Command Line Interface

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Default Setting
No protocol groups are mapped for any interface.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
When creating a protocol-based VLAN, only assign interfaces via this
command. If you assign interfaces using any of the other VLAN commands
(such as vlan on page 4-221), these interfaces will admit traffic of any protocol
type into the associated VLAN.
A maximum of 20 protocol VLAN groups can be defined on the switch.
When a frame enters a port that has been assigned to a protocol VLAN, it is
processed in the following manner:
- If the frame is tagged, it will be processed according to the standard rules
applied to tagged frames.
- If the frame is untagged and the protocol type matches, the frame is
forwarded to the appropriate VLAN.
- If the frame is untagged but the protocol type does not match, the frame is
forwarded to the default VLAN for this interface.
Example
The following example maps the traffic entering Port 1 which matches the protocol
type specified in protocol group 1 to VLAN 2.

show protocol-vlan protocol-group

This command shows the frame and protocol type associated with protocol groups.
Syntax
show protocol-vlan protocol-group [group-id]
group-id - Group identifier for a protocol group. (Range: 1-2147483647)
Default Setting
All protocol groups are displayed.
Command Mode
Privileged Exec
Console(config)#interface ethernet 1/1
Console(config-if)#protocol-vlan protocol-group 1 vlan 2
Console(config-if)#