Nortel-Magellan-Passport-AtmBaseMIB :: lpEngArcTxCellMemoryMaxUsage

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › Nortel-Magellan-Passport-AtmBaseMIB › lpEngArcTxCellMemoryMaxUsage

lpEngArcTxCellMemoryMaxUsage

Module: Nortel-Magellan-Passport-AtmBaseMIB

OID (symbolic): Nortel-Magellan-Passport-AtmBaseMIB::lpEngArcTxCellMemoryMaxUsage

OID (numeric): 1.3.6.1.4.1.562.2.4.1.12.23.5.10.1.13

Node type: OBJECT-TYPE

Type: Gauge32

Access: read-only

Description: This attribute indicates the maximum number which has recently occurred for the txCellMemoryUsage attribute.

On CQC-based ATM FPs, this number indicates the maximum usage of transmit cells for all ports on this FP.

On ATM IP FPs, this number indicates the maximum usage of transmit cells in the Passport Queue Controller (PQC) ASIC. Queuing of ATM cells for transmit normally occurs in the ATM Queue Manager (AQM) ASIC, which is indicated in the Lp Eng Arc Aqm/x txCellMemoryUsage attribute. Transmit cells should only be queued in the PQC under circumstances of extreme transient congestion.

This value is reset to the current usage every 15 minutes and when the card is reset.

What is lpEngArcTxCellMemoryMaxUsage?

Reports the peak transmit cell usage recorded since the last 15-minute reset window or card reset; on CQC-based ATM FPs this covers all ports, while on ATM IP FPs it reflects the PQC ASIC (normal transmit queueing instead happens in the AQM ASIC, reported separately).

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.562.2.4.1.12.23.5.10.1.13
snmpwalk -v2c -c public <target> Nortel-Magellan-Passport-AtmBaseMIB::lpEngArcTxCellMemoryMaxUsage

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.562.2.4.1.12.23.5.10.1.13.1
snmpget -v2c -c public <target> Nortel-Magellan-Passport-AtmBaseMIB::lpEngArcTxCellMemoryMaxUsage.1

Start monitoring Nortel Magellan Passport ATM WAN switch (base ATM interface) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the Nortel-Magellan-Passport-AtmBaseMIB::lpEngArcTxCellMemoryMaxUsage OID value, configure state conditions and alerts, and monitor any Nortel Magellan Passport ATM WAN switch (base ATM interface) from a single console.

OID Breakdown

Upper-level ancestors (12 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
1.3.6.1.4.1.562nortelCPM-NORTEL-MIB
1.3.6.1.4.1.562.2magellanNortel-Magellan-Passport-UsefulDefinitionsMIB
1.3.6.1.4.1.562.2.4passportNortel-Magellan-Passport-UsefulDefinitionsMIB
1.3.6.1.4.1.562.2.4.1componentsNortel-Magellan-Passport-UsefulDefinitionsMIB
1.3.6.1.4.1.562.2.4.1.12lpNortel-Magellan-Passport-LogicalProcessorMIB
1.3.6.1.4.1.562.2.4.1.12.23lpEngNortel-Magellan-Passport-LogicalProcessorMIB
Numeric OIDNameModule
1.3.6.1.4.1.562.2.4.1.12.23.5lpEngArcNortel-Magellan-Passport-AtmBaseMIB
1.3.6.1.4.1.562.2.4.1.12.23.5.10lpEngArcOperTableNortel-Magellan-Passport-AtmBaseMIB
1.3.6.1.4.1.562.2.4.1.12.23.5.10.1lpEngArcOperEntryNortel-Magellan-Passport-AtmBaseMIB
1.3.6.1.4.1.562.2.4.1.12.23.5.10.1.13lpEngArcTxCellMemoryMaxUsageNortel-Magellan-Passport-AtmBaseMIB