Global Pool Tunnels; Prerequisites For Ds-Te; Restrictions And Limitations For Ds-Te; Configuring Ds-Te - Cisco 10000 Series Configuration Manual

Quality of service configuration guide

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MPLS Traffic Engineering—DiffServ Aware

Global Pool Tunnels

A tunnel that uses global pool bandwidth carries the best-effort class of traffic as well as other classes

of traffic. To ensure that traffic from each class receives differentiated services (DiffServ), each traffic

class has a distinct DiffServ queue and the router marks each class of traffic with a unique value in the

MPLS EXP field. The router places traffic in the appropriate queue based on this unique value. The

router sets tunnel bandwidth based on the expected aggregate traffic across all classes of service.

To run DS-TE your network must support the following Cisco IOS features:

IP CEF is enabled by default on the Cisco 10000 series router and it cannot be turned off. If you attempt

to disable IP CEF, an error appears.

The total number of TE tunnels (regular TE tunnels and DS-TE tunnels) that can originate on a device

is limited to 1013 tunnels.

To configure DS-TE, perform the following required configuration tasks:

Cisco 10000 Series Router Quality of Service Configuration Guide

Multiprotocol Label Switching (MPLS)

IP Cisco Express Forwarding (CEF)

Open Shortest Path First (OSPF) or Intermediate System to Intermediate System (IS-IS) routing

Resource Reservation Protocol-Traffic Engineering (RSVP-TE)

Activating Traffic Engineering on the Router, page 20-21

Activating Traffic Engineering on the Interface, page 20-23

Configuring the Tunnel Interface, page 20-24

Configuring Guaranteed Bandwidth Service, page 20-25

Configuring Quality of Service for MPLS Traffic

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