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to which you should apply the QoS policy (using the service-queue from POLICY-MAP-IN mode). If
you apply the QoS policy to a queue other than the one specified in the informational message, Dell
Networking OS replaces the first 3–bits in the DSCP field with the queue ID you specified.
Example of Setting a DSCP Value for Egress Packets
Dell#config
Dell(conf)#qos-policy-input my-input-qos-policy
Dell(conf-qos-policy-in)#set ip-dscp 34
% Info: To set the specified DSCP value 34 (100-010 b) the QoS policy must be
mapped to queue
4 (100 b).
Dell(conf-qos-policy-in)#show config
!
qos-policy-input my-input-qos-policy
set ip-dscp 34
Dell(conf-qos-policy-in)#end
Dell#
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
Creating an Output QoS Policy
To create an output QoS policy, use the following commands.
1. Create an output QoS policy.
CONFIGURATION mode
qos-policy-output
2. After you configure an output QoS policy, do one or more of the following:
Strict-Priority Queuing
Configuring Policy-Based Rate Shaping
Allocating Bandwidth to Queue
Specifying WRED Drop Precedence
Strict-Priority Queuing
You can configure strict-priority queueing in an output QoS policy. Strict-priority means that the system
de-queues all packets from the assigned queue before servicing any other queues.
Strict-priority queueing is performed using the Scheduler Strict feature. When scheduler strict is applied
to multiple queues, the higher queue number takes precedence. For more information, see Enabling
Strict-Priority Queueing.
Quality of Service (QoS)
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