Create A Qos Policy - Dell Z9000 Configuration Manual

Create a QoS Policy

There are two types of QoS policies — input and output.
Input QoS policies regulate Layer 3 and Layer 2 ingress traffic. The regulation mechanisms for input QoS
policies are rate policing and setting priority values.
Output QoS policies regulate egress traffic. The regulation mechanisms for output QoS policies are rate
limiting, rate shaping, and WRED.
NOTE: When changing a "service-queue" configuration in a QoS policy map, all QoS rules are
deleted and re-added automatically to ensure that the order of the rules is maintained. As a result,
the Matched Packets value shown in the show qos statistics command is reset.
NOTE: To avoid issues misconfiguration causes, Dell Networking recommends configuring either
DCBX or Egress QoS features, but not both simultaneously. If you enable both DCBX and Egress
QoS at the same time, the DCBX configuration is applied and unexpected behavior occurs on the
Egress QoS.
Creating an Input QoS Policy
To create an input QoS policy, use the following steps.
1. Create a Layer 3 input QoS policy.
CONFIGURATION mode
qos-policy-input
Create a Layer 2 input QoS policy by specifying the keyword layer2 after the qos-policy-input
command.
2. After you create an input QoS policy, do one or more of the following:
Configuring Policy-Based Rate Policing
Setting a dot1p Value for Egress Packets
Configuring Policy-Based Rate Policing
To configure policy-based rate policing, use the following command.
• Configure rate police ingress traffic.
QOS-POLICY-IN mode
rate-police
Setting a dot1p Value for Egress Packets
To set a dot1p value for egress packets, use the following command.
• Set a dot1p value for egress packets.
QOS-POLICY-IN mode
set mac-dot1p
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Quality of Service (QoS)