Jon Marshall Tue, 08/03/2010 - 08:03
User Badges:
  • Super Blue, 32500 points or more
  • Hall of Fame,

    Founding Member

  • Cisco Designated VIP,

    2017 LAN, WAN

The configuration documents for the specific switch will show you how to do this. What is the switch model you are using ?


Sebastian Helmer Tue, 08/03/2010 - 08:25
User Badges:
  • Silver, 250 points or more


first privat vlans are only possible in vtp mode transparent.

- create a primary vlan (vlan A; private-vlan primary)

- Optional you can create a isolated or community vlan and associate it with the primary (vlan B ;private-vlan isolated or private-vlan        community;Enter primary vlan config mode and use private-vlan association [addremove] secondary_vlan_list)

To verify use:

show vlan private-vlan [type]


show interfaces status

please look here to find the neccesarry commands in detail for 3750:


This Discussion