Comments on: Configure Cisco Port Security on Switches and Router interface

By: Babiano

Babiano — Sat, 06 Aug 2011 19:53:57 +0000

@ashish ive had also encountered the same problem before, but i found out that you have to activate 1st the port-security by typing this.. switchport port-security..

Best wishes to everyone here!! ^_^

By: Ashish

Ashish — Thu, 14 Jul 2011 06:54:27 +0000

why i get this

Port-security not enabled on interface FastEthernet0/1

what should i do

By: Vicky

Vicky — Mon, 09 May 2011 07:21:04 +0000

this article hepls alot, thanks.

i did conf like

Switch# conf t
Switch(config)# interface fastethernet 0/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport port-security

Chekc mac of your computer using ipconfig /all command or getmac command , eg mac is 1111.2222.3333

Switchport(config-if)# switchport port-security mac-address 1111.2222.3333

in packet tracer , it takes 2-5 min to shut the desired port so have patient to c the result.

By: Ayanaw Hagos

Ayanaw Hagos — Wed, 08 Sep 2010 05:58:10 +0000

Could you please help me,
I configured port security to the switch port
switchport access vlan ###
switchport mode access
swtichport port-security
switchport port-security mac-address sticky
shut
no shut.

After I cleared the port-security, I use show mac-address | include mac-address to check if the mac-address in the multiple switch ports, it is only show the port address I am working on it. every time I unable port security, the error-disable clear up, and the port is up. when I put the port security back, the error-disable come up, I check the fiber with know good to double check the problems, I didn’t change the NIC card yet, but I ping 127.0.0.1 to check the NIC cards, the NIC card is good. Please help me.

By: Usman

Usman — Wed, 12 May 2010 14:58:43 +0000

how can one configure multiple mac add on all the switch ports?

By: Iain Harper

Iain Harper — Tue, 11 May 2010 08:32:00 +0000

Can the same mac addresses be put onto a number of ports on a cisco 2950 & 3750 switch.

By: Hari

Hari — Mon, 19 Apr 2010 12:09:40 +0000

Cool info provided.Thxn so much…

By: JOE

JOE — Wed, 16 Dec 2009 15:37:45 +0000

To enable shutdown the port and then give “no shut”. also ensure that the unwanted device has been removed from the port.

By: rohjit

rohjit — Wed, 25 Nov 2009 07:39:21 +0000

nice solution but how can i enable the errordisable port state.

By: siowlim

siowlim — Sat, 07 Nov 2009 07:37:43 +0000

Whoever use Boson simulator are warned that Bosn simulator is full of bugs. I have personal owned one, it is completely useless and decepful for Cisco learners. As a student you probably have trusted it. Unfortunately it is just opposite of what you thought it was. Anyone who reads this, please warn your friends not to waste the money and time getting Boson simulator.