4 Command Line Interface

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 4-169),these interfaces will admit traffic of any protocol type into the associated VLAN.

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.

Console(config)#interface ethernet 1/1

Console(config-if)#protocol-vlan protocol-group 1 vlan 2

Console(config-if)#

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

Example

This shows protocol group 1 configured for IP over Ethernet:

Console#show protocol-vlan protocol-group

ProtocolGroup ID Frame Type Protocol Type

------------------ -------------

---------------

1

ethernet

08 00

Console#

 

 

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