Cisco 3850 – Power Diagnostics

Some handy commands for testing the interfaces power

3850Switch# test cable-diagnostics tdr interface gigabitEthernet 1/0/1

……wait a few seconds……..

3850Sswitch# sh cable-diagnostics tdr interface gigabitEthernet 1/0/1

Results should not read Normal not Open.

Show Power Supply Status

Every now and then you’ll have to use this command to verify Power Supply and other system environmental status.

ROUTER#sh environment all
SYSTEM POWER SUPPLY STATUS
==========================
Internal Power Supply 1 Type: AC
Internal Power Supply 1 Input Status and 12V Output Status: Fail

Internal Power Supply 2 Type: AC
Internal Power Supply 2 12V Output Status: Normal

SYSTEM FAN STATUS
=================
Fan 1 OK, Low speed setting
Fan 2 OK, Low speed setting
Fan 3 OK, Low speed setting
Fan 4 OK, Low speed setting
Fan 5 OK, Low speed setting

SYSTEM TEMPERATURE STATUS
=========================
Intake Left temperature: 25 Celsius, Normal
Intake Right temperature: 24 Celsius, Normal
Exhaust Right temperature: 24 Celsius, Normal
Exhaust Left temperature: 26 Celsius, Normal
CPU temperature: 55 Celsius, Normal
Power Supply Unit 2 temperature: 27 Celsius, Normal

REAL TIME CLOCK BATTERY STATUS
==============================
Battery OK (checked at power up)

SYSTEM POWER
===============
Motherboard Components Power consumption = 100.8 WPower consumption =
NM/SM slot 4 43.1 W
Total System Power consumption is: 143.9 W

Environmental information last updated 00:00:20 ago