
Switching Commands
©2008 Allied Telesis Inc. All rights reserved.
15.14
AlliedWare Plus
TM
Operating System Software Reference C613-50003-00 REV E
Software Version 5.2.1
platform vlan-stacking-tpid
This command specifies the Tag Protocol Identifier (TPID) value that applies to all frames that
are carrying double tagged VLANs. All nested VLANs must use the same TPID value. (This
feature is sometimes referred to as VLAN stacking or VLAN double-tagging.)
Note:
Because the additional tag increases the frame size beyond 1522 bytes, you must turn
on Jumbo frames to activate VLAN-stacking.
Syntax
platform vlan-stacking-tpid <
tpid>
Mode
Configure mode
Examples
To set the VLAN stacking TPID to 0x9100, use the command:
Related
Commands
switchport vlan-stacking (double tagging)
show platform
show running-config
polarity
This command sets the polarity on a switch port.
Ports auto-negotiate polarity by default.
Syntax
polarity {mdi|mdix|auto}
Mode
Interface mode
Examples
To set the polarity for port1.0.7 to MDI, use the commands:
awplus(config)#
interface port1.0.7
awplus(config-if)#
polarity mdi
Parameter
Description
<
tpid>
The Ethernet type of the tagged packet, as a two byte hexadecimal
number.
Default: 0x8100
awplus(config)#
platform vlan-stacking-tpid 9100
Parameter
Description
mdi
Sets the polarity to MDI (medium dependent interface).
mdix
Sets the polarity to MDI-X (medium dependent interface crossover).
auto
The switch port sets the polarity automatically.