CENTILLION-ROOT-MIB

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Category: ATM, Vendor: Nortel

Description: Defines the root OID hierarchy and product registrations for Nortel Centillion ATM switch MIB modules.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock status) 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.

What Is CENTILLION-ROOT-MIB?

CENTILLION-ROOT-MIB manages Nortel/Bay Networks Centillion ATM switches, chassis-based ATM LAN switching platforms, and despite its "root" naming it does include real chassis hardware-monitoring objects alongside the enterprise OID registration structure. It exposes chassis-level identity and inventory data (chassis type, backplane type, serial number, part number) as well as slot/module configuration (module type, hardware version) for each slot in the chassis. Critically for hardware health monitoring, it includes explicit fault-status objects for redundant power supplies (chassisPs1FailStatus, chassisPs2FailStatus) and cooling (chassisFanFailStatus), letting an operator detect a failed power supply or fan before it causes an outage. Its dependency is on the standard SNMPv2-SMI enterprise framework, with the "proprietary" and "cnProducts" branches organizing Nortel's broader Centillion product registrations. It is deployed on Nortel Centillion ATM switch chassis in legacy ATM campus/backbone network deployments. The CENTILLION-ROOT-MIB MIB is therefore unusual among vendor "root" modules in that it combines enterprise OID registration with genuine, pollable chassis hardware-monitoring objects rather than acting as pure structural namespace.

IPNetwork Monitor allows you to monitor SNMP objects defined in CENTILLION-ROOT-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/Bay Networks Centillion ATM switch chassis

Monitoring Examples

An admin can poll chassisPs1FailStatus and chassisPs2FailStatus to detect a failed redundant power supply, and chassisFanFailStatus to catch a cooling failure, both of which are early warning signs of chassis-level hardware trouble. The slotConfigTable/slotConfigEntry lets an operator enumerate each slotNumber's slotModuleType and slotModuleHwVer, useful for auditing installed line cards and hardware revisions after a maintenance window. chassisSerialNumber and chassisPartNumber support asset inventory and warranty/support tracking for the chassis itself.

What Can Be Monitored

power supply failure status (dual PSU)
cooling fan failure status
chassis/backplane type and serial number
per-slot module type and hardware version

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

enterprises

From RFC1213-MIB

DisplayString

From SNMPv2-SMI-v1

Counter32

OIDs

OID symbolic	OID numeric	Type	Access	Description
atmConfig	1.3.6.1.4.1.930.2.2.1
atmLane	1.3.6.1.4.1.930.2.2.3
atmMonitor	1.3.6.1.4.1.930.2.2.2
atmSonet	1.3.6.1.4.1.930.2.2.4
centillion	1.3.6.1.4.1.930
SSB chassisBkplType	1.3.6.1.4.1.930.2.1.1.2	SsBackplaneType	read-only	The chassis backplane type.
FAI chassisFanFailStatus	1.3.6.1.4.1.930.2.1.1.5	FailIndicator	read-only	System chassis fan failure indicator. A value of on (1) indicates a failure on one or both of the system fans.
OCT chassisPartNumber	1.3.6.1.4.1.930.2.1.1.7	OCTET STRING	read-only	Chassis part number.
FAI chassisPs1FailStatus	1.3.6.1.4.1.930.2.1.1.3	FailIndicator	read-only	Power supply 1 failure indicator. A value of on (1) indicates a failure on power supply 1.
FAI chassisPs2FailStatus	1.3.6.1.4.1.930.2.1.1.4	FailIndicator	read-only	Power supply 2 failure indicator. A value of on (1) indicates a failure on power supply 2.
OCT chassisSerialNumber	1.3.6.1.4.1.930.2.1.1.6	OCTET STRING	read-only	Chassis serial number.
SSC chassisType	1.3.6.1.4.1.930.2.1.1.1	SsChassisType	read-only	The chassis type.
cn5000BH_MCP	1.3.6.1.4.1.930.1.4
cn5005BH_MCP	1.3.6.1.4.1.930.1.7
cnATM	1.3.6.1.4.1.930.2.2
cnBayStack301	1.3.6.1.4.1.930.1.3
cnCentillion100	1.3.6.1.4.1.930.1.1
cnCentillion50N	1.3.6.1.4.1.930.1.5
cnCentillion50T	1.3.6.1.4.1.930.1.6
cnIBM8251	1.3.6.1.4.1.930.1.2
cnProducts	1.3.6.1.4.1.930.1
cnPvcTraps	1.3.6.1.4.1.930.2.1.4.2
cnSystem	1.3.6.1.4.1.930.2.1
cnTemporary	1.3.6.1.4.1.930.4
extensions	1.3.6.1.4.1.930.3
proprietary	1.3.6.1.4.1.930.2
BOO slotConfigAdd	1.3.6.1.4.1.930.2.1.1.9.1.20	Boolean	read-write	Setting this object causes the configuration of the slot to be updated to match the module currently in the slot. When read, this object always returns false(2).
BOO slotConfigDelete	1.3.6.1.4.1.930.2.1.1.9.1.9	Boolean	read-write	Setting this object causes the configuration of the slot to be deleted. When read, this object has a value of false(2).
slotConfigEntry	1.3.6.1.4.1.930.2.1.1.9.1		not-accessible	What type of module is in each slot of the chassis.
INT slotConfigExtClockSource	1.3.6.1.4.1.930.2.1.1.9.1.21	INTEGER	read-write	This field indicates the external clock source. 0 = Local Oscillator, 1..N = ATM port id for external clock source. This object only applies to ATM MDA modules with SM, MM, or UTP media types.
SSM slotConfigMediaType	1.3.6.1.4.1.930.2.1.1.9.1.10	SsMediaType	read-only	The configured card media type. In the case of a card mismatch, the configured media type and the module type will not match.
slotConfigTable	1.3.6.1.4.1.930.2.1.1.9		not-accessible	The chassis slot configuration table.
INT slotConfigTrafficShapingRate	1.3.6.1.4.1.930.2.1.1.9.1.22	INTEGER	read-write	Configured traffic shaping rate in kilo bits per second on an ATM module. The actual rate may be different from the configured rate depending upon the physical interface of ports in the module.
C32 slotLastResetCause	1.3.6.1.4.1.930.2.1.1.9.1.18	Counter32	read-only	Register value related to the last reset
C32 slotLastResetEPC	1.3.6.1.4.1.930.2.1.1.9.1.16	Counter32	read-only	The programe counter realated to the last reset.
C32 slotLastResetTimeStamp	1.3.6.1.4.1.930.2.1.1.9.1.19	Counter32	read-only	A integer value of the system clock since last reset.
C32 slotLastResetVirtualAddress	1.3.6.1.4.1.930.2.1.1.9.1.17	Counter32	read-only	The bus address.
MAC slotModuleBaseMacAddress	1.3.6.1.4.1.930.2.1.1.9.1.15	MacAddress	read-only	This object returns the module base Mac address. A physical port's default Mac address can be computed based on this address by using following computation: Port(n)MacAddress = Moudle base Mac address + Port(n); where (n) is the 0-based port number.
INT slotModuleFlashSize	1.3.6.1.4.1.930.2.1.1.9.1.13	INTEGER	read-only	This indicates installed flash size in KB of this module.
OCT slotModuleHwVer	1.3.6.1.4.1.930.2.1.1.9.1.3	OCTET STRING	read-only	The hardware revision of the module.
INT slotModuleInstalledRAM	1.3.6.1.4.1.930.2.1.1.9.1.12	INTEGER	read-only	This indicates installed RAM in KB of this module.
OCT slotModuleLeds	1.3.6.1.4.1.930.2.1.1.9.1.7	OCTET STRING	read-only	Status of the module LEDs. Each LED bank is encoded in four bits (nibble), one bit for each LED. The least significant bit of each nibble represents the bottom LED of each bank. The first octet in the string, as read from left to right represents the first LED banks.
INT slotModuleMaxRAM	1.3.6.1.4.1.930.2.1.1.9.1.11	INTEGER	read-only	This indicates maximum RAM size in KB can be installed in this module.
INT slotModuleProductImageId	1.3.6.1.4.1.930.2.1.1.9.1.14	INTEGER	read-only	This indicates the product target image id of this module.
INT slotModuleReset	1.3.6.1.4.1.930.2.1.1.9.1.8	INTEGER	read-write	This indicates the reset state of the module. Writing with the value reset (2) will reset the module.
OCT slotModuleSerialNumber	1.3.6.1.4.1.930.2.1.1.9.1.4	OCTET STRING	read-only	Module serial number. Format is 3 BCD digits.
INT slotModuleStatus	1.3.6.1.4.1.930.2.1.1.9.1.6	INTEGER	read-only	This indicates the operational status of the module.
STR slotModuleSwVer	1.3.6.1.4.1.930.2.1.1.9.1.5	DisplayString	read-only	The software revision of the module.
SSM slotModuleType	1.3.6.1.4.1.930.2.1.1.9.1.2	SsModuleType	read-only	Module type.
INT slotNumber	1.3.6.1.4.1.930.2.1.1.9.1.1	INTEGER	read-only	The chassis slot number. Valid entries are system dependent based on the chassis type.
sysChassis	1.3.6.1.4.1.930.2.1.1
sysConfig	1.3.6.1.4.1.930.2.1.2
sysEvtLogMgmt	1.3.6.1.4.1.930.2.1.5
sysMcpRedundTrap	1.3.6.1.4.1.930.2.1.4.1
sysMonitor	1.3.6.1.4.1.930.2.1.3
sysTrap	1.3.6.1.4.1.930.2.1.4

FAQ

How can I detect a failing power supply or cooling fan in a Nortel Centillion ATM switch chassis before it causes an outage?
CENTILLION-ROOT-MIB includes explicit fault-status objects for redundant power supplies (chassisPs1FailStatus, chassisPs2FailStatus) and for the chassis cooling fan (chassisFanFailStatus). Polling these lets an operator raise an alert the moment one PSU or the fan fails, giving time to schedule a repair on the still-functioning redundant hardware before the whole chassis goes down.

What hardware inventory information does CENTILLION-ROOT-MIB expose for a Centillion ATM switch?
It reports chassis-level identity data such as chassis type, backplane type, serial number, and part number, plus per-slot module type and hardware version. This is useful for asset tracking and for confirming exactly which module is installed in each slot of a Centillion chassis during a maintenance or audit visit.

RFC description

Cabletron Centillion switch product line enterprise root OID definition MIB.

Start monitoring Nortel/Bay Networks Centillion ATM switch chassis (legacy) 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 CENTILLION-ROOT-MIB

What Is CENTILLION-ROOT-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

FAQ

RFC description