Policy Resources; Policy Resources Overview; Modules - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - POLICY MANAGEMENT CONFIGURATION GUIDE 2010-10-04 Configuration Manual

CHAPTER 8

Policy Resources

Policy Resources Overview

Copyright © 2010, Juniper Networks, Inc.
This chapter provides information about configuring policy resources. The chapter
discusses the following topics:
Policy Resources Overview on page 151
FPGA Hardware Classifiers on page 153
CAM Hardware Classifiers Overview on page 154
Size Limit for IP and IPv6 CAM Hardware Classifiers on page 155
Creating and Attaching a Policy with IP Classifiers on page 160
Variable-Sized CAM Classification for IPv6 Policies Examples on page 162
Performance Impact and Scalability Considerations on page 166
Software Classifiers Overview on page 169
Interface Attachment Resources Overview on page 170
CAM Hardware Classifiers and Interface Attachment Resources on page 171
Range Vector Hardware Classifiers and Interface Attachment Resources on page 171
The maximum number of policies that you can attach to interfaces on an E Series router
depends on the classifier entries that make up the policy and the number of attachment
resources available on the interface. JunosE Software allocates interface attachment
resources when you attach policies to interfaces. See "Interface Attachment Resources
Overview" on page 170 for information about attachment resources.
An E Series router supports software and hardware classifiers. A policy can be made up
of any combination of software and hardware classifiers. You use the classifier-list
command to configure all classifiers.
There are two categories of hardware classifiers, depending on the type of line module
being used. OC48/STM16, GE-2, and GE-HDE line modules support content-addressable
memory (CAM) hardware classifiers—all other line modules support FPGA hardware
classifiers. Table 17 on page 152 lists the classifiers supported on OC48/STM16, GE-2, and
GE-HDE line modules; Table 18 on page 153 lists the classifiers supported on all other line

modules.

151