Creating Wred Profiles; Applying A Wred Profile To Traffic - Dell Z9000 Configuration Manual

10/25/40/50/100gbe throughput

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Figure 96. 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.

Create a WRED profile.

CONFIGURATION mode

wred-profile

Specify the minimum and maximum threshold values.

After you create a WRED profile, you must specify to which traffic Dell Networking OS should apply the

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

DP values of 110 and 100, 101 map to yellow; all other values map to green.

If you do not configure Dell Networking OS to honor DSCP values on ingress (refer to

Values on Ingress

Packets), all traffic defaults to green drop precedence.

Assign a WRED profile to either yellow or green traffic.

QOS-POLICY-OUT mode

Quality of Service (QoS)

Honoring DSCP