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Configure Differentiated-Services-Aware Traffic Engineering

Differentiated-services-aware traffic engineering provides a way to guarantee a specified level of service over an MPLS network. The routers providing differentiated-services-aware traffic engineering are part of a differentiated services network domain. All routers participating in a differentiated services domain must have differentiated-services-aware traffic engineering enabled.

To help ensure that the specified service level is provided, it is necessary to ensure that no more than the amount of traffic specified is sent over the differentiated services domain. You can accomplish this goal by configuring a policer to police or rate limit the volume of traffic transiting the differentiated service domain. For more information about how to configure policers for label-switched paths (LSPs), see Configure Policers for LSPs.

This feature can help to improve the quality of Internet services such as voice over IP (VoIP). It also makes it possible to better emulate an ATM circuit over an MPLS network.

This chapter describes how to configure differentiated-services-aware traffic engineering for LSPs and multiclass LSPs:

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