Cisco Systems 3560 사용자 설명서

The pruning-eligible list applies only to trunk ports. Each trunk port has its own eligibility list. VTP 
pruning must be enabled for this procedure to take effect. The 

 describes how to enable VTP pruning.

Beginning in privileged EXEC mode, follow these steps to remove VLANs from the pruning-eligible list 
on a trunk port:

To return to the default pruning-eligible list of all VLANs, use the no switchport trunk pruning vlan 
interface configuration command.

A trunk port configured with IEEE 802.1Q tagging can receive both tagged and untagged traffic. By 
default, the switch forwards untagged traffic in the native VLAN configured for the port. The native 
VLAN is VLAN 1 by default.

The native VLAN can be assigned any VLAN ID.

For information about IEEE 802.1Q configuration issues, see the 

Enter global configuration mode.

interface interface-id

Select the trunk port for which VLANs should be pruned, and enter 
interface configuration mode.

switchport trunk pruning vlan {add | 
except | none | remove} vlan-list 
[,vlan[,vlan[,,,]]

Configure the list of VLANs allowed to be pruned from the trunk. (See 
the 

For explanations about using the add, except, none, and remove 
keywords, see the command reference for this release.

Separate nonconsecutive VLAN IDs with a comma and no spaces; use a 
hyphen to designate a range of IDs. Valid IDs are 2 to 1001. 
Extended-range VLANs (VLAN IDs 1006 to 4094) cannot be pruned.

VLANs that are pruning-ineligible receive flooded traffic.

The default list of VLANs allowed to be pruned contains VLANs 2 to 
1001.

Return to privileged EXEC mode.

show interfaces interface-id switchport Verify your entries in the Pruning VLANs Enabled field of the display.

(Optional) Save your entries in the configuration file.