Users Guide

Figure 104. Packet Drop Rate for WRED
You can create a custom WRED profile or use one of the five pre-defined profiles.
Creating WRED Profiles
To create WRED profiles, use the following commands.
1 Create a WRED profile.
CONFIGURATION mode
wred-profile
2 Specify the minimum and maximum threshold values.
WRED mode
threshold
Applying a WRED Profile to Traffic
After you create a WRED profile, you must specify to which traffic Dell Networking OS should apply the
profile.
Dell Networking OS assigns a color (also called drop precedence) — red, yellow, or green — to each packet
based on it DSCP value before queuing it.
DSCP is a 6–bit field. Dell Networking uses the first three bits (LSB) of this field (DP) to determine the drop
precedence.
• DP values of 110 and 100, 101 map to yellow; all other values map to green.
Quality of Service (QoS) 789