Black Box LGB6026A, Management Manual

Page: 905 / 1289

– 903 –
C
HAPTER
38 | VLAN Commands
Configuring IEEE 802.1Q Tunneling
C
OMMAND
U
SAGE
◆
Use the switchport dot1q-tunnel tpid command to set a custom
802.1Q ethertype value on the selected interface. This feature allows
the switch to interoperate with third-party switches that do not use the
standard 0x8100 ethertype to identify 802.1Q-tagged frames. For
example, 0x1234 is set as the custom 802.1Q ethertype on a trunk
port, incoming frames containing that ethertype are assigned to the
VLAN contained in the tag following the ethertype field, as they would
be with a standard 802.1Q trunk. Frames arriving on the port
containing any other ethertype are looked upon as untagged frames,
and assigned to the native VLAN of that port.
◆
All ports on the switch will be set to the same ethertype.
E
XAMPLE
Console(config)#interface ethernet 1/1
Console(config-if)#switchport dot1q-tunnel tpid 9100
Console(config-if)#
R
ELATED
C
OMMANDS
show interfaces switchport (835)
show dot1q-tunnel
This command displays information about QinQ tunnel ports.
C
OMMAND
M
ODE
Privileged Exec
E
XAMPLE
Console(config)#dot1q-tunnel system-tunnel-control
Console(config)#interface ethernet 1/1
Console(config-if)#switchport dot1q-tunnel mode access
Console(config-if)#interface ethernet 1/2
Console(config-if)#switchport dot1q-tunnel mode uplink
Console(config-if)#end
Console#show dot1q-tunnel
Current double-tagged status of the system is Enabled
The dot1q-tunnel mode of the set interface 1/1 is Access mode, TPID is 0x8100.
The dot1q-tunnel mode of the set interface 1/2 is Uplink mode, TPID is 0x8100.
The dot1q-tunnel mode of the set interface 1/3 is Normal mode, TPID is 0x8100.
.
R
ELATED
C
OMMANDS
switchport dot1q-tunnel mode ( 901 )