JUNOSe 9.1.x Quality of Service Configuration Guide > Configuring Strict-Priority Scheduling > Configuring Strict-Priority Scheduling

Configuring Strict-Priority Scheduling

To configure strict-priority scheduling:

1. Configure the traffic classes.

host1(config)#traffic-class Low-loss-1

host1(config-traffic-class)#exit

host1(config)#traffic-class Low-latency-1

host1(config-traffic-class)#exit

host1(config)#traffic-class Low-latency-2

host1(config-traffic-class)#exit

2. Configure the auto-strict-priority traffic-class group, and add the traffic classes that must receive strict-priority scheduling to the group.

host1(config)#traffic-class-group Strict-priority auto-strict-priority

host1(config-traffic-class-group)#traffic-class Low-latency-1

host1(config-traffic-class-group)#traffic-class Low-latency-2

host1(config-traffic-class-group)#exit

3. Create a scheduler profile for strict-priority traffic and configure the shaping rate.

host1(config)#scheduler-profile strictPriorityBandwidth

host1(config-scheduler-profile)#shaping-rate 20000000

host1(config-scheduler-profile)#exit

4. Configure a QoS profile.

host1(config)#qos-profile Example-qos-profile

host1(config-qos-profile)#atm group default

host1(config-qos-profile)#atm group Strict-priority scheduler-profile 
strictPriorityBandwidth

host1(config-qos-profile)#atm-vc node group default

host1(config-qos-profile)#atm-vc node group Strict-priority

host1(config-qos-profile)#atm-vc queue traffic-class best-effort

host1(config-qos-profile)#atm-vc queue traffic-class Low-loss-1

host1(config-qos-profile)#atm-vc queue traffic-class Low-latency-1

host1(config-qos-profile)#atm-vc queue traffic-class Low-latency-2

host1(config-qos-profile)#exit

5. Attach the QoS profile to an interface.

host1(config)#interface atm 2/0

host1(config-if)#qos-profile Example-qos-profile

host1(config-if)#exit

host1(config)#

This configuration creates the hierarchy shown in Figure 15.

Figure 15: Sample Strict-Priority Scheduling Hierarchy

Related Topics

• Strict-Priority and Relative Strict-Priority Scheduling Overview
• For more information about specifying an expression that you can reference within a scheduler profile, see Using Expressions for Bandwidth and Burst Values in a Scheduler Profile
• group command
• node command
• qos-profile command
• queue command
• scheduler-profile command
• shaping-rate command
• strict-priority command
• traffic-class command
• traffic-class-group command