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Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
78-16201-01
Chapter2Cisco IOS Commands for the Catalyst 4500 Series Switches
private-vlan
private-vlan
To configure PVLANs and the association between a PVLAN and a secondary VLAN, use the
private-vlan commands. To return to the default value, use the no form of this command.
private-vlan {isolated | primary}
private-vlan association secondary-vlan-list [{add secondary-vlan-list} |
{remove secondary-vlan-list}]
no private-vlan {isolated | primary}
no private-vlan association
Syntax Description
Defaults Private VLANs are not configured.
Command Modes VLAN configuration
Command History
Usage Guidelines You cannot configure VLAN 1 or VLANs 1001 to 1005 as PVLANs.
VTP does not support private VLANs. You must configure private VLANs on each device where you
want private VLAN ports.
The secondary_vlan_list parameter cannot contain spaces. It can contain multiple comma-separated
items. Each item can be a single PVLAN ID or a range of PVLAN IDs separated by hyphens.
The secondary_vlan_list parameter can contain multiple community VLAN IDs.
The secondary_vlan_list parameter can contain only one isolated VLAN ID. A PVLAN is defined as a
set of private ports characterized by a common set of VLAN number pairs: each pair is made up of at
least two special unidirectional VLANs and is used by isolated ports and/or by a community of ports to
communicate with switches.
isolated Designates the VLAN as an isolated PVLAN.
primary Designates the VLAN as the primary PVLAN.
association Creates an association between a secondary VLAN and a primary VLAN.
secondary-vlan-list Specifies the number of the secondary VLAN.
add Associates a secondary VLAN to a primary VLAN.
remove Clears the association between a secondary VLAN and a primary VLAN.
Release Modification
12.1(8a)EW Support for this command was introduced on the Catalyst 4500 series switch.
12.1(12c)EW Support for extended addressing was added.
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