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Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-07
Chapter 12      Configuring Private VLANs
Configuring Private VLANs
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              Ports
------- --------- ----------------- ------------------------------------------
20      501       isolated          
20      502       community         
20      503       community         
20      504       non-operational
Configuring a Layer 2 Interface as a Private-VLAN Host Port
Beginning in privileged EXEC mode, follow these steps to configure a Layer 2 interface as a 
private-VLAN host port and to associate it with primary and secondary VLANs:
Note Isolated and community VLANs are both secondary VLANs.
This example shows how to configure an interface as a private-VLAN host port, associate it with a 
private-VLAN pair, and verify the configuration:
Switch# configure terminal 
Switch(config)# interface fastethernet0/22 
Switch(config-if)# no shutdown
Switch(config-if)# switchport mode private-vlan host 
Switch(config-if)# switchport private-vlan host-association 20 501 
Switch(config-if)# end 
Switch# show interfaces fastethernet0/22 switchport 
Name: Fa0/22
Switchport: Enabled
Administrative Mode: private-vlan host
Operational Mode: private-vlan host
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: native
Negotiation of Trunking: Off
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id  Enter interface configuration mode for the Layer 2 
interface to be configured.
Step 3
no shutdown Enable the port, if necessary. By default, UNIs and ENIs 
are disabled, and NNIs are enabled.
Step 4
switchport mode private-vlan host  Configure the Layer 2 port as a private-VLAN host port. 
Step 5
switchport private-vlan host-association 
primary_vlan_id secondary_vlan_id 
Associate the Layer 2 port with a private VLAN. 
Step 6
end  Return to privileged EXEC mode.
Step 7
show interfaces [interface-id] switchport  Verify the configuration.
Step 8
copy running-config startup config (Optional) Save your entries in the switch startup 
configuration file.