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    Related Documentation

    • For definitions of other common QoS terms, see QoS Terms
     

    QoS Parameter Terms

    Table 1 defines terms used in this discussion of QoS parameters.

    Table 1: QoS Parameter Terminology Used in This Chapter

    Term

    Description

    Downreference

    QoS feature that controls a node or queue lower in the scheduler hierarchy. For example, a QoS profile that is attached to an ATM virtual circuit (ATM VC) modifies QoS settings on ATM virtual path (VP) nodes. You cannot configure downreferences for QoS parameters. We also recommend that you do not configure downreferences for QoS profiles.

    Explicit parameter instance

    Hierarchical parameter instance whose value is explicitly specified by a client. This term is meaningful only when referring to hierarchical parameter instances; non-hierarchical parameter instances are always explicit.

    Hierarchical parameter

    Parameter with both explicit instances that are configured by a QoS client, and with implicit instances that are automatically generated for all controlled interfaces. The value for the implicit instance is the sum of the explicit instances for interfaces stacked above the controlled interface.

    Implicit parameter instance

    Hierarchical parameter instance where the value is the sum of explicit parameter instances on scheduler nodes and queues stacked above them in the scheduler hierarchy.

    Parameter definition

    Definition of a parameter name and attributes that a QoS administrator creates.

    Parameter expression

    Parameters used in conjunction with operators. Scheduler profiles reference a parameter definition name within a parameter expression.

    Parameter instance

    Parameter name and value that a QoS client associates with a logical interface.

    Parameter value

    32-byte unsigned integer value associated with a parameter instance.

    QoS administrator

    Person responsible for implementing a QoS queuing architecture by configuring QoS profiles, scheduler profiles, and parameter definitions.

    QoS client

    Person responsible for configuring services for individual subscribers and setting rates for those services by using the parameter definitions and QoS profiles that the QoS administrator configures. QoS clients can use the CLI, SRC, Service Manager, IP multicast bandwidth adjustment, or RADIUS.

     

    Related Documentation

    • For definitions of other common QoS terms, see QoS Terms
     

    Published: 2014-08-11