Tasks For Configuring Private Vlans; Default Private-Vlan Configuration; Private-Vlan Configuration Guidelines; Secondary And Primary Vlan Configuration - Cisco Catalyst 3750-X Software Configuration Manual

Configuring Private VLANs

Tasks for Configuring Private VLANs

To configure a private VLAN, perform these steps:
Set VTP mode to transparent.
Step 1
Create the primary and secondary VLANs and associate them. See the
Step 2
VLANs in a Private VLAN" section on page
Note
Configure interfaces to be isolated or community host ports, and assign VLAN membership to the host
Step 3
port. See the
Configure interfaces as promiscuous ports, and map the promiscuous ports to the primary-secondary
Step 4
VLAN pair. See the
page
If inter-VLAN routing will be used, configure the primary SVI, and map secondary VLANs to the
Step 5
primary. See the
page
Verify private-VLAN configuration.
Step 6

Default Private-VLAN Configuration

No private VLANs are configured.

Private-VLAN Configuration Guidelines

Guidelines for configuring private VLANs fall into these categories:
•
•
•

Secondary and Primary VLAN Configuration

Follow these guidelines when configuring private VLANs:
•
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
18-6
If the VLAN is not created already, the private-VLAN configuration process creates it.
"Configuring a Layer 2 Interface as a Private-VLAN Host Port" section on page
"Configuring a Layer 2 Interface as a Private-VLAN Promiscuous Port" section on
18-12.
"Mapping Secondary VLANs to a Primary VLAN Layer 3 VLAN Interface" section on
18-13.
Secondary and Primary VLAN Configuration, page 18-6
Private-VLAN Port Configuration, page 18-8
Limitations with Other Features, page 18-8
If the switch is running VTP version 1 or 2, you must set VTP to transparent mode. After you
configure a private VLAN, you should not change the VTP mode to client or server. For information
about VTP, see Chapter 16, "Configuring VTP."
modes.
Chapter 18
"Configuring and Associating
18-9.
VTP version 3 supports private VLANs in all
Configuring Private VLANs
18-11.
OL-21521-01