Figure 45: Low-Latency Mode - Juniper JUNOSE 11.1.X - QUALITY OF SERVICE CONFIGURATION GUIDE 3-21-2010 Configuration Manual

JUNOSe 11.1.x Quality of Service Configuration Guide

Figure 45: Low-Latency Mode

To configure low-latency mode with a strict-priority queue and a best-effort queue:
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Configuring Low-Latency Mode for Per-Port Queuing on ATM Interfaces
Configure the traffic class.
host1(config)#traffic-class strict
host1(config-traffic-class)#exit
Set the traffic class in the traffic-class group.
host1(config)#traffic-class-group strict
host1(config-traffic-class-group)#traffic-class strict
host1(config-traffic-class-group)#exit
Define the scheduler profile for the traffic-class group.
host1(config)#scheduler-profile strict
host1(config-scheduler-profile)#strict-priority
host1(config-scheduler-profile)#exit
Configure the QoS profile with two ATM VC queues.
host1(config)#qos-profile low-latency-q-p
host1(config-qos-profile)#atm-vc node
host1(config-qos-profile)#atm-vc queue traffic-class best-effort
host1(config-qos-profile)#atm group strict scheduler-profile strict
host1(config-qos-profile)#atm-vc queue traffic-class strict
host1(config-qos-profile)#exit
From the desired port, set the QoS port mode to low latency.
host1(config)#interface atm 2/0
host1(config-if)#qos-mode-port low-latency