This document provides the device specific MIB definition (Management Information Base) variables for the xfsVDM sub-tree version 1.1, as foreseen by the XFS MIB Architecture and SNMP Extensions Programmer’s Reference document. All the attributes in all the MIBs are Mandatory. In the case where a vendor’s device does not support an attribute then a request for this unsupported attribute should return NULL. The xfsVDM version one sub-tree is identified by: xfsMIBRoot • xfsManagedService (2) • xfsVDM (9) • xfsVDMV1 (1) The xfsVDMV1 sub-tree contains the following variables: * xfsVDMInstances(1) is the number of managed services for the VDM class installed on the XFS subsystem. It is a 32 bit numerical field. * xfsVDMStatusTable(2) identifies the table for the VDM variables. * xfsVDMSubDeviceTable(3) not applicable to the VDM device. * xfsVDMErrorTable(4) identifies the table for the VDM error counters. * xfsVDMResetTable(5) identifies the table for the VDM reset variable. * xfsVDMCapabilitiesTable(7) identifies the table for VDM capabilities variables. The XFS MIB Architecture and SNMP Extensions Programmer’s Reference document provides an overview of the MIB structure. The following picture shows the structure of the xfsVDMV1 sub-tree.