Cisco WS-C3750-48PS-S User Manual

15-12
Catalyst 3750 Switch Software Configuration Guide
78-16180-02
Chapter 15 Configuring Private VLANs
Configuring Private 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 fastethernet 1/0/22
Switch(config-if)# switchport mode private-vlan host
Switch(config-if)# switchport private-vlan host-association 20 25
Switch(config-if)# end
Switch# show interfaces fastethernet 1/0/22 switchport
Name: Fa1/0/22
Switchport: Enabled
Administrative Mode: private-vlan host
Operational Mode: private-vlan host
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Negotiation of Trunking: Off
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: 20 (VLAN0020) 25 (VLAN0025)
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan:
20 (VLAN0020) 25 (VLAN0025)
<output truncated>
Step 3
switchport mode private-vlan host Configure the Layer 2 port as a private-VLAN host port.
Step 4
switchport private-vlan host-association
primary_vlan_id secondary_vlan_id
Associate the Layer 2 port with a private VLAN.
Step 5
end Return to privileged EXEC mode.
Step 6
show interfaces [interface-id] switchport Verify the configuration.
Step 7
copy running-config startup config (Optional) Save your entries in the switch startup
configuration file.
Command Purpose

Cisco WS-C3750-48PS-S Specifications

General

Brand	Cisco
Model	WS-C3750-48PS-S
Category	Switch
Language	English