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Chapter 19 Port Security
XGS-4526/4528F/4728F User’s Guide
199
19.3 VLAN MAC Address Limit
Use this screen to set the MAC address learning limit on per-port and per-VLAN
basis. Click VLAN MAC Address Limit in the Advanced Application > Port
Security screen to display the screen as shown.
Figure 86 Advanced Application > Port Security > VLAN MAC Address Limit
Active Select this check box to enable the port security feature on this port. The
Switch forwards packets whose MAC address(es) is in the MAC address
table on this port. Packets with no matching MAC address(es) are
dropped.
Clear this check box to disable the port security feature. The Switch
forwards all packets on this port.
Address
Learning
MAC address learning reduces outgoing broadcast traffic. For MAC
address learning to occur on a port, the port itself must be active with
address learning enabled.
Limited
Number of
Learned MAC
Address
Use this field to limit the number of (dynamic) MAC addresses that may
be learned on a port. 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 must wait until one of the five
learned MAC addresses ages out. MAC address aging out time can be set
in the Switch Setup screen. The valid range is from “0” to “16384” in the
XGS-4728F and from “0” to “8192” in the XGS-4526 or XGS-4528F. “0”
means this feature is disabled.
Apply Click Apply to save 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 begin configuring this screen afresh.
Table 47 Advanced Application > Port Security (continued)
LABEL DESCRIPTION