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FTOS Configuration Guide for the C-Series - Force10 Networks

FTOS Configuration Guide for the C-Series - Force10 Networks

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Display configured class maps and match criteria<br />

Display all class-maps or a specific class map using <strong>the</strong> command show qos class-map from EXEC<br />

Privilege mode.<br />

Create a QoS Policy<br />

There are two types of QoS policies: input and output.<br />

Input QoS policies regulate Layer 3 and Layer 2 ingress traffic. The regulation mechanisms <strong>for</strong> input QoS<br />

policies are rate policing and setting priority values. There are two types of input QoS policies: Layer 3 and<br />

Layer 2.<br />

• Layer 3 QoS input policies allow you to rate police and set a DSCP or dot1p value.<br />

• Layer 2 QoS input policies allow you to rate police and set a dot1p value.<br />

Output QoS policies regulate Layer 3 egress traffic. The regulation mechanisms <strong>for</strong> output QoS policies<br />

are rate limiting, rate shaping, and WRED.<br />

Create an input QoS policy<br />

Layer 3 input QoS policies are supported on plat<strong>for</strong>ms: c e s<br />

Layer 2 input QoS policies is supported only on plat<strong>for</strong>m e<br />

To create an input QoS policy:<br />

1. Create a Layer 3 input QoS policy using <strong>the</strong> command qos-policy-input from CONFIGURATION<br />

mode. Create a Layer 2 input QoS policy by specifying <strong>the</strong> keyword layer2 after <strong>the</strong> command<br />

qos-policy-input.<br />

2. Once you create an input QoS policy, do one or more of <strong>the</strong> following:<br />

• Configure policy-based rate policing<br />

• Set a DSCP value <strong>for</strong> egress packets<br />

• Set a dot1p value <strong>for</strong> egress packets<br />

Configure policy-based rate policing<br />

Rate police ingress traffic using <strong>the</strong> command rate-police from QOS-POLICY-IN mode.<br />

568 Quality of Service

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