Classifiers and Rewrite Rules at the Global, Physical, and Logical Interface Levels Overview

At a global level, depending on your platform, you can define EXP classification.

At a physical and logical interface level, depending on your platform, you can define the following features:

• DSCP, DSCP-IPV6, and IPv4 precedence classifiers

• DSCP, DSCP-IPV6, and IPv4 precedence rewrites

• EXP classifiers

• EXP rewrites

• IEEE 802.1p and IEEE 802.1ad classifiers (inner and outer)

• IEEE 802.1p and IEEE 802.1ad rewrites (outer)

The IEEE 802.1ad classifier uses IEEE 802.1p and DEI bits together.

Note:

You cannot configure both IEEE 802.1p and IEEE 802.1ad classifiers together.

To configure global EXP classifiers, include the classfiers exp classifier-name statement at the [edit class-of-service system-defaults] hierarchy level.

To configure classifiers or rewrite rules at the physical interface, include either the classifiers statement or the rewrite-rules statement at the [edit class-of-service interfaces interface-name] hierarchy level.

To configure fixed classifiers or rewrite rules at the logical interface, include the forwarding-class fc or the rewrite-rules statement at the [edit class-of-service interfaces interface-name unit number] hierarchy level.

To configure EXP rewrite at the logical interface, include the [edit class-of-service interfaces interface-name unit number rewrite-rules exp rewrite-rule] statement.

To display classifiers configured under system-defaults, enter the show class-of-service system-defaults command.

To display classifiers and rewrite rules bound to physical interfaces, enter the show class-of-service interfaces interface-name command.