Network Card User Manual

C OMMAND L INE I NTERFACE
3-84
port security
Use this command to configure a secure port. Use the no form to disable
port security.
Syntax
port security
no port security
Default Setting
All port security is disabled.
Command Mode
Interface Configuration (Ethernet)
Command Usage
• When port security is enabled, the selected port will stop learning
MAC addresses. This prevents unauthorized access to the switch.
The MAC addresses aefmady in the address table will be retained and
will not age out.
• A secure port has the following restrictions:
- Cannot use port monitoring.
- Cannot be a multi-VLAN interface.
- Cannot be connected to a network interconnection device.
- Cannot be a trunk port.
Example
This example enables port security for port 5.
Console(config)# interface ethernet 1/5
Console(config-if)# port security
Console(config-if)#