LevelOne GTL-2690 - Manual (Page 600)

Configuring IEEE 802.1Q Tunneling
34-15
34
Limitations for QinQ
• The native VLAN for the tunnel uplink ports and tunnel access ports cannot be the
same. However, the same service VLANs can be set on both tunnel port types.
• IGMP Snooping should not be enabled on a tunnel access port.
• If the spanning tree protocol is enabled, be aware that a tunnel access or tunnel
uplink port may be disabled if the spanning tree structure is automatically
reconfigured to overcome a break in the tree. It is therefore advisable to disable
spanning tree on these ports.
dot1q-tunnel system-tunnel-control
This command sets the switch to operate in QinQ mode. Use the no form to disable
QinQ operating mode.
Syntax
[no] dot1q-tunnel system-tunnel-control
Default Setting
Disabled
Command Mode
Global Configuration
Command Usage
QinQ tunnel mode must be enabled on the switch for QinQ interface settings
to be functional.
Example
Related Commands
show dot1q-tunnel (34-17)
show interfaces switchport (27-11)
switchport dot1q-tunnel mode
This command configures an interface as a QinQ tunnel port. Use the no form to
disable QinQ on the interface.
Syntax
switchport dot1q-tunnel mode {access | uplink}
no switchport dot1q-tunnel mode
• access – Sets the port as an 802.1Q tunnel access port.
• uplink – Sets the port as an 802.1Q tunnel uplink port.
Default Setting
Disabled
Console(config)#dot1q-tunnel system-tunnel-control
Console(config)#