All MIBs › CM-PERFORMANCE-MIB › cmFlowPointHistoryNumLearnTableFlushes
cmFlowPointHistoryNumLearnTableFlushes
Module: CM-PERFORMANCE-MIB
OID (symbolic): CM-PERFORMANCE-MIB::cmFlowPointHistoryNumLearnTableFlushes
OID (numeric): 1.3.6.1.4.1.2544.1.12.5.1.26.1.34
Node type: OBJECT-TYPE
Type: PerfCounter64
Access: read-only
Description: The number of learning table flushes.
What is cmFlowPointHistoryNumLearnTableFlushes?
This read-only PerfCounter64 counts how many times the MAC address learning table associated with this flow point was flushed during the interval. Frequent flushes matter to an administrator because they force the flow point to relearn source MAC addresses via flooding, which can cause transient traffic loss or duplication until addresses are relearned. For example, a spike in cmFlowPointHistoryNumLearnTableFlushes correlating with reports of brief connectivity blips would point toward a topology change or protection switch repeatedly clearing the learning table.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.2544.1.12.5.1.26.1.34 snmpwalk -v2c -c public <target> CM-PERFORMANCE-MIB::cmFlowPointHistoryNumLearnTableFlushes
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.2544.1.12.5.1.26.1.34.1 snmpget -v2c -c public <target> CM-PERFORMANCE-MIB::cmFlowPointHistoryNumLearnTableFlushes.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> cmFlowPointHistoryNumLearnTableFlushes.1
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OID Breakdown
Upper-level ancestors (9 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.2544 | advaMIB | ADVA-MIB |
| 1.3.6.1.4.1.2544.1 | products | ADVA-MIB |
| 1.3.6.1.4.1.2544.1.12 | fsp150cm | ADVA-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.2544.1.12.5 | cmPerformanceMIB | CM-PERFORMANCE-MIB |
| 1.3.6.1.4.1.2544.1.12.5.1 | cmPerfObjects | CM-PERFORMANCE-MIB |
| 1.3.6.1.4.1.2544.1.12.5.1.26 | cmFlowPointHistoryTable | CM-PERFORMANCE-MIB |
| 1.3.6.1.4.1.2544.1.12.5.1.26.1 | cmFlowPointHistoryEntry | CM-PERFORMANCE-MIB |
| 1.3.6.1.4.1.2544.1.12.5.1.26.1.34 | cmFlowPointHistoryNumLearnTableFlushes | CM-PERFORMANCE-MIB |