D-Link DES-6000 User Manual page 58

Modular Ethernet Switch User's Guide
The following fields at the top of the screen can be set:
♦ Lock Address Table Mostly used for security purposes, when the forwarding table is locked the Switch
will no longer learn the MAC addresses for new hosts. If your network configuration doesn't change,
locking the forwarding table helps keep intruders off your network since any packet destined for an
unknown MAC address will be dropped by the Switch.
♦ Address Table Lookup Mode This setting allows the user to tailor the MAC address look up procedure.
Choices are Level 0, Level 1, Level 2, Level 3, Level 4, Level 5, Level, 6, Level 7. The higher the level, the
more MAC addresses can be learned by the Switch. However, a side effect is that throughput will be
degraded the higher the level you select. This setting will take effect after your system reboots.
♦ MAC Address Age Time Enter the desired MAC address age-out time in this field (10 to 9999 seconds).
Please refer to the Packet Forwarding section of the "Switch Management Concepts" chapter of this manual
for more detailed information.
Configure Static Forwarding Table
The Static Forwarding Table displays a list of manually defined static MAC address entries. When the Switch
receives a packet with a specified MAC address in its destination field, it will always forward the packet to the
specified port. These entries will never age-out.
To access the Static Forwarding Table Configuration screen, choose Configure Filtering and
Forwarding Table from the System Configuration menu. Then select Configure Static Forwarding
Table from the bottom of the Configure Filtering and Forwarding Table screen. The following screen
appears:
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Figure 6-20. Configure Filtering and Forwarding Table screen
Using the Console Interface