H3C Technologies H3C S7500E Series Switches - Manual (Page 298)

21-15
To do... Use the command... Remarks
Apply the uplink policy to the incoming
traffic
qos apply policy policy-name
inbound
Required
Configuring the network-side port
Follow these steps to configure the network-side port:
To do... Use the command... Remarks
Enter system view system-view —
Enter Ethernet interface view
interface interface-type
interface-number
—
Configure the port as a trunk port port link-type trunk
Required
The default link type of an
Ethernet port is access.
Assign the port to all SVLANs
port trunk permit vlan
{ vlan-id-list | all }
Required
By default, a trunk port is in
only VLAN 1.
Configuring Two-to-Two VLAN Mapping
Perform two-to-two VLAN mapping on an edge device that connects two SP networks, for example, on
PE 3 in
Figure 21-2 . Two-to-two VLAN mapping enables two remote sites in different VLANs to
communicate at Layer 2 across two service provider networks that use different VLAN assignment
schemes.
For the ease of description, the VLAN tags of the double-tagged frames that arrive at the
customer-side port are called foreign CVLANs and SVLANs, and the VLAN tags marked by the edge
device are called local CVLANs and SVLANs.
Perform these tasks to configure two-to-two VLAN mapping:
Task Description
Configuring an uplink policy for the
customer-side port
Replaces foreign SVLANs with local SVLANs for uplink traffic
(required).
Configuring an uplink policy for the
network-side port
Replaces foreign CVLANs with local CVLANs for uplink traffic
(required).