24-Port Fast Ethernet Switch Management Guide

C OMMAND L INE I NTERFACE
4-243
private-vlan
Use this command to create a primary or secondary (i.e., community) private
VLAN. Use the no form to remove the specified private VLAN.
Syntax
private-vlan vlan-id {community | primary}
no private-vlan vlan-id
• vlan-id - ID of private VLAN. (Range: 1-4093, no leading zeroes).
• community – A VLAN in which traffic is restricted to port
members.
• primary – A VLAN which can contain one or more community
VLANs, and serves to channel traffic between community VLANs
and other locations.
Default Setting
None
Command Mode
VLAN Configuration
Command Usage
• Private VLANs are used to restrict traffic to ports within the same
VLAN “community,” and channel traffic passing outside the community
through promiscuous ports that have been mapped to the associated
“primary” VLAN.
• Port membership for private VLANs is static. Once a port has been
assigned to a private VLAN, it cannot be dynamically moved to another
VLAN via GVRP.
• Private VLAN ports cannot be set to trunked mode. (See “switchport
mode” on page 4-234.)
Example
Console(config)#vlan database
Console(config-vlan)#private-vlan 2 primary
Console(config-vlan)#private-vlan 3 community
Console(config)#