T2600G/Security/Port Security

You can limit the number of MAC addresses that can be learned on each port on this page, thus preventing the MAC address table from being exhausted by the attack packets.

Port Security

Port

Select one or more ports to configure.

Max Learned Number of MAC

Specify the maximum number of MAC addresses that can be learned on the port. When the learned MAC address number reaches the limit, the port will stop learning.

Current Learned Number

Displays the number of MAC addresses that have been learned on the port.

Exceed Max Learned Trap

Enable Exceed Max Learned Trap, and when the maximum number of learned MAC addresses on the specified port is exceeded, a notification will be generated and sent to the management host.

Learn Address Mode

Select the learn mode of the MAC addresses on the port. Three modes are provided:

Delete on Timeout

The switch will delete the MAC addresses that are not used or updated within the aging time. It is the default setting.

Delete on Reboot

The learned MAC addresses are out of the influence of the aging time and can only be deleted manually. The learned entries will be cleared after the switch is rebooted.

Permanent

The learned MAC addresses are out of the influence of the aging time and can only be deleted manually. The learned entries will be saved even the switch is rebooted.

Status

Select the status of Port Security. Three kinds of status can be selected.

Forward

When the number of learned MAC addresses reaches the limit, the port will stop learning but send the packets with the MAC addresses that have not been learned.

Drop

When the number of learned MAC addresses reaches the limit, the port will stop learning and discard the packets with the MAC addresses that have not been learned.

Disable

The number limit on the port is not effective, and the switch follows the original forwarding rules. It is the default setting.