All MIBs › IEEE8021-Q-BRIDGE-MIB › ieee8021QBridgeFdbLearnedEntryDiscards
ieee8021QBridgeFdbLearnedEntryDiscards
Module: IEEE8021-Q-BRIDGE-MIB
OID (symbolic): IEEE8021-Q-BRIDGE-MIB::ieee8021QBridgeFdbLearnedEntryDiscards
OID (numeric): 1.3.111.2.802.1.1.4.1.2.1.1.4
Node type: OBJECT-TYPE
Type: Counter64
Access: read-only
Description: The total number of Filtering Database entries that have been or would have been learned, but have been discarded due to a lack of storage space in the Filtering Database. If this counter is increasing, it indicates that the Filtering Database is regularly becoming full (a condition that 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.
Discontinuities in the value of the counter can occur at re-initialization of the management system.
What is ieee8021QBridgeFdbLearnedEntryDiscards?
This OID counts MAC address entries that were discarded because the forwarding database (the switch's memory of which devices are on which ports) ran out of space. It warns that the switch is forgetting device locations because it cannot store more addresses. A network administrator responds by adding more switching capacity or cleaning up old addresses.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.111.2.802.1.1.4.1.2.1.1.4 snmpwalk -v2c -c public <target> IEEE8021-Q-BRIDGE-MIB::ieee8021QBridgeFdbLearnedEntryDiscards
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.111.2.802.1.1.4.1.2.1.1.4.1 snmpget -v2c -c public <target> IEEE8021-Q-BRIDGE-MIB::ieee8021QBridgeFdbLearnedEntryDiscards.1
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OID Breakdown
Upper-level ancestors (3 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.111.2.802.1.1 | ieee802dot1mibs | IEEE8021-TC-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.111.2.802.1.1.4 | ieee8021QBridgeMib | IEEE8021-Q-BRIDGE-MIB |
| 1.3.111.2.802.1.1.4.1 | ieee8021QBridgeMibObjects | IEEE8021-Q-BRIDGE-MIB |
| 1.3.111.2.802.1.1.4.1.2 | ieee8021QBridgeTp | IEEE8021-Q-BRIDGE-MIB |
| 1.3.111.2.802.1.1.4.1.2.1 | ieee8021QBridgeFdbTable | IEEE8021-Q-BRIDGE-MIB |
| 1.3.111.2.802.1.1.4.1.2.1.1 | ieee8021QBridgeFdbEntry | IEEE8021-Q-BRIDGE-MIB |
| 1.3.111.2.802.1.1.4.1.2.1.1.4 | ieee8021QBridgeFdbLearnedEntryDiscards | IEEE8021-Q-BRIDGE-MIB |