Installation manual

4-148
SIGNAMAX LLC • www.signamax.eu
Command Usage
• If you enable port security, the switch stops learning new MAC addresses on the
specified port when it has reached a configured maximum number. Only incoming
traffic with source addresses already stored in the dynamic or static address table
will be accepted.
•Use the port security command to enable security on a port. Then use the port
security action command to set the response to a port security violation, and the
port security max-mac-count command to set the maximum number of
addresses allowed on a port.
• You can also manually add secure addresses with the mac-address-table static
command.
• A secure port has the following restrictions:
- Cannot be connected to a network interconnection device.
- Cannot be a trunk port.
• If a port is disabled due to a security violation, it must be manually re-enabled using
the no shutdown command.
Example
The following example enables port security for port 5, and sets the response to a
security violation to issue a trap message:
Related Commands
shutdown (4-192)
mac-address-table static (4-212)
show mac-address-table (4-214)
Console(config)#interface ethernet 1/5
Console(config-if)#port security
Console(config-if)#port security action trap
Console(config-if)#