Example: Configuring Priority Scheduling

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 schedulers be-sched priority medium-low
set class-of-service scheduler-maps be-map forwarding-class best-effort scheduler be-sched 
set class-of-service interfaces ge-0/0/0 scheduler-map be-map 

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 in the Junos OS CLI User Guide.

To configure priority scheduling:

1. Configure CoS and a scheduler.

   content_copy zoom_out_map

   [edit]
   user@host# edit class-of-service
   user@host# edit schedulers be-sched
   

2. Set a priority.

   content_copy zoom_out_map

   [edit class-of-service schedulers be-sched]
   user@host# set priority medium-low
   

3. Configure a scheduler map.

   content_copy zoom_out_map

   [edit]
   user@host# edit class-of-service
   user@host# edit scheduler-maps be-map
   

4. Specify the best-effort forwarding class.

   content_copy zoom_out_map

   [edit class-of-service scheduler-maps be-map]
   user@host# set forwarding-class best-effort scheduler be-sched
   

5. Apply best-effort map to an interface.

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   [edit]
   user@host# edit class-of-service
   user@host# set interfaces ge-0/0/0 scheduler-map be-map
   

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
    interfaces {
    ge-0/0/0 {
    scheduler-map be-map;
        }
        }
        scheduler-maps {
            be-map {
            forwarding-class best-effort scheduler be-sched;
        }
        }
        schedulers {
            be-sched {
        priority medium-low;
    }
}

If you are done configuring the device, enter commit from configuration mode.

Purpose

Verify that the priority scheduling is configured properly on a device.

Action

From configuration mode, enter the show class-of-service command.