All MIBs › SNMP-USER-BASED-SM-MIB › usmStatsUnknownEngineIDs
usmStatsUnknownEngineIDs
Module: SNMP-USER-BASED-SM-MIB
OID (symbolic): SNMP-USER-BASED-SM-MIB::usmStatsUnknownEngineIDs
OID (numeric): 1.3.6.1.6.3.15.1.1.4
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 referenced an snmpEngineID that was not known to the SNMP engine.
What is usmStatsUnknownEngineIDs?
This Counter32 counts packets dropped because they carried an snmpEngineID the receiving SNMP engine does not recognize as its own or as a known remote engine. It surfaces during SNMPv3 discovery problems, such as a manager caching a stale engineID after a device's engine ID was regenerated on reboot or reconfiguration. An admin troubleshooting a suddenly-unreachable SNMPv3 target would check this counter to confirm the manager needs to rediscover the device's current engineID.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.6.3.15.1.1.4 snmpwalk -v2c -c public <target> SNMP-USER-BASED-SM-MIB::usmStatsUnknownEngineIDs
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.6.3.15.1.1.4.1 snmpget -v2c -c public <target> SNMP-USER-BASED-SM-MIB::usmStatsUnknownEngineIDs.1
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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 |
| 1.3.6.1.6.3.15.1.1.4 | usmStatsUnknownEngineIDs | SNMP-USER-BASED-SM-MIB |