Learn Cisco Port Security the right way. In this CCNA-focused lesson I show you:
1) How switches learn MAC addresses: dynamic, static and sticky
2) Where each option stores the address (MAC table vs running config)
3) Default limits (max 1 MAC) and violation mode (shutdown)
4) What protect vs restrict vs shutdown really do, with real CLI outputs
5) Exactly which commands to run (switchport port-security, sticky, show commands)
If you’re prepping for CCNA or locking down access ports, this walkthrough will save you time and lab frustration.
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// MENU //
0:00 – Enabling Port Security
01:36 – Allowed MAC Addresses
03:00 – Renewing IP Addresses on the PC
03:27 – Dynamic Secure MAC Addresses Do Not Age Out by Default
03:45 – Dynamic MAC Addresses Are Not Stored in the Running Configuration
05:47 – Configuring MAC Addresses on a Port
06:20 – Understanding MAC Addresses
06:38 – Sticky Secure MAC Addresses
08:47 – The Difference with Dynamic MAC Addresses
09:41 – What Happens When There Is a Violation?
10:27 – Conclusion
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Disclaimer: This video is for educational purposes only.
#cisco #ccna #portsecurity
