Bandwidth Policers; Bandwidth Policer Overview; Guidelines For Configuring A Bandwidth Policer; Chapter 8 Bandwidth Policers - Juniper EX9200 Features Manual

CHAPTER 8

Bandwidth Policers

Bandwidth Policer Overview

Guidelines for Configuring a Bandwidth Policer

Copyright © 2016, Juniper Networks, Inc.
Bandwidth Policer Overview on page 75
Example: Configuring a Logical Bandwidth Policer on page 76
For a single-rate two-color policer only, you can specify the bandwidth limit as a
percentage value from 1 through 100 instead of as an absolute number of bits per second.
This type of two-color policer, called a bandwidth policer, rate-limits traffic to a bandwidth
limit that is calculated as a percentage of either the physical interface media rate or the
logical interface configured shaping rate.
The following guidelines apply to configuring a bandwidth policer:
To specify a percentage bandwidth limit, you include the
statement in place of the
By default, a bandwidth policer calculates the percentage bandwidth limit based on
the physical interface port speed. To configure a bandwidth policer to calculate the
percentage bandwidth limit based on the configured logical interface shaping rate
instead, include the logical-bandwidth-policer
hierarchy level. This type of bandwidth policer is called a logical bandwidth
policer-name]
policer.
You can configure a logical interface shaping rate by including the
statement at the
[edit class-of-service interfaces interface interface-name unit
hierarchy level. A logical interface shaping rate causes the specified
logical-unit-number]
amount of bandwidth to be allocated to the logical interface.
NOTE: If you configure a logical-bandwidth policer and then apply the
policer to a logical interface that is not configured with a shaping rate, then
the policer rate-limits traffic on that logical interface to calculate the
percentage bandwidth limit based on the physical interface port speed,
even if you include the
policer configuration.
statement.
bandwidth-limit bps
statement at the
logical-bandwidth-policer
bandwidth-percent percentage
[edit firewall policer
shaping-rate bps
statement in the bandwidth
75