1. Host Resources MIB - RFC 2790
Yen-Cheng Chen
IM, NCNU

2. MIBs Supported in Windows XP
MIB-II (RFC 1213)
Host Resource MIB (RFC 2790)
LAN Manager MIB-II ( )
Microsoft DHCP server MIB ( )
Microsoft Internet Information Server MIB ( )
Microsoft WINS server MIB ( )
 Using SNMP for Network Management
 MIB Object Types for Windows NT

3. References RFCs Modules: RFC 2790: Host Resources MIB
HOST-RESOURCES-MIB ( HR-MIB )
HOST-RESOURCES-TYPES ( HR-TYPES )
Lab. Files (php)
Lab. Files (Java projects):
snmpwalk.java, getTable.java

4. Management of Host Computers
Host Resources MIB defines a uniform set of objects useful for the management of host computers.
Objects which also provide host management functionality.
system group in SNMPv2-MIB [RFC1907]
interfaces group IF-MIB [RFC2233]

5. Groups of Host Resources MIB
host OBJECT IDENTIFIER ::= { mib-2 25 }
6 Groups:
hrSystem OBJECT IDENTIFIER ::= { host 1 }
hrStorage OBJECT IDENTIFIER ::= { host 2 }
hrDevice OBJECT IDENTIFIER ::= { host 3 }
hrSWRun OBJECT IDENTIFIER ::= { host 4 }
hrSWRunPerf OBJECT IDENTIFIER ::= { host 5 }
hrSWInstalled OBJECT IDENTIFIER ::= { host 6 }
hrMIBAdminInfo OBJECT IDENTIFIER ::= { host 7 }

6. 1. hrSystem: HR System Group
hrSystemUptime { hrSystem 1 }
hrSystemDate { hrSystem 2 }
hrSystemInitialLoadDevice { hrSystem 3 }
hrSystemInitialLoadParameters { hrSystem 4 }
hrSystemNumUsers { hrSystem 5 }
hrSystemProcesses { hrSystem 6 }
hrSystemMaxProcesses { hrSystem 7 }
Index of the hrDeviceEntry

7. hrSystem Example host.hrSystem.hrSystemUptime.0:
java snmpwalk –c community –m HR-MIB hrSystem
host.hrSystem.hrSystemUptime.0:
14 days, 17 hours, 10 minutes, 28 seconds.
host.hrSystem.hrSystemDate.0: ,9:55:14.0
host.hrSystem.hrSystemInitialLoadDevice.0: 0
host.hrSystem.hrSystemInitialLoadParameters.0:
host.hrSystem.hrSystemNumUsers.0: 2
host.hrSystem.hrSystemProcesses.0: 66
host.hrSystem.hrSystemMaxProcesses.0: 0

8. 2. hrStorage: HR Storage Group
(Oid) hrStorageTypes { hrStorage 1 }
hrMemorySize { hrStorage 2 }
hrStorageTable { hrStorage 3 }
hrStorageEntry { hrStorageTable 1 }
hrStorageIndex { hrStorageEntry 1 }
hrStorageType { hrStorageEntry 2 }
hrStorageDescr { hrStorageEntry 3 }
hrStorageAllocationUnits { hrStorageEntry 4 }
hrStorageSize { hrStorageEntry 5 }
hrStorageUsed { hrStorageEntry 6 }
hrStorageAllocationFailures { hrStorageEntry 7 }
(Size of RAM in Kbytes)

9. hrStorage Example host.hrStorage.hrMemorySize.0: 1031472 (KBytes)
≒ 0.98 GBytes
(bytes)
java getTable community hrStorageTable “HR-MIB HR-TYPES”
> hrStorageTable.html

10. Php Example: realtable.php <?php snmp_set_quick_print(true);
snmp_read_mib("hrTypes.txt");
$host = " ";
$community = "public";
$oid = "HOST-RESOURCES-MIB::hrStorageTable";
$arr = realtable($host, $community, $oid, 7); …
?>
C:\usr\mibs\HOST-RESOURCES-TYPES.txt

11. Example hrStorageDescr: hrStorageAllocationUnits: 4096 hrStorageSize:
hrStorageUsed:
Disk Capacity: (bytes)
* 4096 =
Available Disk Space: (%)
( )/ *100% = 58.6 %

12. 3. hrDevice: HR Device Group
(Oid) hrDeviceTypes { hrDevice 1 }
hrDeviceTable { hrDevice 2 }
hrProcessorTable { hrDevice 3 }
hrNetworkTable { hrDevice 4 }
hrPrinterTable { hrDevice 5 }
hrDiskStorageTable { hrDevice 6 }
hrPartitionTable { hrDevice 7 }
hrFSTable { hrDevice 8 }

13. hrDeviceTable - The table of devices contained by the host
hrDeviceTable { hrDevice 2 }
hrDeviceEntry { hrDeviceTable 1 }
hrDeviceIndex { hrDeviceEntry 1 }
hrDeviceType { hrDeviceEntry 2 }
hrDeviceDescr { hrDeviceEntry 3 }
hrDeviceID { hrDeviceEntry 4 }
hrDeviceStatus { hrDeviceEntry 5 }
hrDeviceErrors { hrDeviceEntry 6 }

14. hrDeviceTable Example

15. hrProcessorTable hrProcessorFrwID { hrProcessorEntry 1 }
- The table of processors
hrProcessorTable { hrDevice 3 }
hrProcessorEntry { hrProcessorTable 1 }
hrProcessorFrwID { hrProcessorEntry 1 }
- Product ID of Firmware
hrProcessorLoad { hrProcessorEntry 2 }
- The average, over the last minute, of the percentage of time that this processor was not idle.
hrDeviceIndex

16. hrNetworkTable - The table of network devices ifTable:
hrNetworkTable { hrDevice 4 }
hrNetworkEntry { hrNetworkTable 1 }
hrNetworkIfIndex { hrNetworkEntry 1 }
hrDeviceIndex
ifTable:

17. hrPrinterTable hrPrinterTable { hrDevice 5 }
hrPrinterEntry { hrPrinterTable 1 }
hrPrinterStatus { hrPrinterEntry 1 }
hrPrinterDetectedErrorState { hrPrinterEntry 2 }
other(1), unknown(2), idle(3), printing(4), warmup(5)
Bits:
0: lowPaper
1: noPaper
2: lowToner
3: noToner
4: doorOpen
5: jammed
6: offline
7: serviceRequested
8: inputTrayMissing
9: outputTrayMissing
10: markerSupplyMissing : outputNearFull
12: outputFull
13: inputTrayEmpty
14: overduePreventMaint

18. hrDiskStorageTable - The table of long-term storage devices
hrDiskStorageTable { hrDevice 6 }
hrDiskStorageEntry { hrDiskStorageTable 1 }
hrDiskStorageAccess { hrDiskStorageEntry 1 }
hrDiskStorageMedia { hrDiskStorageEntry 2 }
hrDiskStorageRemoveble { hrDiskStorageEntry 3 }
hrDiskStorageCapacity { hrDiskStorageEntry 4 }

19. hrDiskStorageTable Example
KBytes
hrDeviceIndex

20. hrPartitionTable hrPartitionTable { hrDevice 7 }
- The table of partitions for long-term storage devices
hrPartitionTable { hrDevice 7 }
hrPartitionEntry { hrPartitionTable 1 }
hrPartitionIndex { hrPartitionEntry 1 }
hrPartitionLabel { hrPartitionEntry 2 }
hrPartitionID { hrPartitionEntry 3 }
hrPartitionSize { hrPartitionEntry 4 }
hrPartitionFSIndex { hrPartitionEntry 5 }
FS: File System

21. hrPartitionTable Example
KBytes
hrDeviceIndex
hrPartitionIndex 1 2 3 4 5

22. hrFSTable - The table of file systems local or remotely mounted
hrFSTable { hrDevice 8 }
hrFSEntry { hrFSTable 1 }
hrFSIndex { hrFSEntry 1 }
hrFSMountPoint { hrFSEntry 2}
hrFSRemoteMountPoint { hrFSEntry 3 }
hrFSType { hrFSEntry 4 }
hrFSAccess { hrFSEntry 5 }
hrFSBootable { hrFSEntry 6 }
hrFSStorageIndex { hrFSEntry 7 }
hrFSLastFullBackupDate { hrFSEntry 8 }
hrFSLastPartialBackupDate { hrFSEntry 9 }

23. hrFSTable Example
January 1, year 0000, 00:00:00.0

24. 4. hrSWRun: HR Running Software Group
hrSWOSIndex { hrSWRun 1 }
hrSWRunTable { hrSWRun 2 }
hrSWRunEntry { hrSWRunTable 1 }
hrSWRunIndex { hrSWRunEntry 1 }
hrSWRunName { hrSWRunEntry 2 }
hrSWRunID { hrSWRunEntry 3 }
hrSWRunPath { hrSWRunEntry 4 }
hrSWRunParameters { hrSWRunEntry 5 }
hrSWRunType { hrSWRunEntry 6 }
hrSWRunStatus { hrSWRunEntry 7 }
unknown(1), operatingSystem(2), deviceDriver(3), application(4)
running(1), runnable(2),
notRunnable(3),
invalid(4)
hrSWRunType:
hrSWRunStatus:

25. hrSWRunTable Example - The table of software running on the host
hrSWRun.hrSWOSIndex.0: 4

26. 5. hrSWRunPerf: HR Running Software Performance Group
hrSWRunPerfTable { hrSWRunPerf 1 }
hrSWRunPerfEntry { hrSWRunPerfTable 1 }
hrSWRunPerfCPU { hrSWRunPerfEntry 1 }
- Number of centi-seconds of the CPU resources
consumed by this process.
hrSWRunPerfMem { hrSWRunPerfEntry 2 }
- The total amount of real system memory allocated to
this process. (in Kbytes)
- The table of running software performance metrics

27. hrSWRunPerfTable Example
hrSWRunTable =

28. 6. hrSWInstalled: HR Installed Software Group
hrSWInstalledLastChange
hrSWInstalledLastUpdateTime
hrSWInstalledTable
hrSWInstalledEntry
hrSWInstalledIndex
hrSWInstalledName
hrSWInstalledID
hrSWInstalledType
hrSWInstalledDate
{ hrSWInstalled 1 } { hrSWInstalled 2 } { hrSWInstalled 3 } { hrSWInstalledTable 1 }
{ hrSWInstalledEntry 1 } { hrSWInstalledEntry 2 } { hrSWInstalledEntry 3 } { hrSWInstalledEntry 4 } { hrSWInstalledEntry 5 }
unknown(1), operatingSystem(2), deviceDriver(3), application(4)

29. hrSWInstalledTable Example