Reference Guide

736 | Quality of Service (QoS)
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Specifying WRED drop precedence:
Specifying WRED drop precedence is supported on the S5000 switch.
Specify a WRED profile to yellow and/or green traffic using the command
wred from QOS-POLICY-OUT
mode. See Applying a WRED profile to traffic.
Creating Policy Maps
There are two types of policy maps: input and output.
Creating Input Policy Maps
There are two types of input policy-maps: Layer 3 and Layer 2.
1. Create a Layer 3 input policy map using the command
policy-map-input from CONFIGURATION mode.
Create a Layer 2 input policy map by specifying the keyword
layer2 with the policy-map-input command.
2. Once you create an input policy map, do one or more of the following:
• Applying a class-map or input QoS policy to a queue
• Applying an input QoS policy to an input policy map
• Honoring DSCP values on ingress packets
• Honoring dot1p values on ingress packets
3. Apply the input policy map to an interface.
Applying a class-map or input QoS policy to a queue:
Assign an input QoS policy to a queue using the command service-queue from POLICY-MAP-IN mode.
Applying an input QoS policy to an input policy map:
Apply an input QoS policy to an input policy map using the command policy-aggregate from
POLICY-MAP-IN mode.
Honoring DSCP values on ingress packets:
2 128 56.89% 60%
3 32 14.22% 14%
Table 39-3. Assigning Bandwidth Weights for the S5000
Queue Weight
Equivalent
Percentage
Target
Allocation