Chapter 21
| VLAN Commands
GVRP and Bridge Extension Commands
– 558 –
switchport forbidden
vlan
This command configures 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. (Range: 1-4094).
Default Setting
No VLANs are included in the forbidden list.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
â—† This command prevents a VLAN from being automatically added to the
specified interface via GVRP.
â—† 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.
â—† GVRP cannot be enabled for ports set to Access mode (see the switchport
mode command).
â—† This command will not be accepted if the specified VLAN does not exist on the
switch.
Example
The following example shows how to prevent port 1 from being added to VLAN 3:
Console(config)#interface ethernet 1/1
Console(config-if)#switchport forbidden vlan add 3
Console(config-if)#
switchport gvrp This command enables GVRP for a port. Use the no form to disable it.
Syntax
[no] switchport gvrp
Default Setting
Disabled
To Next Page
Loading...
Need help?
General