Cisco ubr924 Installation And Startup page 11

Cable access router

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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.

ACT

CATV

LINK

V OK

MSG

DSNR

Cisco uBR900

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