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Troubleshooting
Fiber-Optic 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.
LED Summary
The following sections describe the meanings of the LEDs on the Cisco ASR 907 Router.
RSP LEDs
The table below summarizes the RSP LEDs.
Note
A major alarm condition indicates the failure of a single fan in the fan tray; a critical alarm indicates the
failure of multiple fans. In the event that a single fan fails, the Cisco ASR 907 Router software adjusts
the fan speed to prevent excessive heat within the chassis.
ASR900-RSP LED
Table 23: RSP LEDs
LED
Power (PWR)
Status (STAT)
Active (ACT)
Color/State
Off
Green
Off
Red
Yellow
Green
Off
Yellow
Green
Cisco ASR 907 Router Hardware Installation Guide
Fiber-Optic Specifications
Description (two LEDs for each
port)
Disabled/no power to RSP
Power rails on RSP in range
Disabled/power down
Failure to boot (lit at reset)
Rommon booted
IOS booted and running
Not available
Standby (indicates standby RSP)
Active (indicates active RSP)
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