Temperature Sensor; Serial Number Label Location; Interface Numbering - Cisco ASR 903 Hardware Installation Manual

Chapter 1 Cisco ASR 903 Router Overview

Temperature Sensor

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

Serial Number Label Location

Figure 1-9
Figure 1-9

Interface Numbering

The Cisco ASR 903 Router chassis includes:
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Each network interface on a Cisco ASR 903 Router is identified by a slot number and a port number.
OL-25178-04
shows the serial number label location on the Cisco ASR 903 Router.
Cisco ASR 903 Router Serial Number Location
Serial Number
Six interface module slots
Two RSP module slots
Two power supply slots
One fan tray slot
11 letters and numbers
Cisco ASR 903 Router Hardware Installation Guide
Interface Numbering
1-15