MPIOS-MIB :: sysIfInUnkownProtos

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

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sysIfInUnkownProtos

Module: MPIOS-MIB

OID (symbolic): MPIOS-MIB::sysIfInUnkownProtos

OID (numeric): 1.3.6.1.4.1.5651.3.20.1.1.300.1.100.1.9

Node type: OBJECT-TYPE

Type: Counter

Access: read-only

Description: The number of packets received via the interface which were discarded because of an unknown or unsupported protocol.

What is sysIfInUnkownProtos?

This is a running counter of inbound packets at this row's IP precedence level that were discarded because they used an unknown or unsupported protocol. An admin sees this rise when unexpected or unsupported traffic types are arriving on the interface.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.5651.3.20.1.1.300.1.100.1.9
snmpwalk -v2c -c public <target> MPIOS-MIB::sysIfInUnkownProtos

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.5651.3.20.1.1.300.1.100.1.9.1
snmpget -v2c -c public <target> MPIOS-MIB::sysIfInUnkownProtos.1

Start monitoring Maipu MP2600 router with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the MPIOS-MIB::sysIfInUnkownProtos OID value, configure state conditions and alerts, and monitor any Maipu MP2600 router from a single console.

OID Breakdown

Upper-level ancestors (8 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.5651maipuMAIPU-SMI
1.3.6.1.4.1.5651.3mpMgmtMAIPU-SMI
Numeric OIDNameModule
1.3.6.1.4.1.5651.3.20mpiosMPIOS-MIB
1.3.6.1.4.1.5651.3.20.1iosSystemMPIOS-MIB
1.3.6.1.4.1.5651.3.20.1.1iosObjectsMPIOS-MIB
1.3.6.1.4.1.5651.3.20.1.1.300sysIfStatisticMPIOS-MIB
1.3.6.1.4.1.5651.3.20.1.1.300.1sysIfPktPriStatisticsMPIOS-MIB
1.3.6.1.4.1.5651.3.20.1.1.300.1.100sysIfPktPriStaTableMPIOS-MIB
1.3.6.1.4.1.5651.3.20.1.1.300.1.100.1sysIfPktPriStaEntryMPIOS-MIB
1.3.6.1.4.1.5651.3.20.1.1.300.1.100.1.9sysIfInUnkownProtosMPIOS-MIB