Administrator Guide

Layer 2 Switching Commands 815
The primary TPID is shown in the EtherType column. The primary TPID is
placed in the outer tag for traffic egressing the interface. The interface will
process traffic as double tagged if any of the configured TPIDs is present in
the frames outer VLAN tag. Traffic with a TPID other than the configured
TPID is processed normally, i.e. as if it is not double tagged.
Example
This example shows the various invocations of the command.
console(config)#show switchport ethertype
Default TPID................................... 802.1
Configured TPIDs............................... vMAN Custom (1010)
console(config)#show switchport ethertype interface gi1/0/1
Interface EtherType Secondary TPIDs
--------- --------- ---------------
Gi1/0/1 802.1
console(config-vlan10)#show switchport ethertype interface all
console(config)#show switchport ethertype interface gi1/0/1
Interface EtherType Secondary TPIDs
--------- --------- ---------------
Gi1/0/1 802.1
Gi1/0/2 802.1 VMAN
Gi1/0/3 802.1
Gi1/0/4 802.1
Gi1/0/5 802.1
show vlan
Use the show vlan command to display detailed information, including
interface information and dynamic VLAN type, for a specific VLAN or
RSPAN VLAN. The ID is a valid VLAN identification number.
Syntax
show vlan [id vlan-id | name vlan-name ]