Basic Single-Rate Two-Color Policers; Single-Rate Two-Color Policer Overview; Chapter 7 Basic Single-Rate Two-Color Policers - Juniper EX9200 Features Manual

CHAPTER 7

Basic Single-Rate Two-Color Policers

Single-Rate Two-Color Policer Overview

Copyright © 2016, Juniper Networks, Inc.
Single-Rate Two-Color Policer Overview on page 55
Example: Limiting Inbound Traffic at Your Network Border by Configuring an Ingress
Single-Rate Two-Color Policer on page 56
Example: Configuring Interface and Firewall Filter Policers at the Same
Interface on page 64
Single-rate two color policing enforces a configured rate of traffic flow for a particular
service level by applying implicit or configured actions to traffic that does not conform
to the limits. When you apply a single-rate two-color policer to the input or output traffic
at an interface, the policer meters the traffic flow to the rate limit defined by the following
components:
Bandwidth limit—The average number of bits per second permitted for packets received
or transmitted at the interface. You can specify the bandwidth limit as an absolute
number of bits per second or as a percentage value from 1 through 100. If a percentage
value is specified, the effective bandwidth limit is calculated as a percentage of either
the physical interface media rate or the logical interface configured shaping rate.
Packets per second (pps) limit (MX Series with MPC only)–The average number of
packets per second permitted for packets received or transmitted at the interface. You
specify the pps limit as an absolute number of packets per second.
Burst-size limit—The maximum size permitted for bursts of data.
Packet burst limit–
For a traffic flow that conforms to the configured limits (categorized as green traffic),
packets are implicitly marked with a packet loss priority (PLP) level of
to pass through the interface unrestricted.
For a traffic flow that exceeds the configured limits (categorized as red traffic), packets
are handled according to the traffic-policing actions configured for the policer. The action
might be to discard the packet, or the action might be to re-mark the packet with a
specified forwarding class, a specified PLP, or both, and then transmit the packet.
and are allowed
low
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