This document explains the process to obtain the temperature values of the Cisco Catalyst 6500/6000. The show environment temperature command-line interface (CLI) command, with use of Simple Network Management Protocol (SNMP), displays these values.
There are no specific requirements for this document.
The information in this document is based on these software and hardware versions:
Catalyst 6500/6000 series switches:
That run Catalyst OS (CatOS)—Support CISCO-ENTITY-SENSOR-MIB as of the initial Supervisor Engine module software version.
Refer to the Catalyst 6000 and 7600 Catalyst OS MIB Support List.
That run Cisco IOS® Software—Support CISCO-ENTITY-SENSOR-MIB as of Cisco IOS Software Release 12.1(8a)EX.
Refer to the Catalyst 6000 and 7600 Cisco IOS MIB Support List for verification.
Note: Device 1 and Device 2 sensors have support as of Cisco IOS Software Release 12.1(14)E. See the Output of the show environment temperature Command Through the CLI section of this document.
CatOS release 5.5.7
SNMPWalk from HP OpenView Network Node Manager, installed on Sun Solaris 2.7
You can also use SNMP Utilities from Net-SNMP for this purpose.
Note: This document uses these MIBs:
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Refer to Cisco Technical Tips Conventions for more information on document conventions.
Complete these steps:
Use the object identifier (OID) entSensorValue (1.3.6.1.4.1.9.9.91.1.1.1.1.4) to obtain the temperature values.
This OID comes from the CISCO-ENTITY-SENSOR-MIB. For all other OIDs that relate to this MIB, see the Overview of the OIDs in CISCO-ENTITY-SENSOR-MIB section of this document. The MIB provides this description:
entSensorValue OBJECT-TYPE SYNTAX SensorValue -- Rsyntax INTEGER(-1000000000..1000000000) ACCESS read-only STATUS mandatory DESCRIPTION "This variable reports the most recent measurement seen by the sensor. To correctly display or interpret this variable's value, you must also know entSensorType, entSensorScale, and entSensorPrecision. However, you can compare entSensorValue with the threshold values given in entSensorThresholdTable without any semantic knowledge." ::= { entSensorValueEntry 4 }
Query the device for the entSensorValue (1.3.6.1.4.1.9.9.91.1.1.1.1.4). In this example, the device host name is zatar:
#snmpwalk -c public zatar 1.3.6.1.4.1.9.9.91.1.1.1.1.4 9.9.91.1.1.1.1.4.15 : INTEGER: 1 9.9.91.1.1.1.1.4.16 : INTEGER: 1 9.9.91.1.1.1.1.4.17 : INTEGER: 2 9.9.91.1.1.1.1.4.18 : INTEGER: 1 9.9.91.1.1.1.1.4.19 : INTEGER: 20 9.9.91.1.1.1.1.4.20 : INTEGER: 1 9.9.91.1.1.1.1.4.21 : INTEGER: 21 9.9.91.1.1.1.1.4.22 : INTEGER: 1 9.9.91.1.1.1.1.4.23 : INTEGER: 20 9.9.91.1.1.1.1.4.1001 : INTEGER: 19 9.9.91.1.1.1.1.4.1002 : INTEGER: 28 9.9.91.1.1.1.1.4.1003 : INTEGER: 22 9.9.91.1.1.1.1.4.1004 : INTEGER: 28 9.9.91.1.1.1.1.4.1007 : INTEGER: 19 9.9.91.1.1.1.1.4.1008 : INTEGER: 23 9.9.91.1.1.1.1.4.1009 : INTEGER: 0 9.9.91.1.1.1.1.4.1010 : INTEGER: 0 9.9.91.1.1.1.1.4.2001 : INTEGER: 16 9.9.91.1.1.1.1.4.2002 : INTEGER: 25 9.9.91.1.1.1.1.4.2003 : INTEGER: 26 9.9.91.1.1.1.1.4.2004 : INTEGER: 0 9.9.91.1.1.1.1.4.3001 : INTEGER: 17 9.9.91.1.1.1.1.4.3002 : INTEGER: 20 9.9.91.1.1.1.1.4.3003 : INTEGER: 19 9.9.91.1.1.1.1.4.3004 : INTEGER: 24 9.9.91.1.1.1.1.4.4001 : INTEGER: 25 9.9.91.1.1.1.1.4.4002 : INTEGER: 29 9.9.91.1.1.1.1.4.4003 : INTEGER: 0 9.9.91.1.1.1.1.4.4004 : INTEGER: 0 9.9.91.1.1.1.1.4.5001 : INTEGER: 20 9.9.91.1.1.1.1.4.5002 : INTEGER: 20 9.9.91.1.1.1.1.4.5003 : INTEGER: 0 9.9.91.1.1.1.1.4.5004 : INTEGER: 0 #
Determine how to link all the temperature values to the correct module in the Catalyst.
For example, what does the index 9.9.91.1.1.1.1.4.1001 : INTEGER: 19 stand for? In order to find out, you must go up one level in the tree. Jump one level from 1.3.6.1.4.1.9.9.91.1.1.1.1.4 back to 1.3.6.1.4.1.9.9.91.1.1.1.1; drop the 4 at the end. This brings you to the entSensorValueEntry (1.3.6.1.4.1.9.9.91.1.1.1.1). The MIB provides this description:
entSensorValueEntry OBJECT-TYPE SYNTAX EntSensorValueEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "An entSensorValueTable entry describes the present reading of a sensor, the measurement units and scale, and sensor operational status." INDEX { entPhysicalIndex } ::= { entSensorValueTable 1 }
The description shows that this OID uses indexes, as you see in the snmpwalk 1001, 1002, and so on. The entSensorValueEntry description shows another OID, entPhysicalIndex, which provides another MIB, the ENTITY-MIB.
IMPORTS Integer32 FROM SNMPv2-SMI-v1 OBJECT-TYPE FROM RFC-1212 TRAP-TYPE FROM RFC-1215 TimeStamp, TruthValue FROM SNMPv2-TC-v1 entPhysicalIndex FROM ENTITY-MIB ciscoMgmt
The entPhysicalIndex comes from the ENTITY-MIB. The ENTITY-MIB provides this description of entPhysicalIndex:
entPhysicalEntry ::= SEQUENCE { entPhysicalIndex PhysicalIndex, entPhysicalDescr SnmpAdminString, entPhysicalVendorType AutonomousType, entPhysicalContainedIn INTEGER, entPhysicalClass PhysicalClass, entPhysicalParentRelPos INTEGER, entPhysicalName SnmpAdminString, entPhysicalHardwareRev SnmpAdminString, entPhysicalFirmwareRev SnmpAdminString, entPhysicalSoftwareRev SnmpAdminString, entPhysicalSerialNum SnmpAdminString, entPhysicalMfgName SnmpAdminString, entPhysicalModelName SnmpAdminString, entPhysicalAlias SnmpAdminString, entPhysicalAssetID SnmpAdminString, entPhysicalIsFRU TruthValue } entPhysicalIndex OBJECT-TYPE SYNTAX PhysicalIndex -- Rsyntax INTEGER(1..2147483647) ACCESS not-accessible STATUS mandatory DESCRIPTION "The index for this entry." ::= { entPhysicalEntry 1 }
From this description, you can again go one step back in the tree and conclude that the entPhysicalIndex comes from the entPhysicalEntry.
Query for the entPhysicalIndex (1.3.6.1.2.1.47.1.1.1.1.1) and then the entPhysicalDescr (1.3.6.1.2.1.47.1.1.1.1.2).
This command gives you the description of 1001, 1002, 1003, 1004, and so on:
#snmpwalk -c public zatar 1.3.6.1.2.1.47.1.1.1.1.2 47.1.1.1.1.2.1 : OCTET STRING- (ascii): Cisco Systems WS-C6506 6 slot switch 47.1.1.1.1.2.2 : OCTET STRING- (ascii): WS-C6506 6 slot switch chassis slot 47.1.1.1.1.2.3 : OCTET STRING- (ascii): WS-C6506 6 slot switch chassis slot 47.1.1.1.1.2.4 : OCTET STRING- (ascii): WS-C6506 6 slot switch chassis slot 47.1.1.1.1.2.5 : OCTET STRING- (ascii): WS-C6506 6 slot switch chassis slot 47.1.1.1.1.2.6 : OCTET STRING- (ascii): WS-C6506 6 slot switch chassis slot 47.1.1.1.1.2.7 : OCTET STRING- (ascii): WS-C6506 6 slot switch chassis slot 47.1.1.1.1.2.8 : OCTET STRING- (ascii): WS-C6506 6 slot switch backplane 47.1.1.1.1.2.9 : OCTET STRING- (ascii): Container of power supply group 47.1.1.1.1.2.10 : OCTET STRING- (ascii): Container of power supply 47.1.1.1.1.2.11 : OCTET STRING- (ascii): power supply 47.1.1.1.1.2.12 : OCTET STRING- (ascii): Container of power supply 47.1.1.1.1.2.14 : OCTET STRING- (ascii): Container of Fan 47.1.1.1.1.2.15 : OCTET STRING- (ascii): Fan 47.1.1.1.1.2.16 : OCTET STRING- (ascii): Clock 47.1.1.1.1.2.17 : OCTET STRING- (ascii): Clock 47.1.1.1.1.2.18 : OCTET STRING- (ascii): VTT 47.1.1.1.1.2.19 : OCTET STRING- (ascii): VTT Temp Sensor 47.1.1.1.1.2.20 : OCTET STRING- (ascii): VTT 47.1.1.1.1.2.21 : OCTET STRING- (ascii): VTT Temp Sensor 47.1.1.1.1.2.22 : OCTET STRING- (ascii): VTT 47.1.1.1.1.2.23 : OCTET STRING- (ascii): VTT Temp Sensor 47.1.1.1.1.2.1000 : OCTET STRING- (ascii): WS-X6K-SUP1A-2GE 1000BaseX Supervisor Rev. 3.1 47.1.1.1.1.2.1001 : OCTET STRING- (ascii): Module Intake Temp Sensor 47.1.1.1.1.2.1002 : OCTET STRING- (ascii): Module Exhaust Temp Sensor 47.1.1.1.1.2.1003 : OCTET STRING- (ascii): Module Device 1 Temp Sensor 47.1.1.1.1.2.1004 : OCTET STRING- (ascii): Module Device 2 Temp Sensor 47.1.1.1.1.2.1005 : OCTET STRING- (ascii): L3 Switching Engine Container 47.1.1.1.1.2.1006 : OCTET STRING- (ascii): L3 Switching Engine 47.1.1.1.1.2.1007 : OCTET STRING- (ascii): L3 SE Intake Temp Sensor 47.1.1.1.1.2.1008 : OCTET STRING- (ascii): L3 SE Exhaust Temp Sensor 47.1.1.1.1.2.1009 : OCTET STRING- (ascii): L3 SE device1 Temp Sensor 47.1.1.1.1.2.1010 : OCTET STRING- (ascii): L3 SE device2 Temp Sensor 47.1.1.1.1.2.1011 : OCTET STRING- (ascii): CPU of supervisor 47.1.1.1.1.2.1012 : OCTET STRING- (ascii): Ethernet Gigabit port interface 47.1.1.1.1.2.1013 : OCTET STRING- (ascii): Ethernet Gigabit port interface 47.1.1.1.1.2.1014 : OCTET STRING- (ascii): Container of Router Switch Feature Card 47.1.1.1.1.2.2000 : OCTET STRING- (ascii): WS-X6182-2PA FlexWAN Module Rev. 1.3 47.1.1.1.1.2.2001 : OCTET STRING- (ascii): Module Intake Temp Sensor 47.1.1.1.1.2.2002 : OCTET STRING- (ascii): Module Exhaust Temp Sensor 47.1.1.1.1.2.2003 : OCTET STRING- (ascii): Module Device 1 Temp Sensor 47.1.1.1.1.2.2004 : OCTET STRING- (ascii): Module Device 2 Temp Sensor 47.1.1.1.1.2.3000 : OCTET STRING- (ascii): WS-X6248-RJ-45 10/100BaseTX Ethernet Rev. 1.1 47.1.1.1.1.2.3001 : OCTET STRING- (ascii): Module Intake Temp Sensor 47.1.1.1.1.2.3002 : OCTET STRING- (ascii): Module Exhaust Temp Sensor 47.1.1.1.1.2.3003 : OCTET STRING- (ascii): Module Device 1 Temp Sensor 47.1.1.1.1.2.3004 : OCTET STRING- (ascii): Module Device 2 Temp Sensor 47.1.1.1.1.2.3005 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3006 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3007 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3008 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3009 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3010 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3011 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3012 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3013 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3014 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3015 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3016 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3017 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3018 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3019 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3020 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3021 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3022 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3023 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3024 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3025 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3026 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3027 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3028 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3029 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3030 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3031 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3032 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3033 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3034 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3035 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3036 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3037 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3038 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3039 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3040 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3041 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3042 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3043 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3044 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3045 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3046 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3047 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3048 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3049 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3050 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3051 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.3052 : OCTET STRING- (ascii): 10/100BaseTX 47.1.1.1.1.2.4000 : OCTET STRING- (ascii): Router Switch feature Card 47.1.1.1.1.2.4001 : OCTET STRING- (ascii): RSFC Intake Temp Sensor 47.1.1.1.1.2.4002 : OCTET STRING- (ascii): RSFC Temp Sensor 47.1.1.1.1.2.4003 : OCTET STRING- (ascii): RSFC device1 Temp Sensor 47.1.1.1.1.2.4004 : OCTET STRING- (ascii): RSFC device2 Temp Sensor 47.1.1.1.1.2.4005 : OCTET STRING- (ascii): Route Switch 47.1.1.1.1.2.5000 : OCTET STRING- (ascii): WS-X6380-NAM Network Analysis Module Rev. 1.1 47.1.1.1.1.2.5001 : OCTET STRING- (ascii): Module Intake Temp Sensor 47.1.1.1.1.2.5002 : OCTET STRING- (ascii): Module Exhaust Temp Sensor 47.1.1.1.1.2.5003 : OCTET STRING- (ascii): Module Device 1 Temp Sensor 47.1.1.1.1.2.5004 : OCTET STRING- (ascii): Module Device 2 Temp Sensor 47.1.1.1.1.2.5005 : OCTET STRING- (ascii): Net Analysis 47.1.1.1.1.2.5006 : OCTET STRING- (ascii): Net Analysis #
Now, you have linked the indexes to the description and linked the indexes to the temperature values.
Make the link between the temperature values and the description.
Extract this information from Step 3:
47.1.1.1.1.2.1001 : OCTET STRING- (ascii): Module Intake Temp Sensor 47.1.1.1.1.2.1002 : OCTET STRING- (ascii): Module Exhaust Temp Sensor 47.1.1.1.1.2.1003 : OCTET STRING- (ascii): Module Device 1 Temp Sensor 47.1.1.1.1.2.1004 : OCTET STRING- (ascii): Module Device 2 Temp Sensor
And extract this information from Step 1:
9.9.91.1.1.1.1.4.1001 : INTEGER: 19 9.9.91.1.1.1.1.4.1002 : INTEGER: 28 9.9.91.1.1.1.1.4.1003 : INTEGER: 22 9.9.91.1.1.1.1.4.1004 : INTEGER: 28
The result gives you:
Module Intake Temp Sensor = 19C
Module Exhaust Temp Sensor = 28C
Module Device 1 Temp Sensor = 22C
Module Device 2 Temp Sensor = 28C
"org" "1.3" "dod" "1.3.6" "internet" "1.3.6.1" "directory" "1.3.6.1.1" "mgmt" "1.3.6.1.2" "experimental" "1.3.6.1.3" "private" "1.3.6.1.4" "enterprises" "1.3.6.1.4.1" "cisco" "1.3.6.1.4.1.9" "ciscoMgmt" "1.3.6.1.4.1.9.9" "entitySensorMIB" "1.3.6.1.4.1.9.9.91" "entitySensorMIBObjects" "1.3.6.1.4.1.9.9.91.1" "entitySensorMIBNotificationPrefix" "1.3.6.1.4.1.9.9.91.2" "entitySensorMIBConformance" "1.3.6.1.4.1.9.9.91.3" "entSensorValues" "1.3.6.1.4.1.9.9.91.1.1" "entSensorThresholds" "1.3.6.1.4.1.9.9.91.1.2" "entSensorValueTable" "1.3.6.1.4.1.9.9.91.1.1.1" "entSensorValueEntry" "1.3.6.1.4.1.9.9.91.1.1.1.1" "entSensorType" "1.3.6.1.4.1.9.9.91.1.1.1.1.1" "entSensorScale" "1.3.6.1.4.1.9.9.91.1.1.1.1.2" "entSensorPrecision" "1.3.6.1.4.1.9.9.91.1.1.1.1.3" "entSensorValue" "1.3.6.1.4.1.9.9.91.1.1.1.1.4" "entSensorStatus" "1.3.6.1.4.1.9.9.91.1.1.1.1.5" "entSensorValueTimeStamp" "1.3.6.1.4.1.9.9.91.1.1.1.1.6" "entSensorValueUpdateRate" "1.3.6.1.4.1.9.9.91.1.1.1.1.7" "entSensorThresholdTable" "1.3.6.1.4.1.9.9.91.1.2.1" "entSensorThresholdEntry" "1.3.6.1.4.1.9.9.91.1.2.1.1" "entSensorThresholdIndex" "1.3.6.1.4.1.9.9.91.1.2.1.1.1" "entSensorThresholdSeverity" "1.3.6.1.4.1.9.9.91.1.2.1.1.2" "entSensorThresholdRelation" "1.3.6.1.4.1.9.9.91.1.2.1.1.3" "entSensorThresholdValue" "1.3.6.1.4.1.9.9.91.1.2.1.1.4" "entSensorThresholdEvaluation" "1.3.6.1.4.1.9.9.91.1.2.1.1.5" "entSensorThresholdNotificationEnable" "1.3.6.1.4.1.9.9.91.1.2.1.1.6" "entitySensorMIBNotifications" "1.3.6.1.4.1.9.9.91.2" "entitySensorMIBCompliances" "1.3.6.1.4.1.9.9.91.3.1" "entitySensorMIBGroups" "1.3.6.1.4.1.9.9.91.3.2" "entitySensorMIBComplianceV01" "1.3.6.1.4.1.9.9.91.3.1.1" "entitySensorValueGroup" "1.3.6.1.4.1.9.9.91.3.2.1" "entitySensorThresholdGroup" "1.3.6.1.4.1.9.9.91.3.2.2"
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Note: You must be in enable mode in order to issue the show environment temperature command.
zatar> (enable)#show environment temperature Intake Exhaust Device 1 Device 2 Slot Temperature Temperature Temperature Temperature --------------- ------------ ------------ ------------ ------------ 1 19C(50C,65C) 28C(60C,75C) 21C 27C 2 20C(50C,65C) 20C(60C,75C) N/A N/A 3 16C(50C,65C) 25C(60C,75C) 26C(70C,85C) N/A 4 17C(50C,65C) 20C(60C,75C) 19C 24C 1 (Switch-Eng) 19C(50C,65C) 23C(60C,75C) N/A N/A 1 (MSFC) 24C(50C,65C) 29C(60C,75C) N/A N/A Chassis Modules ------------------ VTT1: 20C(85C,100C) VTT2: 21C(85C,100C) VTT3: 19C(85C,100C) zatar> (enable)
The switch sends the SNMP ciscoEnvMonTemperatureStatusDescr=Module [no] message as a notification that the temperature that is measured at a given test point is outside the normal range for the test point. The range can be in one of these stages:
Warning
Critical
Shutdown
The current status range option in the SNMP notification trap specifies in which of these three ranges of temperature the module lies. The check duration option in the SNMP notification trap specifies the time duration for which the temperature of the switch is above the normal range.
If the current status of the temperature at the test point of the module is at the shutdown stage, the switch automatically shuts down the module. The ciscoEnvMonTemperatureStatusDescr = module[no] messages are informational messages.
The suggested workaround to avoid unexpected issues is to ensure that the temperature around the switch is kept within the operational standards that the Module Specifications specify. See the Output of the show environment temperature Command Through the CLI section of this document in order to make this temperature determination. Also, be sure that the internal fans in the switch work normally.