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DES-7200 Configuration Guide Chapter 2 MAC Address Configuration
2-12
filtering address is stored in the configuration file and will not be lost even if the
device restarts.
If you want the device to filter some invalid users, you can specify their source
MAC addresses as filtering addresses. Consequently, these invalid users
cannot communicate with outside through the device.
Caution
A filtering address is invalid for the packets sent to the CPU. For
example, the L2 source MAC address for an ARP packet is a
filtering address, this ARP packet can still be sent to the CPU,
but can not be forwarded.
2.1.7 MAC Address
Change
Notification
The MAC address notification function is an effective way to let you know user
changes for the devices in a network.
Figure-13 MAC address Change Notification
After the MAC address change notification is enabled, the MAC address change
notification infornation is generated and sent in the SNMP Trap message form
to the specified NMS when the switch learns a new MAC address or ages out a
learned MAC address.
The notification about adding a MAC address lets you know a newcomer
(identified by the MAC address) is using the device. The notification about
deleting a MAC address (in the case of that the user did not communicate with
the device within the aging time) lets you know that a user does not use the
device any more.