Contents

Introduction

Prerequisites

Requirements

Components Used

Procedure

Step 1. Check the Status of the PS

Step 2. Identify False Positive Alerts

Step 3. Identify Hardware Failures

Not Enough Power at the Input of the PS

Not Enough Power Provided by the PS

Additional Information

Related Information

Introduction

This document describes how to troubleshoot an ASR1k Power Supply (PS) and to avoid an unnecessary Return Material Authorization (RMA).

Prerequisites

Requirements

Cisco recommends that you have knowledge of these topics:

- Cisco IOS® XE

- ASR1k

Components Used

The information in this document is based on the hardware and software version:

- ASR1002-X

- 03.10.04.S // 15.3(3)S4

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any command.

Procedure

In order to troubleshoot PS on ASR1k, there are several steps that need to be taken.

Step 1. Check the Status of the PS

In order to check the status, run the  show platformcommand:

Router#show platform

Chassis type: ASR1002-X

Slot      Type                State                 Insert time (ago)

--------- ------------------- --------------------- -----------------

P0        ASR1002-X-PWR-AC    ok                    5d12h

P1        ASR1002-X-PWR-AC    ps, fail              5d12h

The slot field indicates if the PS is mounted on slot0 (P0) or slot1 (P1).

Note: P1 is displayed when the platform supports a secondary slot to install a redundant PS.

The state field indicates two possible values:

- ok = The PS works correctly

- ps, fail = The PS has triggered the failure alarm

The type field indicates the PS part identifier (PID) and the insert time field indicates the amount of time passed since the PS was inserted into the chassis.

If the failure alarm triggers, run the show environmentcommand:

Router#show environment

Sensor List:  Environmental Monitoring

Sensor           Location          State             Reading

PEM Iout         P0                Normal            16 A

PEM Vout         P0                Normal            12 V DC

PEM Vin          P0                Normal            230 V AC

PEM Iout         P1                Normal            16 A

PEM Vout         P1                Normal            12 V DC

PEM Vin          P1                Normal            231 V AC

These fields are the most relevant:

- Sensor = Displays the power entry module (PEM)  values

- Iout = Electrical current output, measured on amperes (A)

- Vout = Electrical voltage output, measured on direct current voltage (V DC)

- Vin = Electrical voltage input, measure in either alternate or direct voltage (V AC | V DV)

Tip: The Vin value changes from one PS model to other, you need to check the datasheet to confirm the correct value. The type identifies the last two characters of the PID, AC stands for alternate current and DC for direct current.

- Location = Indicates the slot in which the PS is installed

- Reading = Displays the numerical values

The ASR1k PS delivers 12 or 5 V DC as the PEM Vout, it depends on the PS model. Any other value indicates a faulty PEM Vout.

Note: Check the status of the fan and temperature sensor in the PS, these values are displayed as TEMP when you run show environment, an alarm indicates a hardware error with the fan.

Step 2. Identify False Positive Alerts

A false positive alert is triggered when the ps, fail state is found in the  show platformcommand, and the show environment  command displays correct PEM values, for example:

Router#show platform

Chassis type: ASR1002-X

Slot      Type                State                 Insert time (ago)

--------- ------------------- --------------------- -----------------

P0        ASR1002-X-PWR-AC    ok                    5d12h

P1        ASR1002-X-PWR-AC    ps, fail              5d12h

Router#show environment

Sensor List:  Environmental Monitoring

Sensor           Location          State             Reading

PEM Iout         P1                Normal            16 A

PEM Vout         P1                Normal            12 V DC

PEM Vin          P1                Normal            230 V AC

Caution: If theshow platform  command displays an alarm and the show environment  command displays a correct status then a cosmetic bug affects the device. Cisco bug ID CSCvc16495 documents this behavior for the ASR1K.

Step 3. Identify Hardware Failures

Not Enough Power at the Input of the PS

In order to identify if the PS receives enough energy, run the show environmentcommand:

Router#show environment

Sensor List:  Environmental Monitoring

Sensor           Location          State             Reading

PEM Iout         P0                Normal            16 A

PEM Vout         P0                Normal            12 V DC

PEM Vin          P0                Normal            209 V AC

PEM Iout         P1                Normal            1 A

PEM Vout         P1                Normal            1 V DC

PEM Vin          P1                Normal            5 V AC

Check the source of power provided to the PS and discard an environmental problem or a problem at the site.

If the power source is ok and works correctly with a different PS, replace the offended PS.

Not Enough Power Provided by the PS

In order to identify if the PS provides enough energy, run the show environment command:

Router#show environment

Sensor List:  Environmental Monitoring

Sensor           Location          State             Reading

PEM Iout         P0                Normal            16 A

PEM Vout         P0                Normal            12 V DC

PEM Vin          P0                Normal            221 V AC

PEM Iout         P1                Normal            0 A

PEM Vout         P1                Normal            0 V DC

PEM Vin          P1                Normal            221 V AC

If the PS does not supply enough energy, replace the offended PS.

Additional Information

In order to obtain additional information of the PS run the show platform hardware slot <slot id> mcu status  command or the show platform hardware slot <slot id> fan statuscommand.

Router#show platform hardware slot P1 mcu status

Model ID: 2

12V I: 12

12V V: 12

Temp: 35

Input V: 214

Fan speed: 65%

Router#show platform hardware slot P1 fan status

Fan 0: Normal

Fan 1: Normal

Fan 2: Normal

Related Information

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