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Troubleshooting Aids
Pi n
A 3
A 4
Note
USB TYPE-A receptacle is used.
Note
The USB MEM port +5VDC is output. Cisco ASR 920 Router provides power for USB MEM port. This port
operates as a USB host device.
Check Optical Fiber Specifications
The specification for optical fiber transmission defines two types of fiber: single mode and multimode. Within
the single-mode category, three transmission types are defined: short reach, intermediate reach, and long
reach. Within the multimode category, only short reach is available. For information about optical SFP modules,
see the documentation for the SFP module at:
http://www.cisco.com/en/US/partner/products/hw/modules/ps5455/prod_installation_guides_list.html
Check Alarm Conditions
The following table summarizes the meaning of the alarm conditions on the Cisco ASR 920 Router.
Table 18: Alarm Condition Summary
Alarm
Type
Critical
Major
Info
Check LED Indicators
For more information about the LEDs and their description, see the LED Indicators section in the Overview
chapter.
Cisco ASR-920-12SZ-A and Cisco ASR-920-12SZ-D Aggregation Services Router Hardware Installation Guide
Signal
Description
Name
D+
Data +
Gnd
Ground
Alarm Meaning
Port in down state.
Environmental sensor threshold exceeded critical level (voltage, temperature)
Environmental sensor threshold exceeded major level (voltage, temperature)
Port administratively shut down.
Check Optical Fiber Specifications
.
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