Configuring IEEE 802.1Q Tunneling 52

Example

Console(config)#interface ethernet 1/1

Console(config-if)#switchport dot1q-tunnel mode access

Console(config-if)#

Related Commands

show dot1q-tunnel(52-16)

show interfaces switchport (45-10)

switchport dot1q-tunnel tpid

This command sets the Tag Protocol Identifier (TPID) value of a tunnel port. Use the no form to restore the default setting.

Syntax

switchport dot1q-tunnel tpid tpid no switchport dot1q-tunnel tpid

tpid – Sets the ethertype value for 802.1Q encapsulation. This identifier is used to select a nonstandard 2-byte ethertype to identify 802.1Q tagged frames. The standard ethertype value is 0x8100. (Range: 0800-FFFF hexadecimal)

Default Setting

0x8100

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

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 members of a VLAN should be set to the same ethertype.

Example

Console(config)#interface ethernet 1/1

Console(config-if)#switchport dot1q-tunnel tpid 9100

Console(config-if)#

Related Commands

show interfaces switchport (45-10)

52-15

Page 475
Image 475
Accton Technology ES4524D, ES4548D, 24/48-Port manual Switchport dot1q-tunnel tpid, 0x8100