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Example: Assigning Forwarding Classes to Output Queues
This example shows how to assign forwarding classes to output queues.
Requirements
Before you begin, determine the MF classifier. See Example: Configuring and Applying a Firewall Filter for a Multifield Classifier.
Overview
In this example, you configure class of service and assign best-effort traffic to queue 0 as be-class, expedited forwarding traffic to queue 1 as ef-class, assured forwarding traffic to queue 2 as af-class, and network control traffic to queue 3 as nc-class.
You must assign the forwarding classes established by the MF classifier to output queues. Table 1 shows how this example assigns output queues.
mf-classifier Forwarding Class |
For Traffic Type |
Output Queue |
|---|---|---|
be-class |
Best-effort traffic |
Queue 0 |
ef-class |
Expedited forwarding traffic |
Queue 1 |
af-class |
Assured forwarding traffic |
Queue 2 |
nc-class |
Network control traffic |
Queue 3 |
Configuration
Procedure
CLI Quick Configuration
To quickly configure this example, copy the
following commands, paste them into a text file, remove any line breaks,
change any details necessary to match your network configuration,
copy and paste the commands into the CLI at the [edit] hierarchy
level, and then enter commit from the configuration mode.
set class-of-service forwarding-classes queue 0 be-class set class-of-service forwarding-classes queue 1 ef-class set class-of-service forwarding-classes queue 2 af-class set class-of-service forwarding-classes queue 3 nc-class
Step-by-Step Procedure
The following example requires you to navigate various levels in the configuration hierarchy. For instructions on how to do that, see Using the CLI Editor in Configuration Mode.
To assign forwarding classes to output queues:
Configure class of service.
[edit] user@host# edit class-of-service forwarding-classes
Assign best-effort traffic to queue 0.
[edit class-of-service forwarding-classes] user@host# set queue 0 be-class
Assign expedited forwarding traffic to queue 1.
[edit class-of-service forwarding-classes] user@host# set queue 1 ef-class
Assign assured forwarding traffic to queue 2.
[edit class-of-service forwarding-classes] user@host# set queue 2 af-class
Assign network control traffic to queue 3.
[edit class-of-service forwarding-classes] user@host# set queue 3 nc-class
Results
From configuration mode, confirm your configuration
by entering the show class-of-service command. If the output
does not display the intended configuration, repeat the configuration
instructions in this example to correct it.
[edit]
user@host# show class-of-service
forwarding-classes {
queue 0 be-class;
queue 1 ef-class;
queue 2 af-class;
queue 3 nc-class;
}
If you are done configuring the device, enter commit from configuration mode.
You cannot commit a configuration that assigns the same forwarding class to two different queues.