wfAtmVbrTable 1.3.6.1.4.1.18.3.5.9.5.8

The ATM VBR Table - CSU/DSU Resident The ATM Variable Bit Rate (VBR) object is one of several types of ATM Adaptation Layer (AAL) objects. The ATM VBR object reflects information about a VBR service carried by an ATM UNI on behalf of a DTE interface (e.g. a DXI). In particular, it contains both configuration and performance information about the Segmentation and Reassembly (SAR) sublayer and the Convergence Sublayer (CS). Each instance of the VBR object has only one corresponding DTE interface, and only one corresponding ATM UNI, although it may correspond to several VPI/VCIs within a particular ATM UNI. The VBR object optionally keeps some information on a per-VPI/VCI basis. It should be noted that in the ATM VBR MIB, the receive (transmit) direction refers to data received from (transmitted to) the ATM UNI interface. ** For DL200 and DL3200 DSUs, there is only one ATM UNI per DSU ** and only one AAL object (specifically VBR) per ATM UNI. ** For these products, the DSU does not perform the ** integrity checks for the VBR CS layer, and thus will not ** provide all variables for the VBR CS table. The Router/Host ** is expected to perform these checks and provide these variables.