实验要求
1.pc1和pc3所在接口为access；属于vlan2
pc2/4/5/6处于同一阶段；其中pc2可以访问pc4/5/6;但pc4可以访问pc5；不能访问pc6
2.pc5不能访问pc6
3.pc1/3与pc4/5/6不在同一网段
4.所有pc通过DHCP获取IP地址，且pc1/3可以正常访问pc2/4/5/6
实验步骤
一、三台交换机上创建vlan
LSW1
[LSW1]vlan batch 2 to 5
LSW2
[LSW2]vlan batch 2 to 5
LSW3
[LSW3]vlan batch 2 to 5
二、接口划分vlan（pc1/3使用avvess模式，pc2/4/5/6使用hybrid）
LSW1
[LSW1]int g0/0/1
[LSW1-GigabitEthernet0/0/1]port link-type access
[LSW1-GigabitEthernet0/0/1]port default vlan 2
[LSW1-GigabitEthernet0/0/1]int g0/0/2
[LSW1-GigabitEthernet0/0/2]port hybrid pvid vlan 3
[LSW1-GigabitEthernet0/0/2]port hybrid untagged vlan 2 to 5
LSW2
[LSW2]int g0/0/1
[LSW2-GigabitEthernet0/0/1]port link-type access
[LSW2-GigabitEthernet0/0/1]port default vlan 2
[LSW2-GigabitEthernet0/0/1]int g0/0/2
[LSW2-GigabitEthernet0/0/2]port hybrid pvid vlan 4
[LSW2-GigabitEthernet0/0/2]port hybrid untagged vlan 2 to 4
LSW3
[LSW3]int g0/0/1
[LSW3-GigabitEthernet0/0/1]port hybrid pvid vlan 4
[LSW3-GigabitEthernet0/0/1]port hybrid untagged vlan 2 to 4
[LSW3-GigabitEthernet0/0/1]int g0/0/2
[LSW3-GigabitEthernet0/0/2]port hybrid pvid vlan 5
[LSW3-GigabitEthernet0/0/2]port hybrid untagged vlan 2 3 5
三、trunk干道(三台交换机中间的干道链路全部trunk,允许所有vlan通过)
LSW1
[LSW1-GigabitEthernet0/0/2]int g0/0/3
[LSW1-GigabitEthernet0/0/3]port link-type trunk
[LSW1-GigabitEthernet0/0/3]port trunk allow-pass vlan all
LSW2
[LSW2-GigabitEthernet0/0/2]int g0/0/3
[LSW2-GigabitEthernet0/0/3]port link-type trunk
[LSW2-GigabitEthernet0/0/3]port trunk allow-pass vlan all
[LSW2-GigabitEthernet0/0/3]int g0/0/4
[LSW2-GigabitEthernet0/0/4]port link-type trunk
[LSW2-GigabitEthernet0/0/4]port trunk allow-pass vlan all
LSW3
[LSW3-GigabitEthernet0/0/2]int g0/0/3
[LSW3-GigabitEthernet0/0/3]port link-type trunk
[LSW3-GigabitEthernet0/0/3]port trunk allow-pass vlan all
四、vlan间路由器（单臂路由——子接口——交换机连接路由器的交换机LSW1接口0/0/4设置hybird模式，允许vlan2携带标签转发，vlan3/4/5剥离标签转发）
LSW1
[LSW1-GigabitEthernet0/0/3]int g0/0/4
[LSW1-GigabitEthernet0/0/4]port hybrid untagged vlan 3 to 5
[LSW1-GigabitEthernet0/0/4]port hybrid tagged vlan 2
R1
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip ad 192.168.1.1 24
[r1-GigabitEthernet0/0/0]int g0/0/0.1
[r1-GigabitEthernet0/0/0.1]dot ter vid 2
[r1-GigabitEthernet0/0/0.1]ip ad 192.168.2.1 24
[r1-GigabitEthernet0/0/0.1]arp broadcast enable
[r1-GigabitEthernet0/0/0.1]dhcp enable.
[r1]ip pool a
[r1-ip-pool-a]network 192.168.1.0 mask 24
[r1-ip-pool-a]gateway-list 192.168.1.1
[r1-ip-pool-a]dns-list 114.114.114.114 8.8.8.8
[r1]ip pool b
[r1-ip-pool-b]network 192.168.2.0 mask 24
[r1-ip-pool-b]gateway-list 192.168.2.1
[r1-ip-pool-b]dns-list 114.114.114.114 8.8.8.8
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]dncp select global