Graco GE-DS-242-POE Manual De Usuario

Chapter 4: Web-Based Management 

68 

GE-DS-242-PoE Managed Ethernet Switch User Manual 

Configures IEEE 802.1Q tunneling (QinQ) for an uplink 
port to another device within the service provider 
network. 

Configures IEEE 802.1Q tunneling (QinQ) for a client 
access port to segregate and preserve customer VLAN 
IDs for traffic crossing the service provider network. 

Business customers of service providers often have specific requirements for VLAN 
IDs and the number of VLANs to be supported. The VLAN ranges required by different 
customers in the same service-provider network might overlap, and traffic of 
customers through the infrastructure might be mixed. Assigning a unique range of 
VLAN IDs to each customer would restrict customer configurations and could easily 
exceed the VLAN limit (4096) of the IEEE 802.1Q specification. 
Using the QinQ feature, service providers can use a single VLAN to support customers 
who have multiple VLANs. Customer VLAN IDs are preserved, and traffic from 
different customers is segregated within the service-provider network, even when 
they appear to be in the same VLAN. Using QinQ expands VLAN space by using a 
VLAN-in-VLAN hierarchy and retagging the tagged packets. A port configured to 
support QinQ is called a QinQ user-port. A port configured to support QinQ Uplink is 
called a QinQ uplink-port. 

 

To configure QinQ Port 
1. Enable global QinQ function: select QinQ enable "Enable".  
2. Fill QinQ Tpid.  
3. Enable port QinQ function: select QinQ checkbox for special port.  
4. Enable port QinQ Uplink function: select QinQ Uplink checkbox for special port.