Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010, Configuration Manual

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queue after sending a packet. This burst size limits the number of nonstrict packets
that can precede a relative strict-priority packet to the minimum, one packet.
Figure 14: Tuning Latency on Strict-Priority Queues
Related Topics
Strict-Priority and Relative Strict-Priority Scheduling Overview on page 59
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Configuring Strict-Priority Scheduling on page 66
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Relative Strict-Priority Scheduling Overview on page 60
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
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Configuring Strict-Priority Scheduling
JUNOSe 11.1.x Quality of Service Configuration Guide