H3C Technologies H3C S7500E Series Switches - Manual (Page 274)

20-5
Protocol type Value
802.1x 0x888E
Cluster 0x88A7
Reserved 0xFFFD/0xFFFE/0xFFFF
Configuring Outer VLAN Tag Priority
By default, when tagging a tagged frame, the H3C S7500E series Ethernet switches copy the priority
carried in the inner VLAN tag to the outer VLAN tag of the frame and uses the priority as the
transmission priority of the frame in the service provider network. When there are a large number of
users connected to the switch and many types of packets, the packet priority you configured may
conflict with the data transmission policy in the service provider network. In this case, you can use the
QoS policy function provided by the S7500E series switch to configure the priority in the outer VLAN
tag for frames in the following two ways:
Inner VLAN-to-outer VLAN tag priority mapping: classify traffic based on inner VLAN; configure an
action of marking traffic with outer VLAN tag priority in the traffic behavior.
Inner-to-outer VLAN tag priority mapping: classify traffic based on inner VLAN tag priority;
configure an action of marking traffic with outer VLAN tag priority in the traffic behavior.
Protocols and Standards
IEEE 802.1Q: IEEE standard for local and metropolitan area networks: Virtual Bridged Local Area
Networks
Configuring Basic QinQ
Enabling Basic QinQ
Follow these steps to enable basic QinQ:
To do... Use the command... Remarks
Enter system view system-view —
Enter
interface view
or port group
view
Enter Ethernet
or Layer-2
aggregate
interface view
interface interface-type
interface-number
Required
Use either command.
Settings made in Ethernet