13-5
Viewing SNMP Group Information
Total Trap PDUs
The total number of SNMP Trap PDUs which have been accepted and processed
by the SNMP protocol entity, according to snmpInTraps. This counter represents
traps received by a device. A device can not receive traps unless the sending
device’s community names table is set up so that traps are enabled and pointed
toward the receiving station’s IP address.
SNMP Transmit Statistics
The following SNMP group variables are counters which record various
categories of transmitted SNMP messages.
Messages
The total number of SNMP messages which were passed from the SN MP protocol
entity to the transport service, according to snmpOutPkts.
tooBig Errors
The total number of SNMP PDUs which were generated by the SNMP protocol
entity and for which the value of the error-status field is tooBig, according to
snmpOutTooBigs. A tooBig error is often due to a Get-Next operation because the
Get-Next can retrieve a large amount of data. It occurs when the SNMP agent
could not fit the results of an operation into a single SNMP message.
noSuchName Errors
The total number of SNMP PDUs which were generated by the SNMP protocol
entity and for which the value of the error-status is noSuchName, according to the
snmpOutNoSuchNames. The variable name specified in the Set did not exist
according to the community profile. A community profile is the combination of a
community name’s access mode (read-only or read-write) with the subset of MIB
objects (view) defined for the community name.
badValue Errors
The total number of SNMP PDUs which were generated by the SNMP protocol
entity and for which the value of the error-status field is badValue, according to
the snmpOutNoSuchNames. When an incoming Set operation specifies an incorrect
syntax or value, the resulting Get-Response message contains the ‘badValue’ error
status.
genErr Errors
The total number of SNMP PDUs which were generated by the SNMP protocol
entity and for which the value of the error-status is genErr, according to the
snmpOutGenErrs. SNMP tracks messages sent with an error that does not fit any
of the four specific error types: tooBig, noSuchName, badValue, and readOnly.
Total Get-Request PDUs
The total number of SNMP Get-Request PDUs which have been generated by the
SNMP protocol entity, according to the snmpOutGetRequests.