Juniper EX9200 Features Manual page 61

Requirements
Overview
Copyright © 2016, Juniper Networks, Inc.
Before you begin, make sure that the logical interface to which you apply the three-color
logical interface policer is hosted on a Gigabit Ethernet interface (
Ethernet interface ( ) on an MX Series router.
xe-
A two-rate three-color policer meters a traffic flow against a bandwidth limit and
burst-size limit for guaranteed traffic, plus a second set of bandwidth and burst-size
limits for peak traffic. Traffic that conforms to the limits for guaranteed traffic is
categorized as green, and nonconforming traffic falls into one of two categories:
Nonconforming traffic that does not exceed the bandwidth and burst-size limits for
peak traffic is categorized as yellow.
Nonconforming traffic that exceeds the bandwidth and burst-size limits for peak traffic
is categorized as red.
A logical interface policer defines traffic rate-limiting rules that you can apply to multiple
protocol families on the same logical interface without creating multiple instances of
the policer.
NOTE: You apply a logical interface policer directly to a logical interface at
the logical unit level, and not by referencing the policer in a stateless firewall
filter and then applying the filter to the logical interface at the protocol family
level.
Topology
In this example, you configure the two-rate three-color policer
logical interface policer and apply the policer to incoming Layer 2 traffic on logical interface
.
ge-1/3/1.0
NOTE: When using a three-color policer to rate-limit Layer 2 traffic,
color-aware policing can be applied to egress traffic only.
The policer defines guaranteed traffic rate limits such that traffic that conforms to the
bandwidth limit of 40 Mbps with a 100 KB allowance for traffic bursting (based on the
token-bucket formula) is categorized as green. As with any policed traffic, the packets
in a green flow are implicitly set to a
Nonconforming traffic that falls within the peak traffic limits of a 60 Mbps bandwidth
limit and a 200 KB allowance for traffic bursting (based on the token-bucket formula)
is categorized as yellow. The packets in a yellow traffic flow are implicitly set to a
medium-high loss priority and then transmitted.
Chapter 6: Two-Color and Three-Color Policers at Layer 2
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low loss priority and then transmitted.
ge- ) or a 10-Gigabit
as a color-blind
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