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Configuration Guide - MPLS

S7700 and S9700 V200R010C00

This document describes MPLS configurations supported by the switch, including the principle and configuration procedures of static LSPs, MPLS LDP, MPLS TE, MPLS QoS, MPLS OAM, Seamless MPLS, and MPLS common features, and provides configuration examples.
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Creating a DiffServ Domain and Configuring Priority Mapping

Creating a DiffServ Domain and Configuring Priority Mapping

Context

A DiffServ domain comprises of connected DiffServ nodes, which use the same service policy and implement the same PHBs.

When traffic enters a device, the device maps packet priorities to PHBs and colors. The device performs congestion management based on PHBs and congestion avoidance based on colors. When traffic flows out of the device, the device maps PHBs and colors of packets to priorities. The downstream device provides QoS services based on packet priorities.

Procedure

  1. Run:

    system-view

    The system view is displayed.

  2. Run:

    diffserv domain { default | ds-domain-name }

    A DiffServ domain is created and the DiffServ domain view is displayed.

    The default domain defines the default mappings from packet priorities to PHBs and colors. You can modify the mappings defined in the default domain but cannot delete the default domain.

  3. Define a traffic policy on the device.

    • Run:

      mpls-exp-inbound exp-value phb service-class [ color ]

      The inbound interface is configured to map EXP priorities of MPLS packets to the PHBs and colors.

    • Run:

      mpls-exp-outbound service-class color map exp-value

      The outbound interface is configured to map PHBs and colors to EXP priorities of MPLS packets.

    To check the default mappings between PHBs and colors of MPLS packets and EXP priorities, see mpls-exp-inbound and mpls-exp-outbound commands.

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Updated: 2019-04-18

Document ID: EDOC1000141902

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