Hi,
There is no "correct" maxRepetitions. Any value is "correct".
The agent decides how many repetitions it will provide based on
local contraints and measures. Some agent never return more
than one, others up to the maximum packet size, others by
timing constraints.
Thus, you can never know how many repetitions there will be returned.
BTW, OIDs do NOT start with a dot character. Simply
write
new OID("1.3.6.1.2.1.47.1.1.1.1.1")
Best regards,
Frank
Am 03.04.2014 07:11, schrieb Tongjie Li:
Hi everybody
I was executing a getTable in snmp4j on entitymib. I defined the
following columns like following sample code
public static OID[] getColumnOIDs() {
if (equipmentColumns != null) return equipmentColumns;
equipmentColumns = new OID[11];
equipmentColumns[0] = new OID(".1.3.6.1.2.1.47.1.1.1.1.1");
//entPhysicalIndex
equipmentColumns[1] = new OID(".1.3.6.1.2.1.47.1.1.1.1.2");
//entPhysicalDescr
equipmentColumns[2] = new OID(".1.3.6.1.2.1.47.1.1.1.1.3");
//entPhysicalVendorType
equipmentColumns[3] = new OID(".1.3.6.1.2.1.47.1.1.1.1.4");
//entPhysicalContainedIn
equipmentColumns[4] = new OID(".1.3.6.1.2.1.47.1.1.1.1.5");
//entPhysicalClass
equipmentColumns[5] = new OID(".1.3.6.1.2.1.47.1.1.1.1.6");
//entPhysicalParentRelPos
equipmentColumns[6] = new OID(".1.3.6.1.2.1.47.1.1.1.1.7");
//entPhysicalName
equipmentColumns[7] = new OID(".1.3.6.1.2.1.47.1.1.1.1.13");
//entPhysicalModelName
equipmentColumns[8] = new OID(".1.3.6.1.2.1.47.1.1.1.1.14");
//entPhysicalAlias
equipmentColumns[9] = new OID(".1.3.6.1.2.1.47.1.1.1.1.16");
//entPhysicalFru if is fixed
equipmentColumns[10] = new
OID(".1.3.6.1.2.1.47.1.1.1.1.11");//entPhysicalSerialNum
return equipmentColumns;
}
when I using it with getTable in the snmp4j with following code (
the columnOIDs are equipmentColumns from above example)
public List snmpGetTable(OID[] columnOIDs, OID lowerBoundIndex, OID
upperBoundIndex) throws IOException {
List result = null;
TableUtils tableUtils = new TableUtils(this.snmp, new
DefaultPDUFactory(PDU.GETBULK));
tableUtils.setMaxNumRowsPerPDU(maxRepetitions);
result = tableUtils.getTable(this.comtarget, columnOIDs,
lowerBoundIndex, upperBoundIndex);
return result;
}
When i test it,I found that setting different maxRepetitions will get
different answers. When I set maxRepetitions to 4
,it return total number of 1428 records. When I set maxRepetitions to 10,
it return total number of 1518 records. When set to 20,it return total
number of 1528 records. It made me very crazy.
I want to know why and how to set the right maxRepetitions in order to
avoid this. It seems that different types of device need to set different
maxRepetitions. Is there a way to calculate the correct maxRepetitions ?
Best regards
--
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