Overview
Monitoring Power-supplies is done using the ENTITY-MIB (RFC-2737) and MIBs which extend/supplement the ENTITY-MIB. The ENTITY-MIB’s entPhysicalTable defines the MIB identifierfor an inventory item, entPhysicalIndex, which is used by the other MIBs extending ENTITY-MIB information.
The relevant Cisco extensions to the ENTITY-MIB supported:
- CISCO-ENTITY-FRU-CONTROL-MIB
- CISCO-ENTITY-SENSOR-MIB
MIB Details
NOTE: In XR Power Supply information is considered “admin” restricted information which is therefore only accessible via community-strings/usernames configured with the “SystemOwner” keyword, ie. “snmp-server community adminLevelCommStr RO SystemOwner” (then poll with “adminLevelCommStr” as community-string).
ENTITY-MIB
Use the entPhysicalTable to determine the physical hierarchy of entities. The entPhysicalTable maps entPhysicalIndex values to the other identifying information for each physical entity modeled in the system. The hierarchy of entities is learned using the following objects:
Object Name | Description |
entPhysicalClass | Indicates the generic type of entity being modeled. |
entPhysicalContainedIn | Indicates the parent entity for the entity being modeled. |
entPhysicalParentRelPos | Indicates the position number of the entity within its parent entity relative to other entities of the same class. |
entPhysicalTable Hierarchy for ASR9K Power-Supply Entities
The entity hierarchy visualization:
Entity Hierarchy Visualization for Power Supplies with Entity Details
Entity Hierarchy Output Format:
|
<<entPhysicalClass>>
|
+-->[entPhysicalParentRelPos] entPhysicalIndex : "entPhysicalName"
| "entPhysicalDescr"
| "entPhysicalVendorType"
|
... hierarchy of children (entPhysicalContainedIn == entPhysicalIndex)
|
<<chassis>>
|
+-->[ -1] 24555730 : "chassis ASR-9010-AC"
| "ASR-9010 AC Chassis"
| "cevChassisASR9010AC"
|
<<container>>
|
|
+-->[ 12] 43665869 : "slot 0/PM0"
| | "Cisco ASR9K AC Power Entry Module Container"
| | "cevContainerASR9KPowerSupplySlotAC"
| |
| <<powerSupply>>
| |
| +-->[ 0] 66531208 : "power-module 0/PM0/SP"
| | "3kW AC Power Module"
| | "cevPowerSupplyASR9KAC3KW"
| |
| <<module>>
| |
| +-->[ 0] 19750579 : "module 0/PM0/SP"
| | "Power-Module host "
| | "cevModuleASR9KHost"
| |
| <<sensor>>
| |
| +-->[ 0] 20133606 : "capacity 0/PM0/SP"
| | "Power Module Capacity Sensor"
| | "cevSensor.71"
| |
| +-->[ 1] 3355929 : "voltage 0/PM0/SP"
| | "Power Module Voltage Sensor"
| | "cevSensor.72"
| |
| +-->[ 2] 53687180 : "current 0/PM0/SP"
| "Power Module Current Sensor"
| "cevSensor.73"
|
+-->[ 13] 60443482 : "slot 0/PM1"
| "Cisco ASR9K AC Power Entry Module Container"
| "cevContainerASR9KPowerSupplySlotAC"
|
+-->[ 14] 10110611 : "slot 0/PM2"
| "Cisco ASR9K AC Power Entry Module Container"
| "cevContainerASR9KPowerSupplySlotAC"
|
+-->[ 15] 26888288 : "slot 0/PM3"
| "Cisco ASR9K AC Power Entry Module Container"
| "cevContainerASR9KPowerSupplySlotAC"
|
+-->[ 16] 43667457 : "slot 0/PM4"
| "Cisco ASR9K AC Power Entry Module Container"
| "cevContainerASR9KPowerSupplySlotAC"
|
+-->[ 17] 60445166 : "slot 0/PM5"
"Cisco ASR9K AC Power Entry Module Container"
"cevContainerASR9KPowerSupplySlotAC"
CISCO-ENTITY-FRU-CONTROL-MIB
Using the info from the entPhysicalTable the information from the CISCO-ENTITY-FRU-CONTROL-MIB can be obtained with the appropriate entPhysicalIndex values for the entities of concern.
Power Supply Power Status Info
Object Name | Description |
cefcFRUPowerAdminStatus | Power Administrative status of the entity |
cefcFRUPowerOperStatus | Power Operational Status of the entity |
cefcFRUCurrent | Current supplied by the entity – positive values indicate power-supplied by the entity; negative values indicate current required to operate the entity. |
Example Output for Power Supply entities:
cefcFRUPowerAdminStatus.66531208 = on(1)
cefcFRUPowerOperStatus.66531208 = on(2)
cefcFRUCurrent.66531208 = 3000
CISCO-ENTITY-SENSOR-MIB
For power supply sensors the entSensorValueTable is supported to indicate the value of the sensors. The entSensorThresholdTable is not supported for ASR9K power-supply sensors.
Example Output for Power Supply Sensors
For 20133606 : "capacity 0/PM0/SP"
entSensorType.20133606 = watts(6)
entSensorScale.20133606 = units(9)
entSensorPrecision.20133606 = 0
entSensorValue.20133606 = 3000
entSensorStatus.20133606 = ok(1)
entSensorValueTimeStamp.20133606 = 00:00:00.00
entSensorValueUpdateRate.20133606 = 0
For 3355929 : "voltage 0/PM0/SP"
entSensorType.3355929 = voltsDC(4)
entSensorScale.3355929 = milli(8)
entSensorPrecision.3355929 = 0
entSensorValue.3355929 = 54350
entSensorStatus.3355929 = ok(1)
entSensorValueTimeStamp.3355929 = 00:00:00.00
entSensorValueUpdateRate.3355929 = 0
For 53687180 : "current 0/PM0/SP"
entSensorType.53687180 = amperes(5)
entSensorScale.53687180 = milli(8)
entSensorPrecision.53687180 = 0
entSensorValue.53687180 = 25600
entSensorStatus.53687180 = ok(1)
entSensorValueTimeStamp.53687180 = 00:00:00.00
entSensorValueUpdateRate.53687180 = 0
