mscAtmIfCARtVbrTrafficShaping 1.3.6.1.4.1.562.36.2.1.114.3.3.100.1.86

This attribute specifies the default traffic shaping option for connections of the rt-VBR service category. An override to this default may be specified for a provisioned connection under the Vcd Tm or Vpd Tm component. When this attribute is set to disabled, traffic shaping cannot be enabled for any rt-VBR connections. On 1pOC12SmLrAtm cards, this attribute must be set to disabled. For CQC-based ATM cards, this attribute may be set to enabled only if the interface supports shaping, as defined by the perVcQueueInterfaces attribute in the AtmResourceControl Cqc Override component. If that component does not exist, this attribute must be set to disabled. If the Vcc Tm, Vpc Tm, or Vpt Tm txTrafficDescType indicates type 1 or 2, this attribute is ignored, and traffic shaping is not applicable for that connection. When this attribute is set to inverseUpc, traffic shaping for a connection is enabled according to card type and the value of the Vcc Tm, Vpc Tm, or Vpt Tm txTrafficDescType. For 4pOC12SmIrAtm and 4pOC12SmLrAtm cards, inverseUpc shaping is not available. If this attribute is set to inverseUpc, and the txTrafficDescType is 3, 4, or 5, linear traffic shaping is enabled. Linear traffic shaping uses a single static traffic shaping rate. On CQC-based ATM FPs, if this attribute is set to inverseUpc, and the txTrafficDescType is 6, 7, or 8, linear traffic shaping is enabled. On ATM IP FPs, if this attribute is set to inverseUpc, and the txTrafficDescType is 6, 7, or 8, inverse-UPC (also referred to as VBR or dual leaky bucket) traffic shaping is enabled. Inverse-UPC traffic shaping can burst above the sustained cell rate to the peak cell rate for the duration defined by maximum burst size. Inverse- UPC traffic shaping exactly conforms to the requirements of a dual leaky bucket UPC enforcer. When this attribute is set to enabled and the txTrafficDescType is 3, 4, 5, 6, 7, or 8, traffic shaping for a connection is enabled using linear shaping. Enabling or disabling traffic shaping may require a matching change to the emissionPriority attribute and unshapedTransmitQueueing attribute for this service category. Refer to those attributes for the complete description of the interactions. This attribute does not apply to basic Vpts, and standard Vpt Vccs.