Web Management Guide-R04

Table Of Contents
Chapter 5
| VLAN Configuration
IEEE 802.1Q Tunneling
– 186 –
3. Enable Tunnel Status, and specify the TPID if a client attached to a tunnel port is
using a non-standard ethertype to identify 802.1Q tagged frames.
4. Click Apply.
Figure 92: Enabling QinQ Tunneling
Creating
CVLAN to SPVLAN
Mapping Entries
Use the VLAN > Tunnel (Configure Service) page to create a CVLAN to SPVLAN
mapping entry.
Command Usage
The inner VLAN tag of a customer packet entering the edge router of a service
providers network is mapped to an outer tag indicating the service provider
VLAN that will carry this traffic across the 802.1Q tunnel. By default, the outer
tag is based on the default VID of the edge routers ingress port. This process is
performed in a transparent manner as described under “IEEE 802.1Q
Tunneling on page 181.
When priority bits are found in the inner tag, these are also copied to the outer
tag. This allows the service provider to differentiate service based on the
indicated priority and appropriate methods of queue management at
intermediate nodes across the tunnel.
Rather than relying on standard service paths and priority queuing, QinQ VLAN
mapping can be used to further enhance service by defining a set of
differentiated service pathways to follow across the service providers network
for traffic arriving from specified inbound customer VLANs.
Note that all customer interfaces should be configured as access interfaces
(that is, a user-to-network interface) and service provider interfaces as uplink
interfaces (that is, a network-to-network interface). Use the Configure Interface
page described in the next section to set an interface to access or uplink mode.
Parameters
These parameters are displayed:
Port – Port identifier. (Range: 1-28)
Customer VLAN ID – VLAN ID for the inner VLAN tag. (Range: 1-4094)