Question: Understanding snmp report/error seen in snmp debugs.



Error/CounterOIDDescriptionComments
usmStatsUnsupportedSecLevels.1.3.6.1.6.3.15.1.1.1The total number of packets received by the SNMPengine which were dropped because they requested a securityLevel that was unknown to the SNMP engine
 or otherwise unavailable.		SNMPv3 request was received for a defined user, but the user was not configured at the FlexVNF to use the security level specified in the request.                                              
admin@FlexVNF> show configuration snmp vacm group 

group access-v3-vuser-internet {
member TESTUSER {
sec-model [ usm ];
}
access any auth-priv {
read-view internet;
notify-view internet;
}
 }      
usmStatsNotInTimeWindows.1.3.6.1.6.3.15.1.1.2The total number of packets received by the SNMPengine which were dropped because they appeared outside of the authoritative SNMP engine's window.Either the NTP is not in-sync on FlexVNF and SNMP server or there is huge(in seconds) delay in networks.
usmStatsUnknownUserNames.1.3.6.1.6.3.15.1.1.3The total number of packets received by the SNMP engine which were dropped because they referenced a user that was not known to the SNMP engine.SNMPv3 request was received for a user that does not exist on FlexVNF.
usmStatsUnknownEngineIDs.1.3.6.1.6.3.15.1.1.4The total number of packets received by the SNMP engine which were dropped because they referenced an snmpEngineID that was not known to the SNMP engine.SNMPv3 request was received with snmp engineID that does not exists on FlexVNF.  

[admin@FlexVNF: ~] $ vsh engine-id
 80:00:a5:77:03:52:54:00:69:c2:8b
usmStatsWrongDigests.1.3.6.1.6.3.15.1.1.5The total number of packets received by the SNMP engine which were dropped because they didn't contain the expected digest value.SNMPv3 request received with the authentication key sent by an snmp server did not match the key defined on the FlexVNF
usmStatsDecryptionErrors.1.3.6.1.6.3.15.1.1.6The total number of packets received by the SNMP engine which were dropped because they could not be decrypted.SNMPv3 request could not be decrypted on FlexVNF,This can be the result of an invalid privacy key.