Your software release may not support all the features documented in this module. For the latest feature
information and caveats, see the release notes for your platform and software release.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to

http://www.cisco.com/go/cfn

. An account on Cisco.com is not

required.

Prerequisites for Private VLANs

The following are prerequisites for configuring private VLANs:

• When you configure private VLANs on switches running VTP, the switch must be in VTP transparent

mode.

• When configuring private VLANs on the switch, always use the default Switch Database Management

(SDM) template to balance system resources between unicast routes and Layer 2 entries. If another SDM

Catalyst 2960-XR Switch VLAN Configuration Guide, Cisco IOS Release 15.0(2)EX1

OL-29440-01