Hello,
i try to do some Get-Request on my implemented table and i have got the error
'No Such Instance currently exists at this OID' on some column entries. If i do
an snmptable request or a single snmpget request all data correctly response.
Request:
snmpget -c public localhost 25.3.3.1.1.0x8801 25.3.3.1.2.0x8801
25.3.3.1.3.0x8801 25.3.3.1.4.0x8801 25.3.3.1.5.0x8801 25.3.3.1.6.0x8801
25.3.3.1.7.0x8801 25.3.3.1.8.0x8801
Result:
INDUSOL-MODULAR-INSPEKTOR-MIB::sysModInfo.34817 = STRING: "Modul 1"
INDUSOL-MODULAR-INSPEKTOR-MIB::modIndex.34817 = INTEGER: 136
INDUSOL-MODULAR-INSPEKTOR-MIB::modDescr.34817 = No Such Instance currently
exists at this OID
INDUSOL-MODULAR-INSPEKTOR-MIB::modID.34817 = No Such Instance currently exists
at this OID
INDUSOL-MODULAR-INSPEKTOR-MIB::modOperStatus.34817 = INTEGER: 0
INDUSOL-MODULAR-INSPEKTOR-MIB::modLastChange.34817 = Timeticks: (0) 0:00:00.00
INDUSOL-MODULAR-INSPEKTOR-MIB::modName.34817 = No Such Instance currently
exists at this OID
INDUSOL-MODULAR-INSPEKTOR-MIB::chNumber.34817 = INTEGER: 1
snmptable -c public localhost 25.3.3
sysModInfo modIndex modDescr modID
modOperStatus modLastChange modName chNumber
"v1.36" 136 "Modul 1" "88" 0 0:0:00:00.00
"Profibus-Monitor(DP) (einkanalig) Modul 1" 1
Here is the code of my table handler function:
int
moduleParamTable_handler(
netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests) {
netsnmp_request_info *request;
netsnmp_table_request_info *table_info;
struct moduleParamTable_entry *table_entry;
switch (reqinfo->mode) {
/*
* Read-support (also covers GetNext requests)
*/
case MODE_GET:
for (request=requests; request; request=request->next) {
table_entry = (struct moduleParamTable_entry *)
netsnmp_extract_iterator_context(request);
table_info = netsnmp_extract_table_info( request);
switch (table_info->colnum)
{
case COLUMN_SYSINFO:
if (!table_entry)
{
netsnmp_set_request_error(reqinfo,
request,
SNMP_NOSUCHINSTANCE);
continue;
}
snmp_set_var_typed_value(requests->requestvb,
ASN_OCTET_STR,
table_entry->mod_param.firmware, strlen(
table_entry->mod_param.firmware));
break;
case COLUMN_MODINDEX:
if (!table_entry)
{
netsnmp_set_request_error(reqinfo,
request,
SNMP_NOSUCHINSTANCE);
continue;
}
snmp_set_var_typed_integer(request->requestvb,
ASN_INTEGER,
table_entry->mod_param.modindex);
break;
case COLUMN_MODDESCR:
if (!table_entry)
{
netsnmp_set_request_error(reqinfo,
request,
SNMP_NOSUCHINSTANCE);
continue;
}
snmp_set_var_typed_value(requests->requestvb,
ASN_OCTET_STR,
table_entry->mod_param.writable_param.moddescr, strlen(
table_entry->mod_param.writable_param.moddescr));
break;
case COLUMN_MODID:
if (!table_entry)
{
netsnmp_set_request_error(reqinfo,
request,
SNMP_NOSUCHINSTANCE);
continue;
}
snmp_set_var_typed_value(requests->requestvb,
ASN_OCTET_STR,
table_entry->mod_param.modID,
strlen(
table_entry->mod_param.modID));
break;
case COLUMN_MODOPERSTATUS:
if (!table_entry)
{
netsnmp_set_request_error(reqinfo,
request,
SNMP_NOSUCHINSTANCE);
continue;
}
snmp_set_var_typed_integer(request->requestvb,
ASN_INTEGER,
table_entry->mod_param.modOperStatusCounter);
break;
case COLUMN_MODLASTCHANGE:
if (!table_entry)
{
netsnmp_set_request_error(reqinfo,
request,
SNMP_NOSUCHINSTANCE);
continue;
}
snmp_set_var_typed_integer(request->requestvb,
ASN_TIMETICKS,
(u_long)table_entry->mod_param.modLastChange);
break;
case COLUMN_MODNAME:
if (!table_entry)
{
netsnmp_set_request_error(reqinfo,
request,
SNMP_NOSUCHINSTANCE);
continue;
}
snmp_set_var_typed_value(requests->requestvb,
ASN_OCTET_STR,
table_entry->mod_param.writable_param.modName, strlen(
table_entry->mod_param.writable_param.modName));
break;
case COLUMN_CHCOUNT:
if (!table_entry)
{
netsnmp_set_request_error(reqinfo,
request,
SNMP_NOSUCHINSTANCE);
continue;
}
snmp_set_var_typed_integer(request->requestvb,
ASN_INTEGER,
table_entry->mod_param.channelCount);
break;
default:
netsnmp_set_request_error(reqinfo, request,
SNMP_NOSUCHOBJECT);
break;
}
}
break;
}
return SNMP_ERR_NOERROR;
}
Norman
--
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