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100

101

VLAN C

OMMANDS

4-171

• If a VLAN on the forbidden list for an interface is manually added to

that interface, the VLAN is automatically removed from the forbidden

list for that interface.

Example

The following example shows how to add VLANs 1, 2, 5 and 6 to the

allowed list as tagged VLANs for port 1:

switchport forbidden vlan

Use this command to configure forbidden VLANs. Use the no form to

remove the list of forbidden VLANs.

Syntax

switchport forbidden vlan {add vlan-list | remove vlan-list}

no switchport forbidden vlan

• add vlan-list - List of VLAN identifiers to add.

• remove vlan-list - List of VLAN identifiers to remove.

• vlan-list - Separate nonconsecutive VLAN identifiers with a comma

and no spaces; use a hyphen to designate a range of IDs. Do not

enter leading zeros. (Range: 1-4094).

Default Setting

No VLANs are included in the forbidden list.

Command Mode

Interface Configuration (Ethernet, Port Channel)

Command Usage

• This command prevents a VLAN from being automatically added to

the specified interface via GVRP.

• If a VLAN has been added to the set of allowed VLANs for an

interface, then you cannot add it to the set of forbidden VLANs for

that same interface.

Console(config)#interface ethernet 1/1

Console(config-if)#switchport allowed vlan add 1,2,5,6 tagged

Console(config-if)#

1 2 ... 452 453 454 455 456 457 458 459 460 461 462 ... 617 618

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