NTWS-SYSTEM-MIB

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Organization: Nortel Networks

Last Updated: 2007-08-31

Category: Nortel WLAN

Description: Manages system-level configuration, CPU load, memory utilization, and software version on Nortel NTWS controllers.

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What Is NTWS-SYSTEM-MIB?

NTWS-SYSTEM-MIB is a Nortel Networks enterprise MIB for the NTWS wireless LAN switch/controller platform, covering system-level CPU and memory resource monitoring. It exposes CPU memory and flash memory used/total byte counts, along with CPU load reported both instantaneously and averaged over multiple windows -- last minute, last 5 minutes, last hour, last day, and last 3 days. This is a direct hardware/software-health MIB for capacity and performance monitoring: sustained high values in ntwsSysCpuLastDayLoad or ntwsSysCpuLast3DaysLoad indicate a controller under chronic CPU pressure, while ntwsSysFlashMemoryUsedBytes approaching ntwsSysFlashMemoryTotalBytes warns of impending storage exhaustion for configuration or firmware images. It is a self-contained Nortel product MIB (copyright Nortel Networks 2007) with no notable external MIB dependency called out in its description. It is deployed on Nortel NTWS wireless switches/controllers managing enterprise Wi-Fi access point fleets. Engineers can download the NTWS-SYSTEM-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in NTWS-SYSTEM-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

Nortel Networks NTWS wireless LAN switches/controllers

Monitoring Examples

A wireless network administrator would poll ntwsSysCpuInstantLoad alongside ntwsSysCpuLastMinuteLoad and ntwsSysCpuLast5MinutesLoad to distinguish a brief CPU spike from a sustained overload on the controller. Checking ntwsSysCpuMemoryUsedBytes against ntwsSysCpuMemoryTotalBytes would reveal memory pressure that might explain slow AP failover or management responsiveness. If ntwsSysFlashMemoryUsedBytes is trending close to ntwsSysFlashMemoryTotalBytes, that flags a need to clean up old firmware images before the next software upgrade.

What Can Be Monitored

CPU load (instant, 1-min, 5-min, hourly, daily, 3-day)
CPU memory used/total bytes
flash memory used/total bytes

Imported Objects

From NTWS-ROOT-MIB

ntwsMibs

OBJECT-IDENTITY

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

DisplayString
TEXTUAL-CONVENTION

OIDs

OID symbolic	OID numeric	Type	Access	Description
ntwsSystemMib	1.3.6.1.4.1.45.6.1.4.8			System objects for Nortel Networks wireless switches. Copyright 2007 Nortel Networks. All rights reserved. This Nortel Networks SNMP Management Information Base Specification (Specification) embodies Nortel Networks' confidential and proprietary intellectual property. This Specification is supplied 'AS IS' and Nortel Networks makes no warranty, either express or implied, as to the use, operation, condition, or performance of the Specification.
ntwsSysObjects	1.3.6.1.4.1.45.6.1.4.8.1
ntwsSysDataObjects	1.3.6.1.4.1.45.6.1.4.8.1.1
U32 ntwsSysCpuMemoryUsedBytes	1.3.6.1.4.1.45.6.1.4.8.1.1.1	Unsigned32	read-only	CPU memory used in bytes. Obsoleted by ntwsSysCpuMemoryInstantUsage.
U32 ntwsSysCpuMemoryTotalBytes	1.3.6.1.4.1.45.6.1.4.8.1.1.2	Unsigned32	read-only	CPU total physical memory in bytes. Obsoleted by ntwsSysCpuMemorySize.
U32 ntwsSysFlashMemoryUsedBytes	1.3.6.1.4.1.45.6.1.4.8.1.1.3	Unsigned32	read-only	Flash memory used in bytes.
U32 ntwsSysFlashMemoryTotalBytes	1.3.6.1.4.1.45.6.1.4.8.1.1.4	Unsigned32	read-only	Flash memory available in bytes.
NTW ntwsSysCpuAverageLoad	1.3.6.1.4.1.45.6.1.4.8.1.1.5	NtwsSysCpuLoad	read-only	CPU load average since system startup.
NTW ntwsSysCpuMemorySize	1.3.6.1.4.1.45.6.1.4.8.1.1.6	NtwsSysMemoryAmount	read-only	Maximum available CPU Memory (RAM) in KBytes. This is the memory available to the Wireless Switch software. May be less than physical RAM size.
ntwsSysCpuLoadDetail	1.3.6.1.4.1.45.6.1.4.8.1.1.11
NTW ntwsSysCpuInstantLoad	1.3.6.1.4.1.45.6.1.4.8.1.1.11.1	NtwsSysCpuLoad	read-only	CPU instant load (for last few seconds).
NTW ntwsSysCpuLastMinuteLoad	1.3.6.1.4.1.45.6.1.4.8.1.1.11.2	NtwsSysCpuLoad	read-only	CPU load for last minute.
NTW ntwsSysCpuLast5MinutesLoad	1.3.6.1.4.1.45.6.1.4.8.1.1.11.3	NtwsSysCpuLoad	read-only	CPU load for last 5 minutes.
NTW ntwsSysCpuLastHourLoad	1.3.6.1.4.1.45.6.1.4.8.1.1.11.4	NtwsSysCpuLoad	read-only	CPU load for last hour.
NTW ntwsSysCpuLastDayLoad	1.3.6.1.4.1.45.6.1.4.8.1.1.11.5	NtwsSysCpuLoad	read-only	CPU load for last day.
NTW ntwsSysCpuLast3DaysLoad	1.3.6.1.4.1.45.6.1.4.8.1.1.11.6	NtwsSysCpuLoad	read-only	CPU load for last 3 days.
ntwsSysCpuMemoryUsageDetail	1.3.6.1.4.1.45.6.1.4.8.1.1.12
NTW ntwsSysCpuMemoryInstantUsage	1.3.6.1.4.1.45.6.1.4.8.1.1.12.1	NtwsSysMemoryAmount	read-only	Instant memory usage (RAM) in KBytes (for last few seconds). Ranges between 0 and ntwsSysCpuMemorySize.
NTW ntwsSysCpuMemoryLastMinuteUsage	1.3.6.1.4.1.45.6.1.4.8.1.1.12.2	NtwsSysMemoryAmount	read-only	Memory usage (RAM) for last minute in KBytes. Ranges between 0 and ntwsSysCpuMemorySize.
NTW ntwsSysCpuMemoryLast5MinutesUsage	1.3.6.1.4.1.45.6.1.4.8.1.1.12.3	NtwsSysMemoryAmount	read-only	Memory usage (RAM) for last 5 minutes in KBytes. Ranges between 0 and ntwsSysCpuMemorySize.
NTW ntwsSysCpuMemoryLastHourUsage	1.3.6.1.4.1.45.6.1.4.8.1.1.12.4	NtwsSysMemoryAmount	read-only	Memory usage (RAM) for last hour in KBytes. Ranges between 0 and ntwsSysCpuMemorySize.
NTW ntwsSysCpuMemoryLastDayUsage	1.3.6.1.4.1.45.6.1.4.8.1.1.12.5	NtwsSysMemoryAmount	read-only	Memory usage (RAM) for last day in KBytes. Ranges between 0 and ntwsSysCpuMemorySize.
NTW ntwsSysCpuMemoryLast3DaysUsage	1.3.6.1.4.1.45.6.1.4.8.1.1.12.6	NtwsSysMemoryAmount	read-only	Memory usage (RAM) for last 3 days in KBytes. Ranges between 0 and ntwsSysCpuMemorySize.
ntwsSysChassisComponents	1.3.6.1.4.1.45.6.1.4.8.1.1.13
ntwsSysChasCompPowerSupplies	1.3.6.1.4.1.45.6.1.4.8.1.1.13.1
U32 ntwsSysNumPowerSuppliesSupported	1.3.6.1.4.1.45.6.1.4.8.1.1.13.1.1	Unsigned32	read-only	The number of power supplies supported by the Wireless Switch. This is the upper limit of the number of entries in the power supply table, ntwsSysPowerSupplyTable.
ntwsSysPowerSupplyTable	1.3.6.1.4.1.45.6.1.4.8.1.1.13.1.2		not-accessible	Table of power supplies actually installed on the Wireless Switch.
ntwsSysPowerSupplyEntry	1.3.6.1.4.1.45.6.1.4.8.1.1.13.1.2.1		not-accessible	An entry in the ntwsSysPowerSupplyTable table.
OID ntwsSysPowerSupplyDeviceOID	1.3.6.1.4.1.45.6.1.4.8.1.1.13.1.2.1.1	OBJECT IDENTIFIER	not-accessible	OID value used to identify this chassis component as indicated in Registration MIB.
NTW ntwsSysPowerSupplyStatus	1.3.6.1.4.1.45.6.1.4.8.1.1.13.1.2.1.2	NtwsSysPowerSupplyStatus	read-only	Status of the power supply.
STR ntwsSysPowerSupplyDescr	1.3.6.1.4.1.45.6.1.4.8.1.1.13.1.2.1.3	DisplayString	read-only	A human interpretable description of this power supply, for example 'Left Power Supply'.

RFC description

Monitors system resources on Nortel wireless switches including CPU load, memory usage, and power supply status across multiple time intervals.

Start monitoring Nortel Networks NTWS wireless LAN switch/controller (CPU/memory resource monitoring) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download NTWS-SYSTEM-MIB

What Is NTWS-SYSTEM-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description