Cisco Universal Broadband Router Cisco uBR10012 매뉴얼 - 페이지 2

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Cisco Universal Broadband Router Cisco uBR10012에 대해서도 마찬가지입니다: 빠른 참조 매뉴얼 (38 페이지)

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Cisco Universal Broadband Router Cisco uBR10012 매뉴얼

Feature Overview

The Cisco uBR10012 router can optionally ship with two AC power entry modules (PEMs) that provide

a redundant power supply to the system. One AC PEM can provide sufficient power for a fully

configured chassis, so that if one AC PEM fails, the other automatically begins providing power for the

entire router, without impacting system operations.

Note

You should be using Cisco IOS Release 12.2(4)XF1, Cisco IOS Release 12.2(4)BC1a, or a later release

when using the AC PEM. If using an earlier release, the show environment command will not correctly

identify the AC PEM's error messages.

The Cisco uBR10012 router supports using either the AC PEM or the DC PEM, but it does not support

Caution

mixing AC and DC PEMs. Both PEMs must be either AC PEMs or DC PEMs.

The AC PEMs use standard 200–240 VAC (50/60 Hz) input power obtained through power receptacles

on the front panel of each PEM. The two AC PEMs convert the AC power to provide filtered, redundant,

and load shared DC power to the Cisco uBR10012 chassis.

The AC PEMs cannot be used with a 100–120 VAC input power source.

Caution

For fully redundant power protection, use either an uninterruptible power supply (UPS) or a separate

Tips

AC-input power source for each AC PEM.

This document contains the procedures to replace an existing second (redundant) AC PEM and to replace

both AC PEMs.

Note

You do not need to shut down the Cisco uBR10012 router to replace a redundant AC PEM. If you are

replacing both AC PEMs, you can replace one, bring it online, and then replace the other one to avoid

shutting down the system.

Although one AC PEM can provide sufficient power for a fully configured Cisco uBR10012 chassis, the

Caution

system should not be run for an extended period of time with only one AC PEM. If an AC PEM fails,

order and install a replacement AC PEM as soon as possible. The product order number for a

replacement AC PEM is UBR10-PWR-AC=. For proper airflow, cooling, and safety, do not remove the

failed unit until the replacement unit is available for installation.

The output of the show inventory command does not display the serial number for the AC PEM

Note

(UBR10-PWR-AC). Visually inspect the serial number label printed on the AC PEM to locate the serial

number.

AC Power Entry Module for the Cisco uBR10012 Universal Broadband Router

OL-24536-01