Cisco Broadband Cable Command Reference Guide

cable power
cable power
Syntax Description
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Cisco Broadband Cable Command Reference Guide
Chapter 2 Cisco Cable Modem Termination System Commands
To manually power a cable interface line card on or off on a Cisco uBR10012 router, use the cable power
Privileged EXEC command.
cable power [on | off] slot/card
Defaults Cable interface line cards are powered on by default when the card is inserted into the chassis slot.
Command Modes Privileged EXEC
Command History
on Turns on power to the specified cable interface line card.
off Turns off power to the specified cable interface line card. Power to that
particular card slot remains off until power is turned back on using the
cable power on version of this command.
slot/card Specifies the slot and card number for the desired cable interface card
number. The valid range for slot is 5 to 8 and for card is 0 or 1.
Release Modification
12.2(4)BC1b This command was introduced for the Cisco uBR10012 router.
12.2(8)BC1 This command is disabled if a working TCC+ card is not present in the
Cisco uBR10012 router.
Usage Guidelines This command is typically not used during normal operations, but it can be used for lab, diagnostic, and
troubleshooting purposes. For example, using this command to first power off and then power on a card
is functionally equivalent to performing an online insertion and removal (OIR) of the card.
Be aware of the following points when using this command:
Using the cable power off command is functionally equivalent to disconnect the cables from the
card’s upstream and downstream connectors and then removing the card from the chassis. When you
use this command to turn off power to a card, the output for the show interface cable command for
that card will display the message “Hardware is not present.”
Note You can also use the LC Power off Status Reg and Line Card Presence Status Reg fields in
the show controllers clock-reference command to determine whether a cable interface line
card is actually present in the chassis and whether it has been powered on or off.
Powering off a cable interface line card automatically drops all sessions with the cable modems that
are using that card’s upstreams and downstreams. Do not use this command on a live network unless
this is what you intend.
All cards are powered on when you upgrade to a new software image for the Cisco uBR10012 router,
even if a card had previously been powered off using the cable power off command.
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