IBM-LAN-EMULATION-EXTENSION-MIB :: ibmSEMacLearnedEntryDiscards

MIB Reference — IPNetwork Monitor · Updated October 05, 2026

All MIBs › IBM-LAN-EMULATION-EXTENSION-MIB › ibmSEMacLearnedEntryDiscards

ibmSEMacLearnedEntryDiscards

Module: IBM-LAN-EMULATION-EXTENSION-MIB

OID (symbolic): IBM-LAN-EMULATION-EXTENSION-MIB::ibmSEMacLearnedEntryDiscards

OID (numeric): 1.3.6.1.4.1.2.5.8.4.1.4.1.12

Node type: OBJECT-TYPE

Type: Counter32

Access: read-only

Description: The total number of Mac Forwarding Database entries, which have been or would have been learnt, but have been discarded due to a lack of space to store them in the Forwarding Database. If this counter is increasing, it indicates that the Forwarding Database is regularly becoming full (a condition which has unpleasant performance effects on the subnetwork). If this counter has a significant value but is not presently increasing, it indicates that the problem has been occurring but is not persistent.

What is ibmSEMacLearnedEntryDiscards?

A counter of MAC forwarding-database entries that were dropped, or would have been learned but couldn't be, due to a lack of table space; a steadily increasing value signals the forwarding database is regularly filling up, which hurts subnet performance.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2.5.8.4.1.4.1.12
snmpwalk -v2c -c public <target> IBM-LAN-EMULATION-EXTENSION-MIB::ibmSEMacLearnedEntryDiscards

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.2.5.8.4.1.4.1.12.1
snmpget -v2c -c public <target> IBM-LAN-EMULATION-EXTENSION-MIB::ibmSEMacLearnedEntryDiscards.1

Start monitoring IBM ATM LAN Emulation server (LECS/LES/BUS instance monitoring) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the IBM-LAN-EMULATION-EXTENSION-MIB::ibmSEMacLearnedEntryDiscards OID value, configure state conditions and alerts, and monitor any IBM ATM LAN Emulation server (LECS/LES/BUS instance monitoring) 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
1.3.6.1.4.1.2ibmATM-ADAPTER-MIB
1.3.6.1.4.1.2.5ibmArchitectureIBM-FEATURE-ACTIVATION-MIB
Numeric OIDNameModule
1.3.6.1.4.1.2.5.8lanEmulationIBM-LAN-EMULATION-EXTENSION-MIB
1.3.6.1.4.1.2.5.8.4ibmLeClientXIBM-LAN-EMULATION-EXTENSION-MIB
1.3.6.1.4.1.2.5.8.4.1ibmSuperELANIBM-LAN-EMULATION-EXTENSION-MIB
1.3.6.1.4.1.2.5.8.4.1.4ibmSEBridgeTableIBM-LAN-EMULATION-EXTENSION-MIB
1.3.6.1.4.1.2.5.8.4.1.4.1ibmSEBridgeEntryIBM-LAN-EMULATION-EXTENSION-MIB
1.3.6.1.4.1.2.5.8.4.1.4.1.12ibmSEMacLearnedEntryDiscardsIBM-LAN-EMULATION-EXTENSION-MIB