All MIBs › DEC-ElanConc › eMACTransmitUnderruns
eMACTransmitUnderruns
Module: DEC-ElanConc
OID (symbolic): DEC-ElanConc::eMACTransmitUnderruns
OID (numeric): 1.3.6.1.4.1.36.2.18.1.1.2.1.1.21
Node type: OBJECT-TYPE
Type: Counter
Access: read-only
Description: The number oftimes an underrun occured because the device's transmit FIFO became empty due to insufficient memory. In other words, the device was trying to transmit but could not get into memory fast enough.
What is eMACTransmitUnderruns?
Counts times the device's transmit FIFO ran dry mid-frame because it could not pull data from memory fast enough. Frequent underruns point to a device that is overloaded or memory-starved relative to the FDDI line rate it is trying to sustain.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.36.2.18.1.1.2.1.1.21 snmpwalk -v2c -c public <target> DEC-ElanConc::eMACTransmitUnderruns
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.36.2.18.1.1.2.1.1.21.1 snmpget -v2c -c public <target> DEC-ElanConc::eMACTransmitUnderruns.1
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OID Breakdown
Upper-level ancestors (14 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 |
| 1.3.6.1.4.1.36 | dec | CMU-MIB |
| 1.3.6.1.4.1.36.2 | ema | DEC-ATM-CHASSIS-MIB |
| 1.3.6.1.4.1.36.2.18 | decMIBextension | DEC-ATM-CHASSIS-MIB |
| 1.3.6.1.4.1.36.2.18.1 | elanext | DEC-ELAN-MIB |
| 1.3.6.1.4.1.36.2.18.1.1 | efddi | DEC-ELAN-MIB |
| 1.3.6.1.4.1.36.2.18.1.1.2 | efddiMAC | DEC-ELAN-MIB |
| 1.3.6.1.4.1.36.2.18.1.1.2.1 | efddiMACTable | DEC-ELAN-MIB |
| 1.3.6.1.4.1.36.2.18.1.1.2.1.1 | efddiMACEntry | DEC-ELAN-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.36.2.18.1.1.2.1.1.21 | eMACTransmitUnderruns | DEC-ElanConc |