Unable to clear port-security sticky

Answered Question
Oct 16th, 2008

Hi all,

I am using the command:

switchport port-security mac-address sticky to set port security.

On one of my IOS switch I am unable to clear the sticky MAC address using the command:

clear port-security sticky int fa 0/1.

Is there another way to achieve without having to upgrade IOS?

Thanks.

Correct Answer by julieglass about 8 years 4 months ago

simply put 'no' in front of that command

no switchport port-security mac-address sticky [mac-address]

it will clear the captured mac

Correct Answer by Hieu Cao about 8 years 4 months ago

The command given by Earnest basically removes the previously set/seen mac-add in that switch port.

Your port security is still enabled though provided that you've this command "switchport port-security" in place.

The port security sticky option is still enabled if you have this command "switchport port-security mac-address sticky" in the switch port.

Correct Answer by edunn@mtm.com about 8 years 4 months ago

Yopu can do a show run for the port. The mac address show show up on the port. It should look like this: switchport port-security mac-address 0000.0000.0003. Just run a no switchport port-security mac-address 0000.0000.0003. That should do the trick.

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Correct Answer
edunn@mtm.com Thu, 10/16/2008 - 07:35

Yopu can do a show run for the port. The mac address show show up on the port. It should look like this: switchport port-security mac-address 0000.0000.0003. Just run a no switchport port-security mac-address 0000.0000.0003. That should do the trick.

ece344609_2 Fri, 10/17/2008 - 08:56

Thanks Ernest.

What exactly will that command do? I dont want to shut off port security, just wanted to clear the MAC address so the port does not shutdown when the next machine is plugged in.

Correct Answer
Hieu Cao Fri, 10/17/2008 - 09:47

The command given by Earnest basically removes the previously set/seen mac-add in that switch port.

Your port security is still enabled though provided that you've this command "switchport port-security" in place.

The port security sticky option is still enabled if you have this command "switchport port-security mac-address sticky" in the switch port.

Correct Answer
julieglass Fri, 10/17/2008 - 10:22

simply put 'no' in front of that command

no switchport port-security mac-address sticky [mac-address]

it will clear the captured mac

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