Platform Vlan-Stacking-Tpid; Polarity - Allied Telesis SwitchBlade x908 Series Software Reference Manual

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:
Syntax platform vlan-stacking-tpid <tpid>
Parameter
<tpid>
Global Configuration mode
Mode
To set the VLAN stacking TPID to 0x9100, use the command:
Examples
switchport vlan-stacking (double tagging)
Related Commands
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}
Parameter
mdi
mdix
auto
Interface mode
Mode
Note that if you override a port's auto-negotiation by setting a fixed speed and duplex mode,
Usage
automatic MDI/MDI-X detection is also overridden.
To set the polarity for port1.0.7 to MDI, use the commands:
Examples
C613-50007-01 REV B
Because the additional tag increases the frame size beyond 1522 bytes, you must
turn on Jumbo frames to activate VLAN-stacking.
Description
The Ethernet type of the tagged packet, as a two byte hexadecimal
number.
Default: 0x8100
awplus(config)# platform vlan-stacking-tpid 9100
Description
Sets the polarity to MDI (medium dependent interface).
Sets the polarity to MDI-X (medium dependent interface crossover).
The switch port sets the polarity automatically.
awplus(config)# interface port1.0.7
awplus(config-if)# polarity mdi
Software Reference for SwitchBlade® x908, x900 and x600 Series Switches
TM
AlliedWare Plus Operating System - Software Version 5.3.1
Switching Commands
15.23