All MIBs › SNMP-USER-BASED-SM-MIB › usmStatsWrongDigests
usmStatsWrongDigests
Module: SNMP-USER-BASED-SM-MIB
OID (symbolic): SNMP-USER-BASED-SM-MIB::usmStatsWrongDigests
OID (numeric): 1.3.6.1.6.3.15.1.1.5
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: The total number of packets received by the SNMP engine which were dropped because they didn't contain the expected digest value.
What is usmStatsWrongDigests?
This Counter32 counts SNMP packets rejected because their authentication digest did not match what the engine computed, meaning the message failed verification under the user's usmUserAuthProtocol. It typically climbs when a manager is using the wrong authentication passphrase or key for a user, or when message contents were altered in transit. Seeing this counter increase right after an SNMPv3 password change usually means one poller still has the old auth key configured.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.6.3.15.1.1.5 snmpwalk -v2c -c public <target> SNMP-USER-BASED-SM-MIB::usmStatsWrongDigests
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.6.3.15.1.1.5.1 snmpget -v2c -c public <target> SNMP-USER-BASED-SM-MIB::usmStatsWrongDigests.1
Start monitoring vendor-neutral, standards-based MIB, any device or host running an SNMPv3 agent (USM user credentials/security-violation counters) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the SNMP-USER-BASED-SM-MIB::usmStatsWrongDigests OID value, configure state conditions and alerts, and monitor any vendor-neutral, standards-based MIB, any device or host running an SNMPv3 agent (USM user credentials/security-violation counters) from a single console.
OID Breakdown
Upper-level ancestors (6 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.6 | snmpV2 | DASAN-DHCP-MIB |
| 1.3.6.1.6.3 | snmpModules | RAPID-CITY |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.6.3.15 | snmpUsmMIB | SNMP-USER-BASED-SM-MIB |
| 1.3.6.1.6.3.15.1 | usmMIBObjects | SNMP-USER-BASED-SM-MIB |
| 1.3.6.1.6.3.15.1.1 | usmStats | SNMP-USER-BASED-SM-MIB |
| 1.3.6.1.6.3.15.1.1.5 | usmStatsWrongDigests | SNMP-USER-BASED-SM-MIB |