All MIBs › CENTILLION-ROOT-MIB
Category: ATM, Vendor: Nortel
Description:
Defines the root OID hierarchy and product registrations for Nortel Centillion ATM switch MIB modules.
Imported Objects
From RFC-1212
| OBJECT-TYPE |
From RFC1155-SMI
| enterprises |
From RFC1213-MIB
| DisplayString |
From SNMPv2-SMI-v1
| Counter32 |
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.
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
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.
OIDs
| OID symbolic | OID numeric | Type | Access | Description |
|---|---|---|---|---|
| centillion | 1.3.6.1.4.1.930 | |||
| cnProducts | 1.3.6.1.4.1.930.1 | |||
| cnCentillion100 | 1.3.6.1.4.1.930.1.1 | |||
| cnIBM8251 | 1.3.6.1.4.1.930.1.2 | |||
| cnBayStack301 | 1.3.6.1.4.1.930.1.3 | |||
| cn5000BH_MCP | 1.3.6.1.4.1.930.1.4 | |||
| cnCentillion50N | 1.3.6.1.4.1.930.1.5 | |||
| cnCentillion50T | 1.3.6.1.4.1.930.1.6 | |||
| cn5005BH_MCP | 1.3.6.1.4.1.930.1.7 | |||
| proprietary | 1.3.6.1.4.1.930.2 | |||
| cnSystem | 1.3.6.1.4.1.930.2.1 | |||
| sysChassis | 1.3.6.1.4.1.930.2.1.1 | |||
| SSC chassisType | 1.3.6.1.4.1.930.2.1.1.1 | SsChassisType | read-only | The chassis type. |
| SSB chassisBkplType | 1.3.6.1.4.1.930.2.1.1.2 | SsBackplaneType | read-only | The chassis backplane type. |
| 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. |
| 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 chassisSerialNumber | 1.3.6.1.4.1.930.2.1.1.6 | OCTET STRING | read-only | Chassis serial number. |
| OCT chassisPartNumber | 1.3.6.1.4.1.930.2.1.1.7 | OCTET STRING | read-only | Chassis part number. |
| slotConfigTable | 1.3.6.1.4.1.930.2.1.1.9 | not-accessible | The chassis slot configuration table. | |
| 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 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. |
| SSM slotModuleType | 1.3.6.1.4.1.930.2.1.1.9.1.2 | SsModuleType | read-only | Module type. |
| 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. |
| 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. |
| STR slotModuleSwVer | 1.3.6.1.4.1.930.2.1.1.9.1.5 | DisplayString | read-only | The software revision of the module. |
| 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. |
| 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 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. |
| 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). |
| 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. |
| 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 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. |
| 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. |
| 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. |
| 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. |
| 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 slotLastResetVirtualAddress | 1.3.6.1.4.1.930.2.1.1.9.1.17 | Counter32 | read-only | The bus address. |
| 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 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. |
| 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). |
| 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. |
| 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. |
| sysConfig | 1.3.6.1.4.1.930.2.1.2 | |||
| sysMonitor | 1.3.6.1.4.1.930.2.1.3 | |||
| sysTrap | 1.3.6.1.4.1.930.2.1.4 | |||
| sysMcpRedundTrap | 1.3.6.1.4.1.930.2.1.4.1 | |||
| cnPvcTraps | 1.3.6.1.4.1.930.2.1.4.2 | |||
| sysEvtLogMgmt | 1.3.6.1.4.1.930.2.1.5 | |||
| cnATM | 1.3.6.1.4.1.930.2.2 | |||
| atmConfig | 1.3.6.1.4.1.930.2.2.1 | |||
| atmMonitor | 1.3.6.1.4.1.930.2.2.2 | |||
| atmLane | 1.3.6.1.4.1.930.2.2.3 | |||
| atmSonet | 1.3.6.1.4.1.930.2.2.4 | |||
| extensions | 1.3.6.1.4.1.930.3 | |||
| cnTemporary | 1.3.6.1.4.1.930.4 |
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.
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