All MIBs › SNMPv2-MIB › snmpInBadVersions
snmpInBadVersions
Module: SNMPv2-MIB
OID (symbolic): SNMPv2-MIB::snmpInBadVersions
OID (numeric): 1.3.6.1.2.1.11.3
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description:
The total number of SNMP messages which were delivered to the SNMP entity and were for an unsupported SNMP version.
What is snmpInBadVersions?
This is a running count of SNMP messages that arrived with an unsupported protocol version (for example, SNMPv4 on a device that only supports SNMPv1 and v2c). Network engineers use it to detect misconfigurations in monitoring tools or unauthorized SNMP clients. If this counter is climbing, it suggests someone is trying to query the device with the wrong SNMP version.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.11.3 snmpwalk -v2c -c public <target> SNMPv2-MIB::snmpInBadVersions
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.11.3.1 snmpget -v2c -c public <target> SNMPv2-MIB::snmpInBadVersions.1