User`s guide

Chapter 19 Port Security
XS1920 Series User’s Guide
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Limit Number Use this field to limit the number of (dynamic) MAC addresses that may be learned on a
port in a specified VLAN. For example, if you set this field to "5" on port 2, then only the
devices with these five learned MAC addresses may access port 2 at any one time. A sixth
device would have to wait until one of the five learned MAC addresses aged out. MAC
address aging out time can be set in the Switch Setup screen. The valid range is from “0”
to “16K”. “0” means this feature is disabled.
Add Click this to create a new entry or to update an existing one.
This saves your changes to the Switch’s run-time memory. The Switch loses these changes
if it is turned off or loses power, so use the Save link on the top navigation panel to save
your changes to the non-volatile memory when you are done configuring.
Cancel Click Cancel to reset the fields to your previous configuration.
Clear Click Clear to reset the fields to the factory defaults.
Index This field displays the index number of the rule. Click an index number to change the
settings.
Active This field displays Yes when the rule is activated and No when is it deactivated.
Port This field displays the number of the port to which this rule is applied.
VID This is the VLAN ID number to which the port belongs.
Limit Number This is the maximum number of MAC addresses which a port can learn in a VLAN.
Delete Check the rule(s) that you want to remove in the Delete column and then click the Delete
button.
Cancel Click Cancel to clear the selected checkbox(es) in the Delete column.
Table 68 Advanced Application > Port Security > VLAN MAC Address Limit (continued)
LABEL DESCRIPTION