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24-port NWay Ethernet Switch User’s Guide
48 Using the Console Interface
The Configure Filtering and Forwarding Table screen allows you to allows you to stop or start address learning,
change the way the Switch treats MAC address table entries, and select an age-out time of the MAC address in the
selected address table. This screen also permits you to access three additional configuration screens from the menu at the
bottom of the screen.
Choose Configure Filtering and Forwarding Table from the Configuration menu to access the following screen:
Figure 6-20. Configure Filtering and Forwarding Table screen
The following fields at the top of the screen can be set:
♦ Lock Address Table (Stops Auto-Learning) 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 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, 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. Level 1 is the default.
♦ MAC Address Aging Enter the desired MAC address age-out time in this field (10 to 1000000 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.