Cos Interface Queue Drop Precedence Configuration - Ubiquiti EdgeSwitch ES-24-250W Administration Manual

EdgeSwitch Administration Guide
™

CoS Interface Queue Drop Precedence Configuration

Use this page to configure the queue drop precedence on a per-queue, per-interface basis. When an
interface is configured with taildrop queue management, all packets on a queue are safe until congestion
occurs. If congestion occurs, any additional packets queued are dropped. Weighted Random Early Detection
(WRED) drops packets selectively based their drop precedence level.
To display the CoS Interface Queue Drop Precedence Configuration page, click QoS > Class of Service > Drop
Precedence in the navigation menu.
Field
Interface
Queue ID
Drop Precedence Level
WRED Minimum Threshold
WRED Maximum Threshold
WRED Drop Probability Scale
Use the buttons to perform the following tasks:
edit the settings on an interface, select the entry from table, and click Edit. When you have
• To
completed the changes, click Submit
• Click Restore Defaults to restore all drop precedence settings on the selected interface to the default
values. If Global is selected in the Interface field, all default settings for all interfaces are restored.
• 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.
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CoS Interface Queue Drop Precedence Configuration
CoS Interface Queue Drop Precedence Configuration Fields
Description
The interface on which to configure the queue drop precedence settings. To configure the same
settings on all interfaces, select the Global menu option.
The CoS queue on which to configure the drop precedence settings. The higher the queue value, the
higher its priority is for sending traffic.
The four drop precedence levels.
The minimum queue threshold below which now packets are dropped for the associated drop
precedence level. After the minimum is reached, WRED randomly drops packets based on their priority
(DSCP or IP precedence). This setting applies to the interface if it is configured with a WRED queue
management type.
The maximum queue threshold above which all packets are dropped for the associated drop
precedence level. After the maximum is reached, WRED drops all packets based on their priority
(DSCP or IP precedence). This setting applies to the interface if it is configured with a WRED queue
management type.
The packet drop probability for the drop precedence level. This setting applies to the interface if it is
configured with a WRED queue management type.
to apply the changes.
Configuring Quality of Service
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