QINQ 电信配置实例.doc

通过使用Q-in-Q创新技术，在城域以太网的组网能力上突破了4096个VLAN的极限，既扩展了采用VLAN组建二层网络的能力，并可通过该方式实现城域网内的二层VPN，特别适用于城域以太网广域网服务。Q-in-Q工作原理就是：数据在私网中传输时带一个私网的tag，定义为CVLAN Tag，数据进入到服务商的骨干网后，在打上一层公网的VLAN tag，定义为PVLAN Tag。到目的私网后再把PVLAN Tag剥除，为用户提供了一种较为简单的二层VPN隧道。P-VLAN Tag标签是嵌在以太网源MAC 地址和目的MAC地址之后。也包含一个12位的P-VLAN ID，可支持4096个VLAN。P-VLAN CoS域包含3位，支持8个级别的优先级。在基于Q-in-Q网络中，运营商为每个VLAN分配一个P-VLAN ID，然后把用户的C-VLANID实例映射到这些P-VLAN ID上。因此，用户的CVLAN ID就被保护起来。举个例子，假定一个用户希望使用C-VLAN ID 4，50和6的数据需要穿过公网到达另一物理位置的用户网络。公网承载这个穿透服务，并分配了P-VLAN ID 78来聚集这些C-VLAN IDs。即把用户的C-VLAN ID 4，50和6映射到P-VLAN ID 78，这样数据在公网中传输时，P-VLAN ID是透明的，而C-VLAN ID则被隐藏了起来。而且用户能够根据业务的要求自由地分配自己网络中的C-VLAN 数目和设置这些C-VLAN CoS域的优先级。简单来说就是二次封装VLAN 这是上述RAR里的东东: interface Ethernet1/0/4 port link-type hybrid undo port hybrid vlan 1 port hybrid vlan 321 tagged port hybrid vlan 3006 untagged port hybrid pvid vlan 3006 description to_trk_yijingyuan_2#_2danyuan vlan-check disable qinq vid 3006 raw-vlan-id inbound 3216 to 3287 mac-mirroring 0 src-vlan 3216 to 3287 dest-vlan 3006 # interface Ethernet1/0/5 port link-type hybrid undo port hybrid vlan 1 port hybrid vlan 321 tagged port hybrid vlan 3006 untagged port hybrid pvid vlan 3006 description to_trk_yijingyuan_3#_1danyuan vlan-check disable qinq vid 3006 raw-vlan-id inbound 3289 to 3359 mac-mirroring 0 src-vlan 3289 to 3359 dest-vlan 3006 # interface Ethernet1/0/6 port link-type hybrid undo port hybrid vlan 1 port hybrid vlan 321 tagged port hybrid vlan 3006 untagged port hybrid pvid vlan 3006 description to_trk_yijingyuan_2#_2danyuan vlan-check disable qinq vid 3006 raw-vlan-id inbound 3360 to 3431 mac-mirroring 0 src-vlan 3360 to 3431 dest-vlan 3006 # interface Ethernet1/0/7 port link-type hybrid undo port hybrid vlan 1 port hybrid vlan 321 tagged port hybrid vlan 3006 untagged port hybrid pvid vlan 3006 description to_trk_yijingyuan_3#_1danyuan vlan-check disable qinq vid 3006 raw-vlan-id inbound 3432 to 3503 mac-mirroring 0 src-vlan 3432 to 3503 dest-vlan 3006 # interface Ethernet1/0/8 port link-type hybrid undo port hybrid vlan 1 port hybrid vlan 321 tagged port hybrid vlan 3006 untagged port hybrid pvid vlan 3006 description to_trk_yijingyuan_3#_2danyuan vlan-check disable qinq vid 3006 raw-vlan-id inbound 3504 to 3575 mac-mirroring 0 src-vlan 3504 to 3575 dest-vlan 3006 # interface Ethernet1/0/9 port link-type hybrid undo port hybrid vlan 1 port hybrid vlan 321 tagged port hybrid vlan 3006 untagged port hybrid pvid vlan 3006 vlan-check disable qinq vid 3006 raw-vlan-id inbound 3801 to 3900 mac-mirroring 0 src-vlan 3801 to 3900 dest-vlan 3006 # interface Ethernet1/0/10 # interface Ethernet1/0/11 # interface Ethernet1/0/12 # interface Ethernet1/0/13 # interface Ethernet1/0/14 # interface Ethernet1/0/15 # interface Ethernet1/0/16 # interface Ethernet1/0/17 # interface Ethernet1/0/18 # interface Ethernet1/0/19 # interface Ethe