168.100.0 mask 255.255.255.0
lease day 7 hour 0 minute 0
dns-list 2.2.2.2 4.4.4.4
ip pool dhcp2
gateway-list 192.168.200.1
network 192.168.200.0 mask 255.255.255.0
lease day 7 hour 0 minute 0
dns-list 2.2.2.2 4.4.4.4
aaa
authentication-scheme default
authorization-scheme default
accounting-scheme default
domain default
domain default_admin
local-user admin password simple admin
local-user admin service-type http
interface Vlanif1
interface Vlanif100
ip address 192.168.100.1 255.255.255.0
dhcp select global
interface Vlanif200
ip address 192.168.200.1 255.255.255.0
dhcp select global
interface MEth0/0/1
interface GigabitEthernet0/0/1
port link-type trunk
port trunk allow-pass vlan 2 to 4094
interface GigabitEthernet0/0/2
port link-type trunk
port trunk allow-pass vlan 2 to 4094
二、验证结果
把所有PC机的IP配置设置为DHCP，再在命令行中输入ipconfig验证效果