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24 Port Stackable Managed Switch – User Guide Page 31
Misc Configuration
This menu is selected from the Switch Configuration menu screen and enables configuration
of the remaining Switch-specific variables such as MAC Ageing time, Broadcast Storm,
Stacking mode etc.
Figure 29. Misc Configuration Screen
MAC Address Aging Time
This setting specifies the time that a dynamic MAC address can remain in the Switch tables
before the value is “aged out”. The valid range is 300 to 765 seconds. The default value is
300 seconds, which is the industry standard duration. This value rarely needs to be modified.
Broadcast Storm Filter
This is used to limit the number of packets flowing through the Switch that do not have
associated entries in the Switch tables (Destination Look-Up Failures) or excessive broadcast
transmissions. In some instances, this high level of DLF/broadcast traffic can degrade
network performance. To minimize this problem, the Switch can be programmed to limit the
amount of broadcast traffic that can flow through the Switch. In normal networks, only a few
percent of traffic would normally be broadcasts.
This mode is accessed from the Misc. Configuration screen and is changed by selecting
<edit> from the action line and then using <tab> key for navigation to Broadcast Storm field.
Use the <spacebar> to step through the valid thresholds:
• N/A (Disabled)
• 5%
• 10%
• 15%
• 20%
• 25%
The default value is 5%. After the required threshold value has been selected, use the <esc>
key to return to the action line and then select <apply> to store the value.
Product Number 0-1591099-x © Tyco Electronics 2005 Issue 1