The MIB module allows a management application to
        select a set of MIB object instances whose values need 
        to be collected on a periodic basis. The term 'data' in 
        the context of this MIB is used to generically refer to 
        the values of the selected set of object instances. 
        Once the required setup is done, the MIB implementation 
        carries out the following periodic tasks:
          - collects the required object values into local
            file-like entities called VFiles (virtual files).
          - transfers the VFiles to specified locations.
          - carries out VFile management operations.
        Some of the key features of this MIB are:
          a) Allows grouping of MIB objects into groups called 
             data groups. The constraint is that the MIB objects 
             grouped into a data group, need to have the same 
             semantic MIB index. So it is possible to group MIB 
             objects belonging to different MIB tables into a 
             single data group as long as the above constraint is 
             For e.g. it is possible to group ifInOctets from 
             ifTable, ifHCInOctets from ifXTable, 
             dot3StatsExcessiveCollisions from dot3StatsTable 
             into a single data group.
          b) Allows the application to specify a set of instances 
             (of the MIB objects in a data group) whose values 
             need to be collected. 
          c) The required data can be collected for each such 
             data group on a periodic basis into a virtual file
             (VFile). A VFile is an abstraction of a file. 
          d) The format of the contents of the VFile, can be 
             specified by the application. 
          e) An application can also specify a collection period. 
             A collection period is an interval of time during 
             which data is collected into a VFile. After the 
             collection period ends, the VFile is frozen, and a 
             new VFile is created for storing data. The frozen 
             VFile is then transferred to a specified destination. 
             An application can choose to retain such frozen 
             VFiles on the device for a certain period of time, 
             called the retention period. 
                 Data Collection MIB vs Bulkfile MIB
           The data collection MIB can pretty much do what the
           CISCO-BULK-FILE-MIB (Bulkfile MIB) can do. The 'manual' 
           mode of the Data collection MIB is similar to the way 
           in which the Bulkfile MIB operates.
           However the data collection MIB is mainly targetted 
           for medium to high-end platforms which have sufficient
           local storage (volatile or permanent) to store VFiles.
           Locally storing VFiles, helps minimize loss of data 
           during temporary network outages. If the local store 
           is permament, then the collected data is also available 
           across agent restarts.  
           The data collection MIB has more powerful data 
           selection features than the Bulkfile MIB. It allows 
           grouping of MIB objects from different tables into 
           data groups. It also incorporates a more flexible 
           instance selection mechanism, where the application 
           is not restricted to fetching an entire MIB table. 
            Base objects: 
            MIB objects whose values an application needs to 
            Data group:
            A group of base objects. Can be of 2 types: 'object' 
            and 'table'. An 'object' type data group can consist 
            of only one fully instantiated base object. A 'table'
            type data group can consist of more than one base
            objects, each a columnar object in a conceptual
            table. In addition a 'table' type data group can
            specify the instances of the base objects whose 
            values need to be collected. In the context of this 
            MIB, collecting data for a data group means fetching 
            the values of the associated base object instances 
            and storing them into VFiles.
            Virtual File (VFile):
            A VFile is a file like entity used to collect data. 
            An agent might choose to implement a VFile as a 
            simple in-memory buffer, or it might choose to
            use a file in it's filesystem. An application does
            not really need to know the location of a VFile 
            - the MIB provides mechanisms to transfer the 
            VFile to application specified locations. However 
            if the implementation supports it, the application 
            can specify the location of the VFiles.
            Current VFile:
            The VFile into which data is currently being 
            Frozen VFile:
            A VFile which is no longer used for collecting 
            data. Only frozen VFiles can be transferred to 
            specified destinations.
            Collection interval:
            A collection interval is associated with a VFile.
            It is the interval of time over which a VFile 
            is used to collect data. 
            This interval of time can be specified by the 
            application. However there are conditions under 
            which a collection interval can be shorter than 
            the specified time. For e.g. a collection 
            interval is prematurely terminated when the 
            maximum size of a VFile is exceeded, or when 
            there is an error condition.
            Polling period:
            A polling period is associated with a data 
            group. It determines the frequency at which 
            the base objects of a data group should
            be fetched and stored into a VFile.
            Data collection operations:
            A generic term used to refer to operations 
            that are carried out while collecting data. 
            These include:
               - Periodically creating new VFiles for 
                 collecting data.
               - Transferring frozen VFiles either 
                 automatically or on demand.
               - Fetching base object values and storing 
                 them into current VFiles, either periodically 
                 or on demand.
               - Deleting frozen VFiles, either periodically 
                 or on demand.

Imported Objects

TEXTUAL-CONVENTION, RowStatus, DisplayString, TruthValue, DateAndTime, RowPointer, VariablePointerSNMPv2-TC
ciscoDataCollectionMIB .
ciscoDataCollMIBNotifs .
cdcVFileCollectionError .
cdcFileXferComplete .
ciscoDataCollMIBObjects .
cdcVFile .
cdcVFilePersistentStorage .
cdcVFileMaxSizeHitsLimit .
cdcVFileTable .
cdcVFileEntry .
cdcVFileIndex .
cdcVFileRetentionPeriod .
cdcVFileAdminStatus .
cdcVFileOperStatus .
cdcVFileErrorCode .
cdcVFileCollectionErrorEnable .
cdcVFileRowStatus .
cdcVFileName .
cdcVFileDescription .
cdcVFileCommand .
cdcVFileMaxSize .
cdcVFileCurrentSize .
cdcVFileFormat .
cdcVFileCollectMode .
cdcVFileCollectionPeriod .
cdcVFileMgmtTable .
cdcVFileMgmtEntry .
cdcVFileMgmtIndex .
cdcVFileMgmtName .
cdcVFileMgmtTimestamp .
cdcVFileMgmtTimeToLive .
cdcVFileMgmtCommand .
cdcVFileMgmtXferURL .
cdcVFileMgmtLastXferStatus .
cdcVFileMgmtLastXferURL .
cdcDataGroup .
cdcDGTable .
cdcDGEntry .
cdcDGIndex .
cdcDGPollPeriod .
cdcDGRowStatus .
cdcDGComment .
cdcDGType .
cdcDGVFileIndex .
cdcDGTargetTag .
cdcDGContextName .
cdcDGObject .
cdcDGObjectGrpIndex .
cdcDGInstGrpIndex .
cdcDGBaseObjectTable .
cdcDGBaseObjectEntry .
cdcDGBaseObjectGrpIndex .
cdcDGBaseObjectIndex .
cdcDGBaseObjectSubtree .
cdcDGBaseObjectList .
cdcDGBaseObjectRowStatus .
cdcDGInstanceTable .
cdcDGInstanceEntry .
cdcDGInstanceGrpIndex .
cdcDGInstanceIndex .
cdcDGInstanceType .
cdcDGInstanceOid .
cdcDGInstanceOidEnd .
cdcDGInstanceNumRepititions .
cdcDGInstanceOtherPtr .
cdcDGInstanceRowStatus .
cdcFileXfer .
cdcFileXferConfTable .
cdcFileXferConfEntry .
cdcFileXferConfPriUrl .
cdcFileXferConfSecUrl .
cdcFileXferConfRetryPeriod .
cdcFileXferConfRetryCount .
cdcFileXferConfSuccessEnable .
cdcFileXferConfFailureEnable .
ciscoDataCollMIBConformance .
ciscoDataCollMIBCompliances .
ciscoDataCollMIBGroups .