How to create a fake VLAN

Unanswered Question
Jul 10th, 2007

All, can you tell me how to create a fake VLAN, that if a end device was plugged into the switch, it wouldnt go anywhere?

I have this problem too.
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royalblues Tue, 07/10/2007 - 08:55

Create a VLAN but do not create any corresponding SVI for that VLAN.

THis way the VLANS will not have any gateway and will not work


If you are worried about someone plugging into an unused port on a switch and gaining access to your network, would it not be better, safer and more manageable to shut the interface? However, physical access is access. They can unplug any in use port and access the network. To do it differently, you would need a NAC.

Amit Singh Tue, 07/10/2007 - 09:14

I agree with Narayan on this to create a vlan and donot create a corresponding SVI. Also, make sure that you donot assign any ports to Vlan1, which is default vlan and all the ports belong to it.

Please use the link for Vlan security and more info on this:

HTH,Please rate it it does.

-amit singh


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