Basic Switch Configuration; Switch Configuration - Ubiquiti EdgeSwitch ES-24-250W Administration Manual

EdgeSwitch Administration Guide
™

Basic Switch Configuration

The forwarding database maintains a list of MAC addresses after having received a packet from this MAC
address. The transparent bridging function uses the forwarding database entries to determine how to
forward a received frame.

Switch Configuration

Use the Switch Configuration page to set the amount of time to keep a learned MAC address entry in the
forwarding database, or to enable or disable flow control mode on the switch.
The forwarding database contains both static entries that are never aged out, and dynamically learned
entries that are removed if they are not updated within a specified time interval. The Switch Configuration
page allows you to specify this time interval for learned entries.
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 or congested switches to
communicate with higher-speed switches by sending a PAUSE frame to request that the higher-speed switch
refrain from sending packets. Transmissions are temporarily halted to prevent buffer overflows.
To access the Switch Configuration page, click System > Basic Configuration > Switch in the navigation menu.
Field
802.3x Flow Control Mode
MAC Address Aging Interval
Note: IEEE 802.1D recommends a default of 300 seconds, which is the factory default.
Use the buttons to perform the following tasks:
• If you make changes to the page, click Submit to apply the changes to the running configuration.
• Click Refresh to refresh the page with the most current data from the switch.
To retain the changes across the switch's next power cycle, click System > Configuration Storage > Save.
Ubiquiti Networks, Inc.
Switch Configuration
Switch Configuration Fields
Description
Used to Enable or Disable 802.3x flow control on the switch:
• Disable The switch does not send PAUSE frames if the port buffers become full.
• Enable The switch can send PAUSE frames to a peer device if the port buffers become full.
Used to specify the number of seconds a dynamic address should remain in the MAC address table
after it has been learned.
Configuring System Information
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