DELL PC6224F User Manual

Page of 1356
VLAN Commands
597
Syntax
switchport forbidden vlan {add 
vlan-list | remove vlan-list}
• add 
vlan-list — List of valid VLAN IDs to add to the forbidden list. 
Separate nonconsecutive VLAN IDs with a comma and no spaces. Use a 
hyphen to designate a range of IDs.
remove
 vlan-list — List of valid VLAN IDs to remove from the forbidden 
list. Separate nonconsecutive VLAN IDs with a comma and no spaces. Use 
a hyphen to designate a range of IDs.
Default Configuration
All VLANs allowed.
Command Mode
Interface Configuration (Ethernet, port-channel) mode
User Guidelines
This command has no user guidelines.
Example
The following example forbids adding VLAN numbers 234 through 256 to 
port 1/g8.
console(config)#interface ethernet 1/g8
console(config-if-1/g8)#switchport forbidden vlan add 
234-256
switchport general acceptable-frame-type 
tagged-only
Use the switchport general acceptable-frame-type tagged-only command in 
Interface Configuration mode to discard untagged frames at ingress. To 
enable untagged frames at ingress, use the no form of this command.
Syntax
switchport general acceptable-frame-type tagged-only