MLS QOS 1.8 and 1.9

Do I need to enable globally mls qos in order to add the configuration lines for: mls qos map ip-prec-dscp and interface command mls qos trus ip-precedence?

Comments

  • Defaults
    ========
    QoS is disabled. There is no concept of trusted or untrusted ports because the packets are not modified. Traffic is switched in pass-through mode.

    When QoS is enabled with the "mls qos" global configuration command, the default port trust state on all ports is untrusted.


    Usage Guidelines
    ================
    QoS must be globally enabled to use QoS classification, policing, mark down or drop, queueing, and traffic shaping features. You can create a policy-map and attach it to a port before entering the mls qos command. However, until you enter the "mls qos" command, QoS processing is disabled.
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