一、基础知识

图片.png

二、场景

图片.png

三、配置

SW1

interface GigabitEthernet0/0/1

 port link-type trunk
 port trunk allow-pass vlan 20 30
#
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 20
#
interface GigabitEthernet0/0/3
 port link-type access
 port default vlan 30
#

SW2

interface GigabitEthernet0/0/1

 port link-type dot1q-tunnel
 port default vlan 10
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10

SW3

interface GigabitEthernet0/0/1

 port link-type trunk
 port trunk allow-pass vlan 10
#
interface GigabitEthernet0/0/2
 port link-type dot1q-tunnel
 port default vlan 10
#

SW4

interface GigabitEthernet0/0/1

 port link-type trunk
 port trunk allow-pass vlan 20 30
#
interface GigabitEthernet0/0/2
 port link-type access
 port default vlan 20
#
interface GigabitEthernet0/0/3
 port link-type access
 port default vlan 30

业务名称
 vlan区间
 外层vlan
租户1
 20

10
租户2
 30
 10

PC1中的数据——>进入SW2的GE0/0/1的报文封装外层vlan 10,反之相同

SW2<——>SW3允许VLAN10的报文通过