committed-burst-size
Syntax
committed-burst-size bytes;
Hierarchy Level
[edit dynamic-profiles profile-name firewall
name
],
[edit dynamic-profiles profile-name firewall
name
[edit firewall
policer-name
],
[edit firewall
policer-name
]
Release Information
Statement introduced in Junos OS Release 7.4.
Support at the
[edit dynamic-profiles ... single-rate]
and
[edit dynamic-profiles ... two-rate]
hierarchy levels introduced in Junos OS Release 11.4.
Statement introduced in Junos OS Release 12.3R2 for EX Series switches.
Description
For a three-color policer, configure the committed burst size (CBS) as a number of bytes.
NOTE:
When you include the
committed-burst-size
statement in the
configuration, you must also include the
committed-information-rate
statement at the same hierarchy level.
In three-color policing, a committed information rate (CIR) defines the guaranteed
bandwidth for traffic arriving at or departing from the interface under normal line
conditions. A flow of traffic at an average rate that conforms to the CIR is categorized
green.
During periods of average traffic rates below the CIR, any unused bandwidth capacity
accumulates up to a maximum amount defined by the CBS. Short periods of bursting
traffic (back-to-back traffic at averages rates that exceed the CIR) are also categorized
as green provided that unused bandwidth capacity is available.
Traffic that exceeds both the CIR and the CBS is considered nonconforming.
Single-rate three-color policers use a
dual token bucket algorithm
to measure traffic
against a single rate limit. Nonconforming traffic is categorized as yellow or red, based
on the
excess-burst-size
statement included in the policer configuration.
Two-rate three-color policers use a
dual-rate dual token bucket algorithm
to measure
traffic against two rate limits. Nonconforming traffic is categorized as yellow or red based
on the
peak-information-rate
and
peak-burst-rate
statements included in the policer
configuration.
Options
bytes
—Number of bytes. You can specify a value in bytes either as a complete decimal
number or as a decimal number followed by the abbreviation
k
(1000),
m
(1,000,000), or
g
(1,000,000,000).
Range:
1500 through 100,000,000,000 bytes
Copyright © 2016, Juniper Networks, Inc.
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