Conformance Measurement For Two-Color Marking - Juniper EX9200 Features Manual

Conformance Measurement for Two-Color Marking

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bandwidth limit as a percentage of either the physical interface port speed or the
configured logical interface shaping rate.
The token bucket depth represents the single burst size configured for the policer. You
specify the burst size by including the
If the bucket is filled to capacity, arriving tokens "overflow" the bucket and are lost.
When the bucket contains insufficient tokens for receiving or transmitting the traffic at
the interface, packets might be dropped or else re-marked with a lower forwarding class,
a higher packet loss priority (PLP) level, or both.
In two-color-marking policing, a traffic flow whose average arrival or departure rate
does not exceed the token arrival rate (bandwidth limit) is considered conforming traffic.
Packets in a conforming traffic flow (categorized as green traffic) are implicitly marked
with a packet loss priority (PLP) level of
For a traffic flow whose average arrival or departure rate exceeds the token arrival rate,
conformance to a two-color policer rate limit depends on the tokens in the bucket. If
sufficient tokens remain in the bucket, the flow is considered conforming traffic. If the
bucket does not contain sufficient tokens, the flow is considered non-conforming traffic.
Packets in a non-conforming traffic flow (categorized as red traffic) are handled according
to policing actions. Depending on the configuration of the two-color policer, packets
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: The number of tokens remaining in the bucket at any given time is a
function of the token bucket depth and the overall traffic load.
The token bucket is initially filled to capacity, and so the policer allows an initial traffic
burst (back-to-back traffic at average rates that exceed the token arrival rate) up to the
size of the token bucket depth.
During periods of relatively low traffic (traffic that arrives at or departs from the interface
at average rates below the token arrival rate), unused tokens accumulate in the bucket,
but only up to the configured token bucket depth.
Two-Color Policer Configuration Overview on page 49
Hierarchical Policer Configuration Overview
Policer Color-Marking and Actions on page 18
bandwidth-limit (Hierarchical Policer)
bandwidth-limit (Policer) on page 199
bandwidth-percent on page 201
burst-size-limit (Hierarchical Policer)
burst-size-limit (Policer) on page 203
Chapter 4: Configuring Policer Rate Limits and Actions
statement.
burst-size-limit bytes
and then passed through the interface.
low
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