Q. What is a VLAN?

VLAN is a logical configuration of a N/W on switch port to segment the IP traffic. Using VLANs reduces hardware needs by allowing a switch to segment IP traffic into multiple IP subnets on a prt by port configuration.

  1. VLAN’s allow IP subnets to extend beyond the distance limitations of the physical medium.
  2. A trunk port is a port that has knowledge of all VLANs configured.

Example:- The port that connects each switch to the nearest route is configured as a trunk port.

How to make PVLANs or can distribute a primary VLAN into multiple subdivisions of secondary PVLANs?

Right click on DvSwitch – Edit Settings – Private VLANs

Enter or edit primary private VLAN IDEnter or edit a secondary Private VLAN ID and type
Enter a private vlan ID here 100 and enter100 ( enter a private vlan ID here) promiscuous mode ( select)


let’s say you have put 100 in L.H.S so in R.H.S after selecting 100 it is automatically taken by default in promiscuous mode as this is the first VLAN. Then in R.H.s 102, 103 and select the isolated mode for 102, community for 103.

After configuring private VLANs here. click on DVport group – edit settings – VLAN – select private VLANs and this will show all the secondary PVLANs in the drop down menu. the options are – Promiscuous ( 100, 100)

Isolated ( 100, 102)

Community (100, 103) enter.

As 100 is the primary VLAN ID and PVLAN IDs are ( 100,102) and (100, 103).

Now you can check that the DVPort group is from community port group. You can check click on DVPort groups – R.H.S ports, then check VLAN ID.