Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 856
DSCP Color Maps, Creating a DSCP Color Map
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Specifying an Aggregate QoS Policy To specify an aggregate QoS policy, use the following command. • Specify an aggregate QoS policy. POLICY-MAP-OUT mode policy-aggregate Applying an Output Policy Map to an Interface To apply an output policy map to an interface, use the following command. • Apply an input policy map to an interface. INTERFACE mode service-policy output You can apply the same policy map to multiple interfaces, and you can modify a policy map after you apply it. DSCP Color Maps This section describes how to configure color maps and how to display the color map and color map configuration. This sections consists of the following topics: • Creating a DSCP Color Map • Displaying Color Maps • Display Color Map Configuration Creating a DSCP Color Map You can create a DSCP color map to outline the differentiated services codepoint (DSCP) mappings to the appropriate color mapping (green, yellow, red) for the input traffic. The system uses this information to classify input traffic on an interface based on the DSCP value of each packet and assigns it an initial drop precedence of green, yellow, or red The default setting for each DSCP value (0-63) is green (low drop precedence). The DSCP color map allows you to set the number of specific DSCP values to yellow or red. Traffic marked as yellow delivers traffic to the egress interface, which will either transmit or drop the packet based on configured queuing behavior. Traffic marked as red (high drop precedence) is dropped. Important Points to Remember • All DSCP values that are not specified as yellow or red are colored green (low drop precedence). • A DSCP value cannot be in both the yellow and red lists. Setting the red or yellow list with any DSCP value that is already in the other list results in an error and no update to that DSCP list is made. • Each color map can only have one list of DSCP values for each color; any DSCP values previously listed for that color that are not in the new DSCP list are colored green. 856 Quality of Service (QoS)
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