A3COM-PORTPATH-R6-MIB :: a3ComPathInUnknownProtos

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsA3COM-PORTPATH-R6-MIBa3ComPathInUnknownProtos

a3ComPathInUnknownProtos

Module: A3COM-PORTPATH-R6-MIB

OID (symbolic): A3COM-PORTPATH-R6-MIB::a3ComPathInUnknownProtos

OID (numeric): 1.3.6.1.4.1.43.2.16.2.1.21

Node type: OBJECT-TYPE

Type: Counter

Access: read-only

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

What is a3ComPathInUnknownProtos?

This read-only Counter counts packets received with unrecognized or unsupported protocol numbers in headers. It detects misconfigured neighbors or security attacks using bogus protocols. Typical values remain 0; sudden increases suggest rogue devices on the network.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.43.2.16.2.1.21
snmpwalk -v2c -c public <target> A3COM-PORTPATH-R6-MIB::a3ComPathInUnknownProtos

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.43.2.16.2.1.21.1
snmpget -v2c -c public <target> A3COM-PORTPATH-R6-MIB::a3ComPathInUnknownProtos.1

Start monitoring Legacy 3Com routers/switches (R6, T1/WAN) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the A3COM-PORTPATH-R6-MIB::a3ComPathInUnknownProtos OID value, configure state conditions and alerts, and monitor any Legacy 3Com routers/switches (R6, T1/WAN) 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
1.3.6.1.4.1.43a3ComA3COM-BRIDGE-R3-MIB
1.3.6.1.4.1.43.2brouterMIBA3COM-BRIDGE-R3-MIB
Numeric OIDNameModule
1.3.6.1.4.1.43.2.16a3ComPathA3COM-PORTPATH-R6-MIB
1.3.6.1.4.1.43.2.16.2a3ComPathTableA3COM-PORTPATH-R6-MIB
1.3.6.1.4.1.43.2.16.2.1a3ComPathEntryA3COM-PORTPATH-R6-MIB
1.3.6.1.4.1.43.2.16.2.1.21a3ComPathInUnknownProtosA3COM-PORTPATH-R6-MIB