atmIfVptVccVcdTmRxTdpTable 1.3.6.1.4.1.562.2.4.1.114.9.20.2.2.457

This attribute is a vector of four traffic parameters whose meanings are defined by the rxTrafficDescType attribute. The values of peak cell rate (PCR), sustained cell rate (SCR) and Minimum Cell Rate (MCR) are expressed in cell/s. Maximum burst size (MBS) is expressed in cells. The value of CDVT is expressed in microseconds. The values of PCR, SCR, MCR, MBS and CDVT are used for usage parameter control (UPC). When rxTrafficDescType is 1 or 2, all of the parameters must be set to zero (unused). When rxTrafficDescType is 3, parameter 1 represents the PCR for CLP equal to 0 and 1 traffic. Parameter 1 must be non-zero. Parameters 2 and 3 must be set to zero (unused). When rxTrafficDescType is 4, parameter 1 represents the PCR for CLP equal to 0 and 1 traffic; parameter 2 represents the PCR for CLP equal to 0 traffic with cell discard. Parameters 1 and 2 must be non-zero. Parameter 3 must be set to zero (unused). Parameter 1 must be greater than or equal to parameter 2. When rxTrafficDescType is 5, parameter 1 represents the PCR for CLP equal to 0 and 1 traffic; parameter 2 represents the PCR for CLP equal to 0 traffic with cell tagging. Parameters 1 and 2 must be non-zero. Parameter 3 must be set to zero (unused). Parameter 1 must be greater than or equal to parameter 2. When rxTrafficDescType is a 6, parameter 1 represents the PCR for CLP equal to 0 and 1 traffic; parameter 2 represents the SCR for CLP equal to 0 and 1 traffic; parameter 3 represents the MBS for CLP equal to 0 and 1 traffic. Parameters 1, 2 and 3 must be non- zero. Parameter 1 must be greater than or equal to Parameter 2. When rxTrafficDescType is 7, parameter 1 represents the PCR for CLP equal to 0 and 1 traffic; parameter 2 represents the SCR for CLP equal to 0 traffic with cell discard; parameter 3 represents the MBS for CLP equal to 0 traffic. Parameters 1, 2 and 3 must be non- zero. Parameter 1 must be greater than or equal to parameter 2. When rxTrafficDescType is 8, parameter 1 represents the PCR for CLP equal to 0 and 1 traffic; parameter 2 represents the SCR for CLP equal to 0 traffic with cell tagging; parameter 3 represents the MBS for CLP equal to 0 traffic. Parameter 1, 2 and 3 must be non- zero. Parameter 1 must be greater than or equal to parameter 2. When rxTrafficDescType is 9, parameter 1 represents the PCR; parameter 2 represents the CDVT; parameter 3 represents the MCR. Parameter 4 is not used and must be zero. Parameter 1,must be non- zero and must be greater than or equal to parameter 3. Parameter 3 may optionally be zero. When rxTrafficDescType is any value from 3 through 8, parameter 4 represents the CDVT. If the value of CDVT either in parameter 2 or in parameter 4 is zero, the CDVT is taken from the CA defaults for the particular atmServiceCategory of this connection. On a CQC-based ATM card, when rxTrafficDescriptorType is 3 through 8, there are certain extreme combinations of rxTrafficDescParm which are outside the capabilities of the UPC hardware. The check prov command detects such cases and generates an error message. If this happens, adjust the parameters until they fall within the supported limits. To calculate the limits, use the following formulae: I1 = 1 000 000 000 / PCR L1 = CDVT * 1000 I2 = 1,000,000,000 / SCR L2 = CDVT + (MBS - 1) * (I2 - I1) I1 and I2 must be less than or equal to 335,523,840. I1 + L1 must be less than or equal to 1,342,156,800. I2 + L2 must be less than or equal to 1,342,156,800. Note that I2 and L2 only apply when the rxTrafficDescriptorType is 6 through 8. If the values of I1, L1, I2 or L2 are closer to the limits described above, a further restriction applies. Specifically, if either: I1 > 41,940,480 or I2 > 41,940,480 or I1 + L1 > 167,769,600 or I2 + L2 > 167,769,600 then both I1 and I2 must be greater than 20,480. Parameter 5 of the rxTrafficDescParm is always unused. If the rxTrafficDescType is sameAsTx, the values provisioned in this attribute are ignored. The traffic parameters for the receive direction are taken from the txTrafficDescParm.