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JUNOSe 7.2.x Policy Management Configuration Guide

118 ! Interface Attachment Resources

host1(config-policy-list)#classifier-group *

host1(config-policy-list-classifier-group)#filter

host1(config-policy-list-classifier-group)#exit

host1(config-policy-list)#exit

For a given line module, the policy list named polWestford5 consumes a total of one

FPGA hardware classifier resource and two software classifier resources, as

indicated in Ta b l e 2 2 .

Interface Attachment Resources

JUNOSe software allocates interface attachment resources when policies are

attached to interfaces—when you attach a policy to an interface, the policy

consumes one of the interface’s attachment resources. Each interface has two

attachment resource pools. IP and IPv6 policy attachments are allocated from the

interface’s IP attachment resource pool; all other attachments are allocated from

the interface’s layer 2 attachment resource pool.

! The type of line module determines the number of policies attachments

supported by interfaces. See ERX Module Guide, Appendix A, Module Protocol

Support for more information about supported line modules. See E320 Module

Guide, Appendix A, IOA Protocol Support for information about the modules that

support BGP.

! On ASIC-based line modules (OC48/STM16, GE-2, and GE-HDE line modules),

you can have a maximum of 8191 IP policy attachments and 8191 layer 2

policy attachments for ingress policies per forwarding controller, and 8191 IP

policy attachments and 8191 layer 2 policy attachments for egress policies per

forwarding controller.

! On FPGA-based line modules, you can have a maximum of 8191 IP policy

attachments and 8191 layer 2 policy attachments per forwarding controller.

Cam Hardware Classifiers and Interface Attachment Resources

CAM hardware classifiers are supported on OC48/STM16, GE-2, and GE-HDE

ASIC-based line modules. Policies that use CAM hardware classifiers consume one

interface attachment resource, regardless of the number of classifier entries in a

policy.

Table 22: Resource Consumption

Number of Resources Consumed Classifier Category

1 hardware ! Protocol

! Destination address

! Source address

1 software Color

1 software User-packet-class

Juniper E320 User Manual

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