一、实验拓扑
二、实验需求
1、全网可达
2、使用DHCP获取IP地址
三、实验思路
1、划分地址、进行地址配置
2、vlan配置：
划分vlan；
更改接口的链路类型，将相应的接口加入vlan；
在trunk链路上放行网络中的vlan
3、配置子接口
4、DHCP配置
四、实验步骤
1、创建vlan
SW1vlan 2
SW1-vlan2vlan 3
SW2vlan 2
SW2-vlan2vlan 3
SW3vlan 2
SW3-vlan2vlan 3
2、接口加入相应vlan，配置trunk链路，精确放行相应VLAN
SW1int e0/0/2
SW1-Ethernet0/0/2port link-type access
SW1-Ethernet0/0/2port default vlan 2
SW1-Ethernet0/0/2int e0/0/3
SW1-Ethernet0/0/3port link-type access
SW1-Ethernet0/0/3port default vlan 3
SW1-Ethernet0/0/3int e0/0/1
SW1-Ethernet0/0/1port link-type trunk
SW1-Ethernet0/0/1port trunk allow-pass vlan 2 3
SW2int e0/0/3
SW2-Ethernet0/0/3port link-type access
SW2-Ethernet0/0/3port default vlan 2
SW2-Ethernet0/0/3int e0/0/4
SW2-Ethernet0/0/4port link-type access
SW2-Ethernet0/0/4port default vlan 3
SW2-Ethernet0/0/4int e0/0/2
SW2-Ethernet0/0/2port link-type trunk
SW2-Ethernet0/0/2port trunk allow-pass vlan 2 3
SW2int e0/0/1
SW2-Ethernet0/0/1port link-type trunk
SW2-Ethernet0/0/1port trunk allow-pass vlan 2 3
SW3int e0/0/2
SW3-Ethernet0/0/2port link-type access
SW3-Ethernet0/0/2port default vlan 2
SW3-Ethernet0/0/2int e0/0/3
SW3-Ethernet0/0/3port link-type access
SW3-Ethernet0/0/3port default vlan 3
SW3-Ethernet0/0/3int e0/0/1
SW3-Ethernet0/0/1port link-type trunk
SW3-Ethernet0/0/1port trunk allow-pass vlan 2 3
3、在路由器上配置路由信息或者子接口信息，实现全网通
R1int g0/0/0.2
R1-GigabitEthernet0/0/0.2ip a 192.168.1.254 24
R1-GigabitEthernet0/0/0.2dot1q termination vid 2
R1-GigabitEthernet0/0/0.2arp broadcast enable
R1int g0/0/0.3
R1-GigabitEthernet0/0/0.3ip a 192.168.2.254 24
R1-GigabitEthernet0/0/0.3dot1q termination vid 3
R1-GigabitEthernet0/0/0.3arp broadcast enable
R1int g0/0/1.2
R1-GigabitEthernet0/0/1.2ip a 192.168.3.254 24
R1-GigabitEthernet0/0/1.2dot1q termination vid 2
R1-GigabitEthernet0/0/1.2arp broadcast enable
R1int g0/0/1.3
R1-GigabitEthernet0/0/1.3ip a 192.168.4.254 24
R1-GigabitEthernet0/0/1.3dot1q termination vid 3
R1-GigabitEthernet0/0/1.3arp broadcast enable
4、DHCP配置
R1dhcp enable
R1ip pool aa
R1-ip-pool-aanet 192.168.1.0 mask 24
R1-ip-pool-aagateway-list 192.168.1.254
R1-ip-pool-aadns-list 114.114.114.114 8.8.8.8
R1int g0/0/0.2
R1-GigabitEthernet0/0/0.2dhcp select global
R1ip pool bb
R1-ip-pool-bbnet 192.168.2.0 mask 24
R1-ip-pool-bbgateway-list 192.168.2.254
R1-ip-pool-bbdns-list 114.114.114.114 8.8.8.8
R1int g0/0/0.3
R1-GigabitEthernet0/0/0.3dhcp select global
R1ip pool cc
R1-ip-pool-ccnet 192.168.3.0 mask 24
R1-ip-pool-ccgateway-list 192.168.3.254
R1-ip-pool-ccdns-list 114.114.114.114 8.8.8.8
R1int g0/0/1.2
R1-GigabitEthernet0/0/1.2dhcp select global
R1ip pool dd
R1-ip-pool-ddnet 192.168.4.0 mask 24
R1-ip-pool-ddgateway-list 192.168.4.254
R1-ip-pool-dddns-list 114.114.114.114 8.8.8.8
R1int g0/0/1.3
R1-GigabitEthernet0/0/1.3dhcp select global
实现全网通
