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1. In the left navigation bar, click Advanced Setup > Quality Of Service > QoS Config. The following page appears.
2. If the Enable QoS checkbox is not checked, click it to select it.
Warning: If this option is already enabled and you clear the checkbox, QoS will be disabled for ALL interfaces.
3. In the Select Default DSCP Mark field, select the Differentiated Services Code Point (DSCP) Mark classification value to be
used. The default is No Change(-1). For a list of supported values, see "Supported DSCP Values".
4. Click Apply/Save to save your settings.
Supported DSCP Values
The DSCP marking QoS Queue Management Configuration marking on ingress packets is based on the selection you make in the Select
Default DSCP Mark field. The selected default marking is applied automatically to all incoming packets without reference to a par-
ticular classification.
Note: A default DSCP mark value of Default(000000) will mark all egress packets that do NOT match any classification.
The following values are supported. For more information about commonly used DSCP values, refer to RFC 2475.
No Change(-1) CS1(001000) AF32(011100) CS4(100000)
Auto Marking(-2) AF23(010110) AF31(011010) EF(101110)
Default(000000) AF22(010100) CS3(011000) CS5(101000)