Configuring Two-To-Two Vlan Mapping - H3C S5500-EI Series Configuration Manual

To do...
Enter system view
Enter Layer 2 Ethernet interface
view
Configure the port as a trunk port
Assign the port to SVLANs
Configure the port as a DHCP
snooping trusted port
Configure the port as an ARP
trusted port
Enable network-side QinQ

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
communicate at Layer 2 across two service provider networks that use different VLAN assignment
schemes.
NOTE:
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
Configuring an uplink policy for the
customer-side port
Configuring an uplink policy for the
network-side port
Configuring a downlink policy for the
customer-side port
Configuring the customer-side port
Configuring the network-side port
Use the command...
system-view
interface interface-type
interface-number
port link-type trunk
port trunk permit vlan { vlan-id-list
| all }
dhcp-snooping trust
arp detection trust
qinq enable uplink
57. Two-to-two VLAN mapping enables two remote sites in different VLANs to
Description
Replaces foreign SVLANs with local SVLANs for uplink traffic
(required).
Replaces foreign CVLANs with local CVLANs for uplink traffic
(required).
Replaces local SVLANs and CVLANs with foreign SVLANs and
CVLANs (required).
Configures VLAN and other settings required for two-to-two VLAN
mapping (required).
Configures VLAN and other settings required for two-to-two VLAN
mapping (required).
199
Remarks
—
—
Required
The default link type of an Ethernet
port is access.
Required
By default, a trunk port is in only
VLAN 1.
Required
By default, all ports are DHCP
snooping untrusted ports.
Required
By default, all ports are ARP
untrusted ports.
Required
By default, network-side QinQ is
disabled on all ports.