Cisco ubr924 Installation And Startup page 11

Initialize the Router
View Initialization
When the router is connected and powered on, it executes automatic self-diagnostic and installation procedures.
For this to occur, a number of actions must be performed at the headend. Refer to the "Prepare for Installation"
section of this guide. The initialization process follows:
• All LEDs on the front of the router light (except for the ACT LED and LEDs 1 through 4) when the router
first powers on.
• Different LEDs light to indicate diagnostic progress and turn off after all checks are successful.
• The OK LED then blinks as the router completes self-test and boots a Cisco IOS image.
• The router, in accordance with DOCSIS, acquires a downstream channel, establishes communications with
the headend, and downloads a configuration file (and an optional updated image if set).
• When the download is complete, the following LEDs light and remain solid to indicate the router is
operational:
— DS LED reveals the router is locked to a downstream channel.
— US LED reveals the upstream channel is operational.
— LINK LED reveals the cable interface is operational.
— DSNR LED reveals the router is receiving a good downstream signal-to-noise ratio.
OK ACT 1 2 3 4
CATV LINK V OK V1 V2 DS
MSG
US DSNR
Cisco uBR900
SERIES
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