Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 
Community Member

How to limit broadcast traffic to two PC's

We have a hardware appliance that behaves badly on the network.  It constantly sends broadcasts on port 45454 to announce its presence on the network.  We have only two possible clients for this appliance, on the same VLAN as the appliance. What is the best solution please to make sure that the traffic only reaches the intended receivers ?
What if we move the two PC's to another VLAN ?
Everyone's tags (1)
Super Bronze

DisclaimerThe Author of this


The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.


As they are broadcasts, your best option is pretty much what you've already mentioned, moving the devices to their own VLAN (you mention moving the two recipients, but you also want to move the source host too).

Community Member

Please go for a  private vlan

Please go for a  private vlan...if you want the 2 pc's to communicate with each other..(community vlan) communication needed (isolated vlan)

CreatePlease to create content