atmIfCACbrTxQueueLimit 1.3.6.1.4.1.562.2.4.1.114.3.2.100.1.60

This attribute specifies the default maximum queue length for the emission queues used to buffer the traffic of the CBR service category. It is used as the basis for setting the discard thresholds on both common and per-VC queues. For the common queue, the discard thresholds are set at approximately 35, 75, and 90 percent of the value of this attribute for traffic at discard priority 3 (DP=3), DP=2 and DP=1 respectively. For a per-VC queue, the actual limit may be reduced depending on the shaping rate of the connection (for standard Vpt Vccs, this is the shaping rate of the Vpt). The discard thresholds are set at approximately 35, 75 and 90 percent of the scaled queue limit for traffic at discard priority 3 (DP=3), DP=2 and DP=1 respectively. However, a reduction will never result in a value that is less than the value set for the minPerVcQueueLimit attribute. CQC-based ATM cards do not support per-VC queues at the CBR service category. When this attribute is set to autoConfigure, an appropriate value is selected based on the card type. It is set to 96 for all Passport ATM cards (DS1, E1, IMA, JT2, DS3, E3, OC3, both CQC-based cards and ATM IP cards). For ATM IP FPs, the per-VC queue limit may be overridden for a permanent connection by specifying a value in the Vcd Tm or Vpd Tm txQueueLimit attribute. The operational value of the maximum length of a queue (common or per-VC) is indicated by the Vcc Tm, Vpc Tm, or Vpt Tm txQueueThresholds attribute. For standard Vpts, this attribute does not apply when using per-VC queuing and only applies when using common queueing. When using per-VC queueing, regardless of the Vpt's service category, standard Vpts use the AtmIf Ca NrtVbr txQueueLimit value as their default. This attribute does not apply to basic Vpts. VALUES ( 0 = autoConfigure )