Create A Qos Policy - Dell S4048–ON Configuration Manual

S-series 10gbe switches

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The following example shows correct traffic classifications.

Dell#show cam layer3-qos interface tengigabitethernet 2/4

Port Dscp Proto Tcp

-------------------------------------------------------------------------

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.

Layer 3 — QoS input policies allow you to rate police and set a DSCP or dot1p value. In addition, you can configure a drop

precedence for incoming packets based on their DSCP value by using a DSCP color map. For more information, see

Layer 2 — QoS input policies allow you to rate police and set a dot1p value.

Output QoS policies regulate egress traffic. The regulation mechanisms for output QoS policies are bandwidth percentage, scheduler

strict, 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.

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.

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

Flag Port Port

23.64.0.5/32 0.0.0.0/0 20

23.64.0.2/32 0.0.0.0/0 10

23.64.0.3/32 0.0.0.0/0 12

0.0.0.0/0 14

Quality of Service (QoS)

Create A Qos Policy - Dell S4048–ON Configuration Manual

Create a QoS Policy

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