DSCP Preserve Global

This method of configuration allows Network operator to enable or disable DSCP preserve for all the services in an edge router.

Prerequisites

The L3VPN service will operate seamlessly from end to end without any packet loss, using either OSPF or IS-IS as the IGP, with traffic profiles configured based on user-defined DSCP values.

• Globally enable dscp-preserve using the mpls lsp-encap-dscp-preserve command.

•

Global level configuration for PE1:

Copy

    config t
    qos enable
    !
    qos profile dscp-to-queue profile1
    dscp 24 queue 3 dscp 32

•

interface level configuration for PE1:

Copy

    interface xe3
    qos map-profile dscp-to-queue profile1
    !