Cisco ASR 900 Series Configuration Guide

CHAPTER 2
CEM over MPLS QoS
The QoS EXP matching feature allows you to classify and mark network traffic by modifying the Multiprotocol
Label Switching (MPLS) experimental bits (EXP) field in IP packets. This module contains conceptual
information and the configuration tasks for classifying and marking network traffic using the MPLS EXP
field.
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Finding Feature Information, page 11
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Information About CEM over MPLS QOS, page 11
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How to Classify and Mark MPLS EXP, page 12
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Configuration Examples, page 13
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Additional References for CEM over MPLS QoS, page 16
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and
feature information, see Bug Search Tool and the release notes for your platform and software release. To
find information about the features documented in this module, and to see a list of the releases in which each
feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Information About CEM over MPLS QOS
Classifying and Marking MPLS EXP Overview
The QoS EXP matching feature allows you to organize network traffic by setting values for the MPLS EXP
field in MPLS packets. By choosing different values for the MPLS EXP field, you can mark packets so that
packets have the priority that they require during periods of congestion. Setting the MPLS EXP value allows
you to:
•
Classify traffic
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x (Cisco
ASR 900 Series)
11

Cisco ASR 900 Series Specifications

General

Brand	Cisco
Model	ASR 900 Series
Category	Network Router
Language	English