1. 在LSW1配置接口地址池功能
[LSW1]vlan batch 10 20 30
[LSW1]dhcp enable
[LSW1-Vlanif10]ip add 10.1.1.1 28
[LSW1-Vlanif20]ip add 10.1.1.1 28
[LSW1-Vlanif30]ip add 10.3.1.1 28
[LSW1-Vlanif30]dhcp select interface
[LSW1-Vlanif20]dhcp select interface
[LSW1-Vlanif10]dhcp select interface
[LSW1-GigabitEthernet0/0/2]port link-type trunk
[LSW1-GigabitEthernet0/0/2]port trunk allow-pass vlan 10 20
[LSW1-GigabitEthernet0/0/3]port link-type trunk
[LSW1-GigabitEthernet0/0/3]port trunk allow-pass vlan 30
2. 在LSW2和LSW3上与新加入网络主机相连的接口配置基于子网划分VLAN功能
[LSW2]dhcp enable
[LSW2]vlan batch 10 20
[LSW2-GigabitEthernet0/0/2]port link-type hybrid
[LSW2-GigabitEthernet0/0/2]port hybrid untagged vlan 10
[LSW2-GigabitEthernet0/0/2]ip-subnet-vlan enable
[LSW2-GigabitEthernet0/0/3]port link-type hybrid
[LSW2-GigabitEthernet0/0/3]port hybrid untagged vlan 20
[LSW2-GigabitEthernet0/0/3]ip-subnet-vlan enable
[LSW2-GigabitEthernet0/0/1]port link-type trunk
[LSW2-GigabitEthernet0/0/1]port trunk allow-pass vlan 10 20
[LSW3]dhcp enable
[LSW3]vlan batch 30
[LSW3-GigabitEthernet0/0/2]port link-type hybrid
[LSW3-GigabitEthernet0/0/2]port hybrid untagged vlan 30
[LSW3-GigabitEthernet0/0/2]ip-subnet-vlan enable
[LSW3-GigabitEthernet0/0/3]port link-type hybrid
[LSW3-GigabitEthernet0/0/3]port hybrid untagged vlan 30
[LSW3-GigabitEthernet0/0/3]ip-subnet-vlan enable
[LSW3-GigabitEthernet0/0/1]port link-type trunk
[LSW3-GigabitEthernet0/0/1]port trunk allow-pass vlan 30
3. 在LSW2上配置基于MAC地址的DHCP策略VLAN功能，实现根据PC1的MAC地址申请到10.1.1.1/28网段的IP地址
[LSW2]vlan 10
[LSW2-vlan10]ip-subnet-vlan ip 10.1.1.1 28
[LSW2-vlan10]dhcp policy-vlan mac-address 5489-9854-4D93
4. 在LSW2上配置基于接口的DHCP策略VLAN功能，实现与PC2能申请到10.2.1.1/28网段的IP地
[LSW2]vlan 20
[LSW2-vlan20]ip-subnet-vlan ip 10.2.1.1 28
[LSW2-vlan20]dhcp policy-vlan port GigabitEthernet 0/0/3
5. 在LSW3上配置普通的DHCP策略VLAN功能，实现PC3和PC4都能申请到10.3.1.1/28网段的IP地址
[LSW3]vlan 30
[LSW3-vlan30]ip-subnet-vlan ip 10.3.1.1 28
[LSW3-vlan30]dhcp policy-vlan generic
6. PC都选择以DHCP方式获取IP地址
7. 验证配置
