Switch Configuration

Use the Switch Configuration page to set the amount of time to keep a learned MAC address entry in the forwarding database. The forwarding database contains static entries, which are never aged out, and dynamically learned entries, which are removed if they are not updated within a given time.

To access this page, click System > Basic Configuration > Switch in the navigation menu.

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Switch Configuration Fields

Field Description
802.3x Flow Control Mode Enable or disable 802.3x flow control on the switch. IEEE 802.3x flow control works by pausing a port when the port becomes oversubscribed. It also allows a port to drop all traffic for small bursts of time during the congestion condition. This can lead to high-priority and/or network control traffic loss. When enabled, flow control allows lower speed switches to communicate with higher-speed switches by requesting that the higher-speed switch refrain from sending packets. Transmissions are temporarily halted to prevent buffer overflows.
MAC Address Aging Interval The MAC address table (forwarding database) contains static entries, which never age out, and dynamically-learned entries, which are removed if they are not updated within a given time. Specify the number of seconds a dynamic address should remain in the MAC address table after it has been learned.


IEEE 802.1D recommends a default of 300 seconds, which is the factory default.

If you change any of the parameters, click Submit to apply the changes to the system. If you want the switch to retain the new values across a power cycle, you must save the configuration.