Dell S4048T, Configuration Manual

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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.
• If you configured a DSCP color map on an interface that does not exist or you delete a DSCP color map
that is configured on an interface, that interface uses an all green color policy.
To create a DSCP color map:
1 Create the color-aware map QoS DSCP color map.
CONFIGURATION mode
qos dscp-color-map color-map-name
2 Create the color aware map profile.
DSCP-COLOR-MAP
dscp {yellow | red} { list-dscp-values }
Quality of Service (QoS) 849