CORE-MIB :: corePortUndersize

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › CORE-MIB › corePortUndersize

corePortUndersize

Module: CORE-MIB

OID (symbolic): CORE-MIB::corePortUndersize

OID (numeric): 1.3.6.1.4.1.629.1.50.9.3.1.37

Node type: OBJECT-TYPE

Type: Counter

Access: read-only

Description: ???

What is corePortUndersize?

This read-only Counter counts undersized, or runt, frames received on a port. This indicates a NIC or cabling problem generating malformed short frames on the segment connected to that port. For example, an admin flags a device attached to a port showing rising corePortUndersize counts for hardware replacement.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.629.1.50.9.3.1.37
snmpwalk -v2c -c public <target> CORE-MIB::corePortUndersize

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.629.1.50.9.3.1.37.1
snmpget -v2c -c public <target> CORE-MIB::corePortUndersize.1

Start monitoring Nbase(-Xyplex) ring-based chassis switch (legacy) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CORE-MIB::corePortUndersize OID value, configure state conditions and alerts, and monitor any Nbase(-Xyplex) ring-based chassis switch (legacy) from a single console.

OID Breakdown

Upper-level ancestors (6 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
Numeric OIDNameModule
1.3.6.1.4.1.629nbaseCORE-MIB
1.3.6.1.4.1.629.1nbSwitchG1CORE-MIB
1.3.6.1.4.1.629.1.50nbSwitchG1IlCORE-MIB
1.3.6.1.4.1.629.1.50.9coreCORE-MIB
1.3.6.1.4.1.629.1.50.9.3corePortTableCORE-MIB
1.3.6.1.4.1.629.1.50.9.3.1corePortEntryCORE-MIB
1.3.6.1.4.1.629.1.50.9.3.1.37corePortUndersizeCORE-MIB