Planet XGS3-24042 User Manual download pdf (Page 189)

100

101

21-26

vlan<vid>

no service-policy input<policy-map-name>

vlan <vid>

command deletes the specified

policy-map applied to the VLAN.

4. Show flexible QinQ policy-map bound to port

Command

Explanation

Admin mode

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

Show flexible QinQ configuration on the

port.

21.3 Flexible QinQ Example

Figure 21-1 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:

Switch(config)#class-map c1

1 2 ... 184 185 186 187 188 189 190 191 192 193 194 ... 720 721

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