PDN-HDLC-MIB :: pdnHdlcStatsTotalTxBufUnderrun

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › PDN-HDLC-MIB › pdnHdlcStatsTotalTxBufUnderrun

pdnHdlcStatsTotalTxBufUnderrun

Module: PDN-HDLC-MIB

OID (symbolic): PDN-HDLC-MIB::pdnHdlcStatsTotalTxBufUnderrun

OID (numeric): 1.3.6.1.4.1.1795.2.24.2.6.26.1.1.1.9

Node type: OBJECT-TYPE

Type: Counter32

Access: read-only

Description: The number of times a transmitter underrun occurred.

What is pdnHdlcStatsTotalTxBufUnderrun?

This read-only counter tracks the number of times a transmitter underrun occurred on this interface. An admin monitors it to detect the transmit hardware running out of data to send fast enough, a lower-level condition that can indicate a driver or bus performance issue. For example, a climbing count here on a heavily loaded interface would suggest the device's transmit pipeline cannot keep the HDLC framer fed fast enough, worth investigating alongside overall CPU or bus load.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.1795.2.24.2.6.26.1.1.1.9
snmpwalk -v2c -c public <target> PDN-HDLC-MIB::pdnHdlcStatsTotalTxBufUnderrun

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.1795.2.24.2.6.26.1.1.1.9.1
snmpget -v2c -c public <target> PDN-HDLC-MIB::pdnHdlcStatsTotalTxBufUnderrun.1

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OID Breakdown

Upper-level ancestors (11 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
1.3.6.1.4.1.1795pdynPDN-HEADER-MIB
1.3.6.1.4.1.1795.2pdn_mgmtPDN-HEADER-MIB
1.3.6.1.4.1.1795.2.24paradynePDN-HEADER-MIB
1.3.6.1.4.1.1795.2.24.2pdn_commonPDN-HEADER-MIB
1.3.6.1.4.1.1795.2.24.2.6pdn_interfacesPDN-HEADER-MIB
Numeric OIDNameModule
1.3.6.1.4.1.1795.2.24.2.6.26pdnHdlcMIBPDN-HDLC-MIB
1.3.6.1.4.1.1795.2.24.2.6.26.1pdnHdlcObjectsPDN-HDLC-MIB
1.3.6.1.4.1.1795.2.24.2.6.26.1.1pdnHdlcStatsTotalTablePDN-HDLC-MIB
1.3.6.1.4.1.1795.2.24.2.6.26.1.1.1pdnHdlcStatsTotalEntryPDN-HDLC-MIB
1.3.6.1.4.1.1795.2.24.2.6.26.1.1.1.9pdnHdlcStatsTotalTxBufUnderrunPDN-HDLC-MIB