Chapter 28: VLANs and Multiple VLAN Commands

 

port

Specifies the ports on the switch that are either

 

tagged or untagged members of the new VLAN. You

 

can specify the ports individually (for example, 5, 7,

 

22), as a range (for example, 18-23), or both (for

 

example, 1, 5, 14-22). To specify all ports on the

 

switch, use ALL. This parameter must be followed by

 

the FRAME parameter.

frame

Specifies whether the ports of the VLAN are to be

 

tagged or untagged. This parameter must be used

 

with the PORT parameter.

taggedports

Specifies the ports on the switch to serve as tagged

 

ports in the VLAN. To specify all ports on the switch,

 

use ALL. Omit this parameter if the VLAN does not

 

contain tagged ports.

untaggedports

Specifies the ports on the switch to function as

 

untagged ports in the VLAN. To specify all ports on

 

the switch, use ALL. Omit this parameter if the VLAN

 

does not contain untagged ports.

Description

This command creates a new port-based or tagged VLAN.

This command has two syntaxes. You can use either syntax to create a port-based or tagged VLAN. The difference between the two syntaxes is how you specify which ports are members of the VLAN and whether the ports are tagged or untagged. Syntax 1 is limited because it allows you to specify either tagged or untagged ports, but not both at the same time. On the other hand, you can use Syntax 2 to create a VLAN that has both types of ports. This is illustrated in the Examples section below.

When you create a new VLAN, untagged ports of the new VLAN are automatically removed from their current untagged VLAN assignment. This is because a port can be an untagged member of only one VLAN at a time. For example, creating a new VLAN with untagged Ports 1 to 4 automatically removes these ports from whichever VLAN they are currently untagged members.

The PVID of an untagged port is automatically changed to match the VID number of the VLAN to which it is added. For instance, if you make port 4 an untagged member of a VLAN with a VID of 15, port 4’s PVID is changed to 15 automatically.

436

Page 436
Image 436
Allied Telesis management software layer 2+ fast ethernet switches Port Specifies the ports on the switch that are either