Temperature Sensor; Temperature Sensors On The A900 Rsp1 And A900 Rsp2 Modules; Temperature Sensors On The A900 Rsp3 Modules; Serial Number Label Location - Cisco ASR 903 Installation Manual

Example: Configuration with A900-RSP3-200-S with Blank Deflector (A900-IMA-BLNK-DEF)
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Example: Configuration with A900-RSP3-200-S with Blank Deflector (A900-IMA-BLNK-DEF)
In the below configuration, the overall operating temperature of the router is enhanced by using
A900-IMA-BLNK-DEF in the slots above A900-IMA8Z interface module. The maximum operating temperature
of the router is enhanced from 55°C to 65°C by using A900-IMA-BLNK-DEF in slots 1 and 5 (above
A900-IMA8Z).
Note
To support 65°C ambient temperature, EXT optics need to be used for 10G ports.
A900-IMA-BLNK-DEF
A900-IMA8Z
A900-IMA-8T1Z
A900-IMA-8T1Z
A900-IMA-BLNK-DEF
A900-IMA8Z

Temperature Sensor

The Cisco ASR 903 Router has a temperature sensor to detect overtemperature conditions inside the chassis.

Temperature Sensors on the A900 RSP1 and A900 RSP2 modules

The overtemperature detection trips at 75 degrees C +/- 5% with the ambient (inlet) trip point at 67 degrees
C. This condition is reported to the processor as an interrupt, and the software takes action to generate the
appropriate alarms.

Temperature Sensors on the A900 RSP3 modules

The maximum operating temperature of RSP3 module and the interface modules is less than the maximum
operating temperature of the Cisco ASR 903 router. The IOS software decides the appropriate temperature
thresholds to generate warnings, and shuts down the system when abnormally high temperature is detected.
For more information, see

Serial Number Label Location

The figure below shows the serial number label location on the Cisco ASR 903 Router.
Cisco ASR 903 and ASR 903U Aggregation Services Router Hardware Installation Guide
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A900-IMA8Z supports a maximum temperature of 65°C with A903-FAN or A903-FAN-E if
A900-IMA-BLNK-DEF is used in the slot above the interface module.
A900-RSP3C-200
A900-RSP3C-200
PSU
Maximum Operating Ambient Temperature Support for RSP3
A903-FAN-E
PSU
Overview
Modules.