Bandwidth-Percent; Configuration Statements - Juniper EX9200 Features Manual

bandwidth-percent

Syntax
Hierarchy Level
Release Information
Description
Copyright © 2016, Juniper Networks, Inc.
bandwidth-percent percentage;
[edit dynamic-profiles profile-name firewall
[edit firewall policer policer-name if-exceeding],
[edit logical-systems logical-system-name
Statement introduced before Junos OS Release 7.4.
Support at the
[edit dynamic-profiles ... if-exceeding]
OS Release 11.4.
Statement introduced in Junos OS Release 12.3R2 for EX Series switches.
For a single-rate two-color policer, configure the bandwidth limit as a percentage value.
Single-rate two-color policing uses the single token bucket algorithm to measure
traffic-flow conformance to a two-color policer rate limit.
Traffic at the interface that conforms to the bandwidth limit is categorized green. Traffic
that exceeds the specified rate is also categorized as green provided that sufficient tokens
remain in the single token bucket. Packets in a green flow are implicitly marked with
packet loss priority and then passed through the interface.
Traffic that exceeds the specified rate when insufficient tokens remain in the single token
bucket is categorized red. Depending on the configuration of the two-color policer, packets
in a red traffic flow might be implicitly discarded; or the packets might be re-marked with
a specified forwarding class, a specified PLP, or both, and then passed through the
interface.
NOTE: This statement specifies the bandwidth limit as a percentage of either
the physical interface port speed or the configured logical interface shaping
rate. Alternatively, you can use the
the bandwidth limit as an absolute number of bits per second.
The function of the bandwidth limit is extended by the burst size (configured using the
burst-size-limit bytes statement) to allow bursts of traffic up to a limit based on the
overall traffic load:
When a single-rate two-color policer is applied to the input or output traffic at an
interface, the initial capacity for traffic bursting is equal to the number of bytes specified
by this statement.
During periods of relatively low traffic (traffic that arrives at or departs from the interface
at overall rates below the token arrival rate), unused tokens accumulate in the bucket,
but only up to the configured token bucket depth.
Single-rate two-color policing allows bursts of traffic for short periods, whereas single-rate
and two-rate three-color policing allows more sustained bursts of traffic.
Chapter 18: Configuration Statements
policer policer-name if-exceeding],
policer policer-name if-exceeding]
hierarchy level introduced in Junos
bandwidth-limit bps statement to specify
low
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