Cisco 3750G - Catalyst Integrated Wireless LAN Controller Configuration Manual page 405

Chapter 16 Configuring Private VLANs
Command
Step 15
show vlan private-vlan [type]
or
show interfaces status
Step 16 copy running-config startup config
When you associate secondary VLANs with a primary VLAN, note this syntax information:
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This example shows how to configure VLAN 20 as a primary VLAN, VLAN 501 as an isolated VLAN,
and VLANs 502 and 503 as community VLANs, to associate them in a private VLAN, and to verify the
configuration:
Switch# configure terminal
Switch(config)# vlan 20
Switch(config-vlan)# private-vlan primary
Switch(config-vlan)# exit
Switch(config)# vlan 501
Switch(config-vlan)# private-vlan isolated
Switch(config-vlan)# exit
Switch(config)# vlan 502
Switch(config-vlan)# private-vlan community
Switch(config-vlan)# exit
Switch(config)# vlan 503
Switch(config-vlan)# private-vlan community
Switch(config-vlan)# exit
Switch(config)# vlan 20
Switch(config-vlan)# private-vlan association 501-503
Switch(config-vlan)# end
Switch(config)# show vlan private vlan
Primary Secondary Type
------- --------- ----------------- ------------------------------------------
20
20
20
20
OL-8550-02
The secondary_vlan_list parameter cannot contain spaces. It can contain multiple comma-separated
items. Each item can be a single private-VLAN ID or a hyphenated range of private-VLAN IDs.
The secondary_vlan_list parameter can contain multiple community VLAN IDs but only one
isolated VLAN ID.
Enter a secondary_vlan_list, or use the add keyword with a secondary_vlan_list to associate
secondary VLANs with a primary VLAN.
Use the remove keyword with a secondary_vlan_list to clear the association between secondary
VLANs and a primary VLAN.
The command does not take effect until you exit VLAN configuration mode.
501 isolated
502 community
503 community
504 non-operational
Purpose
Verify the configuration.
Save your entries in the switch startup configuration file. To save the
private-VLAN configuration, you need to save the VTP transparent
mode configuration and private-VLAN configuration in the switch
startup configuration file. Otherwise, if the switch resets, it defaults to
VTP server mode, which does not support private VLANs.
Ports
Catalyst 3750 Switch Software Configuration Guide
Configuring Private VLANs
16-11