Port Security: Sticky MAC, Allowed MACs & Violation Explained | Cisco Switch |
Welcome to Tungabadra Networks!
In this video, we continue our Cisco Port Security lab by focusing on:
✅ Sticky MAC address configuration
✅ Limiting the number of allowed MAC addresses
✅ Understanding port security violations and shutdown behavior
🖥 Lab Device: Cisco Catalyst 2960
📍 Interface Used: fa0/22
📌 Security Mode: Shutdown
📌 Max MACs Allowed: 1
📌 Sticky MAC Captured Automatically
🛠️ Commands Used:
IND_SW2# configure terminal
IND_SW2(config)# interface fa0/1
IND_SW2(config-if)# switchport mode access
IND_SW2(config-if)# switchport port-security
IND_SW2(config-if)# switchport port-security maximum 1
IND_SW2(config-if)# switchport port-security violation shutdown
IND_SW2(config-if)# switchport port-security mac-address sticky
✅ Verification Command:
IND_SW2# show port-security interface fa0/22
📌 Output Explained:
Port Status shows if the port is shut due to violation
Sticky MAC Address shows learned MACs
Violation Count shows how many times an unauthorized device was detected
📢 Stay tuned for the next video, where we'll show you how to manually configure static MACs and recover from port shutdowns!
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