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案例分享:QinQ基本组网配置
2022-07-01 18:43:00 【微思xmws】
配置需求
公司A的两个分支机构Site 1和Site 2通过运营商网络进行通信,该公司各业务使用的VLAN为VLAN 10~70;公司B的两个分支机构Site 3和Site 4也通过运营商网络进行通信,该公司各业务使用的VLAN为VLAN 30~90。
PE 1和PE 2为运营商网络的边缘设备,且二者通过TPID值为0x8200的运营商网络设备进行连接。
通过配置,利用运营商提供的VLAN 100使公司A的两个分支机构之间实现互通,利用运营商提供的VLAN 200使公司B的两个分支机构之间实现互通。
组网图

图1-3 QinQ配置组网图
配置步骤
(1)配置PE 1
# 配置端口GigabitEthernet1/0/1为Trunk端口,且允许VLAN 100和VLAN 10~70的报文通过。
<PE1> system-view
[PE1] interface gigabitethernet 1/0/1
[PE1-GigabitEthernet1/0/1] port link-type trunk
[PE1-GigabitEthernet1/0/1] port trunk permit vlan 100 10 to 70
# 配置端口GigabitEthernet1/0/1的PVID为VLAN 100。
[PE1-GigabitEthernet1/0/1] port trunk pvid vlan 100
# 开启端口GigabitEthernet1/0/1的QinQ功能。
[PE1-GigabitEthernet1/0/1] qinq enable
[PE1-GigabitEthernet1/0/1] quit
# 配置端口GigabitEthernet1/0/2为Trunk端口,且允许VLAN 100和VLAN 200的报文通过。
[PE1] interface gigabitethernet 1/0/2
[PE1-GigabitEthernet1/0/2] port link-type trunk
[PE1-GigabitEthernet1/0/2] port trunk permit vlan 100 200
# 在端口GigabitEthernet1/0/2上配置外层VLAN Tag的TPID值为0x8200。
[PE1-GigabitEthernet1/0/2] qinq ethernet-type service-tag 8200
[PE1-GigabitEthernet1/0/2] quit
# 配置端口GigabitEthernet1/0/3为Trunk端口,且允许VLAN 200和VLAN 30~90的报文通过。
[PE1] interface gigabitethernet 1/0/3
[PE1-GigabitEthernet1/0/3] port link-type trunk
[PE1-GigabitEthernet1/0/3] port trunk permit vlan 200 30 to 90
# 配置端口GigabitEthernet1/0/3的PVID为VLAN 200。
[PE1-GigabitEthernet1/0/3] port trunk pvid vlan 200
# 开启端口GigabitEthernet1/0/3的QinQ功能。
[PE1-GigabitEthernet1/0/3] qinq enable
[PE1-GigabitEthernet1/0/3] qui
(2)配置PE 2
# 配置端口GigabitEthernet1/0/1为Trunk端口,且允许VLAN 200和VLAN 30~90的报文通过。
<PE2> system-view
[PE2] interface gigabitethernet 1/0/1
[PE2-GigabitEthernet1/0/1] port link-type trunk
[PE2-GigabitEthernet1/0/1] port trunk permit vlan 200 30 to 90
# 配置端口GigabitEthernet1/0/1的PVID为VLAN 200。
[PE2-GigabitEthernet1/0/1] port trunk pvid vlan 200
# 开启端口GigabitEthernet1/0/1的QinQ功能。
[PE2-GigabitEthernet1/0/1] qinq enable
[PE2-GigabitEthernet1/0/1] quit
# 配置端口GigabitEthernet1/0/2为Trunk端口,且允许VLAN 100和VLAN 200的报文通过。
[PE2] interface gigabitethernet 1/0/2
[PE2-GigabitEthernet1/0/2] port link-type trunk
[PE2-GigabitEthernet1/0/2] port trunk permit vlan 100 200
# 在端口GigabitEthernet1/0/2上配置外层VLAN Tag的TPID值为0x8200。
[PE2-GigabitEthernet1/0/2] qinq ethernet-type service-tag 8200
[PE2-GigabitEthernet1/0/2] quit
# 配置端口GigabitEthernet1/0/3为Trunk端口,且允许VLAN 100和VLAN 10~70的报文通过。
[PE2] interface gigabitethernet 1/0/3
[PE2-GigabitEthernet1/0/3] port link-type trunk
[PE2-GigabitEthernet1/0/3] port trunk permit vlan 100 10 to 70
# 配置端口GigabitEthernet1/0/3的PVID为VLAN 100。
[PE2-GigabitEthernet1/0/3] port trunk pvid vlan 100
# 开启端口GigabitEthernet1/0/3的QinQ功能。
[PE2-GigabitEthernet1/0/3] qinq enable
[PE2-GigabitEthernet1/0/3] qui
(3)配置公共网络设备
配置运营商网络中PE 1到PE 2之间路径上的设备端口都允许VLAN 100和VLAN 200的报文携带VLAN Tag通过,且这些端口的MTU值至少为1504字节。
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