SNR S2989G-48TX-DC — настройка функций безопасности и VLAN в сетевых устройствах [397/553]

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S2989G-24TX Operation Manual

Chapter 6 Security Function Configuration

6-124

Command

Explanation

Admin mode

show mls qos {interface [<interface-id>]

Show flexible QinQ configuration on the

port.

6.15.3

Flexible QinQ Example

Figure 6-42 Flexible QinQ application topology

As shown in the figure, the first user is assigned three VLANs that the tag values are

1001, 2001, 3001 respectively in DSLAM1. VLAN1001 corresponds to Broad Band

Network, VLAN2001 corresponds to VOIP, VLAN3001 corresponds to VOD. After the

downlink port enables flexible QinQ function, the packets will be packed with different

external tags according to VLAN ID of users. The packet with tag 1001 will be packed an

external tag 1001 directly(This tag is unique in public network), enter Broad Band

Network-VLAN1001 and classfied to BRAS device. The packet with tag 2001(or 3001) will

be packed an external tag 2001(or 3001) and classfied to SR device according to the flow

rules. The second user can be assigned different VLAN tags for different VLANs in

DSLAM2. Notice: The assigned VLAN tag of the second user may be same with the first

user and the packet with tag will be also packed an external tag. In the above figure, the

external tag of the second user is different to the first user for distinguishing DSLAM

location and locating the user finally.

The configuration in the following:

If the data flow of DSLAM1 enters the switch’s downlink port1, the configuration is as

follows: