Creating Wred Profiles; Applying A Wred Profile To Traffic - Dell S4048–ON Configuration Manual

Figure 115. Packet Drop Rate for WRED
You can create a custom WRED profile or use one of the five pre-defined profiles.
Table 75. Pre-Defined WRED Profiles
Default Profile Name
wred_drop
wred_teng_y
wred_teng_g
wred_fortyg_y
wred_fortyg_g

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.
694
Quality of Service (QoS)
Minimum Threshold
0
467
467
467
467
Maximum Threshold
0
4671
4671
4671
4671
Maximum Drop Rate
100
100
50
50
25