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Gigabit Ethernet Switch User's Guide
The following fields at the top of the screen can be set:
Lock Address Table (Stops Auto-Learning) This function is used mostly 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 coming from an unknown source 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, and 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-out Time Enter the desired MAC address age-out time in this field (10 to 1000000
seconds) .
Configure Static Forwarding Table
The Static Forwarding Table screen displays a list of manually defined static MAC address entries.
To access the Static Forwarding Table 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:
Figure 6-19. Configure Filtering and Forwarding Table screen
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