D-Link DES-3250TG - Manual (Page 77)

D-Link DES-3250TG Standalone Layer 2 Switch
Port Security Settings
A given port’s (or a range of ports’) dynamic MAC address learning can be locked such that the current source MAC addresses
entered into the MAC address forwarding table can not be changed once the port lock is enabled. The port can be locked by
changing the Admin State pull-down menu to Enabled, and clicking Apply.
Figure 7- 30. Port Security Settings window
The following fields can be set:
Parameter Description
From & To Use this to specify a consecutively numbered
group of ports on the switch for configuration
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