Gathering Statistics For Rates And Events In The Queue; Qos Statistics Overview - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - QUALITY OF SERVICE CONFIGURATION GUIDE 2010-09-22 Configuration Manual

CHAPTER 5
Gathering Statistics for Rates and Events
in the Queue

QoS Statistics Overview

Copyright © 2010, Juniper Networks, Inc.
This chapter provides information for configuring statistics profiles on the E Series router.
QoS topics are discussed in the following sections:
QoS Statistics Overview on page 37
Configuring Statistic Profiles for QoS on page 39
Configuring Rate Statistics on page 39
Configuring Event Statistics on page 40
Clearing QoS Statistics on the Egress Queue on page 41
Clearing QoS Statistics on the Fabric Queue on page 42
Monitoring QoS Statistics for Rates and Events on page 42
Statistics profiles enable you to gather statistics for the rate at which packets are
forwarded out of a queue and for the rate at which committed, conformed, or exceeded
packets are dropped. Statistics profiles also enable you to use events to monitor the rate
statistics. You can then use show commands to view the results of the statistics gathering.
You can create up to 250 statistics profiles on the E Series Broadband Services Routers.
The profiles are referenced by a queue rule within a QoS profile.
Statistics cannot be collected on failover queues.
When you create a statistics profile, you specify the time period over which statistics are
gathered. To gather event statistics, you configure the thresholds for triggering rate-event
reporting.
Rate period-Time period, in seconds, over which statistics are gathered. For example,
a 30-second rate period results in rate statistics being gathered over 30-second time
segments.
Forwarding rate threshold-Threshold for forwarding rate events. A forwarding-rate
event is counted whenever the forwarding rate exceeds the specified threshold.
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