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Beginner

Cisco 2901 router Fan issue

Router Fan speed is too high but environment shows normal can any one guide

 

SYSTEM POWER SUPPLY STATUS

==========================

 Internal Power Supply  Type: AC

 Internal Power Supply  12V Output Status: Normal

 

 External Redundant Power Supply is absent or powered off

 

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

 

SYSTEM TEMPERATURE STATUS

=========================

 Intake Left temperature: 23 Celsius, Normal

 Intake Right temperature: 21 Celsius, Normal

 Exhaust Left temperature: 26 Celsius, Normal

 Exhaust Right temperature: 25 Celsius, Normal

 CPU temperature: 50 Celsius, Normal

 Power Supply Unit temperature: 43 Celsius, Normal

 

REAL TIME CLOCK BATTERY STATUS

==============================

 Battery OK (checked at power up)

 

SYSTEM POWER

===============

 Motherboard Components Power consumption = 74.8 WPower consumption =

 ISM 0.0 WPower consumption =

 NM/SM slot 1 3.8 W

 Total System Power consumption is: 78.6 W

 

 Environmental information last updated 00:00:18 ago

 

 

SYSTEM FAN STATUS

=================

 Fan 1 OK, fan level 1, Low speed setting, 11546 RPM, 40% PWM

 Fan 2 OK, fan level 1, Low speed setting, 5175 RPM, 40% PWM

 Fan 3 OK, fan level 1, Low speed setting, 5018 RPM, 40% PWM

 Fan 4 OK, fan level 1, Low speed setting, 5153 RPM, 40% PWM

 

SYSTEM TEMPERATURE STATUS

=========================

 Intake Left temperature: 23 Celsius, Normal

 Intake Right temperature: 21 Celsius, Normal

 Exhaust Left temperature: 26 Celsius, Normal

 Exhaust Right temperature: 25 Celsius, Normal

 CPU temperature: 49 Celsius, Normal

 Power Supply Unit temperature: 43 Celsius, Normal

 

REAL TIME CLOCK BATTERY STATUS

==============================

 Battery OK (checked at power up)

 

SYSTEM ALARMS SETTINGS

======================

 Fan tray removal or multi fan failure results in warning

 CPU Warning Over Temperature Alarm = 90C

 CPU Critical Over Temperature Alarm = 110C

 Intake Left Abnormal Temperature Alarm = 45C

 Intake Left Over Temperature Alarm = 57C

 Intake Right Abnormal Temperature Alarm = 45C

 Intake Right Over Temperature Alarm = 57C

 Exhaust Left Over Temperature Alarm = 75C

 Exhaust Right Over Temperature Alarm = 75C

 Power Supply Unit Over Temperature Alarm = 80C

 Power Supply Unit Over Critical Temperature Alarm = 95C

 

SYSTEM VOLTAGES

===============

 12V voltage = 12.434 V, Normal

 5V voltage = 5.146 V, Normal

 3.3V voltage = 3.322 V, Normal

 2.5V voltage = 2.502 V, Normal

 1.8V voltage = 1.822 V, Normal

 1.2V voltage = 1.199 V, Normal

 ASIC voltage = 1.044 V, Normal

 CPU Core voltage = 1.213 V, Normal

 

SYSTEM POWER

===============

 Motherboard Components Power consumption = 74.8 WPower consumption =

 ISM 0.0 WPower consumption =

 NM/SM slot 1 3.8 W

 Total System Power consumption is: 78.6 W

 

 Environmental information last updated 00:00:27 ago

 

ENVIRONMENTAL STRESS EVENTS

===========================

Critical Temperature: Maxium = 0

                      Total Duration = 0

 Exceed Fan Tray Removal Time: Maximum Time= 0

                               Total Time = 0

Total MCU access error count: 0

1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: Cisco 2901 router Fan issue

The RPM for Fan 1 is high but it does not seem to be an issue from the looks of it -

Fan 1 OK, fan level 1, Low speed setting, 11546 RPM, 40% PWM

Are both the ISR running the same IOS ? Do you see any buffered warning messages if you do "show logg" ?

Nipun Singh Raghav
"We cannot solve our problems with the same thinking we used when we created them"

View solution in original post

4 REPLIES 4
Cisco Employee

Re: Cisco 2901 router Fan issue

How do you know that it is too high ?

Nipun Singh Raghav
"We cannot solve our problems with the same thinking we used when we created them"
Beginner

Re: Cisco 2901 router Fan issue

By comparing noise of 2 2901 router on the same rack..slightly high fan speed

Cisco Employee

Re: Cisco 2901 router Fan issue

The RPM for Fan 1 is high but it does not seem to be an issue from the looks of it -

Fan 1 OK, fan level 1, Low speed setting, 11546 RPM, 40% PWM

Are both the ISR running the same IOS ? Do you see any buffered warning messages if you do "show logg" ?

Nipun Singh Raghav
"We cannot solve our problems with the same thinking we used when we created them"

View solution in original post

Beginner

Re: Cisco 2901 router Fan issue

Hi Nipun,

I doesn't see any buffered msgs in logs, See in attached snap. Also PTCL router are running on 15.2 IOS while cybernet router is on 15.5.

 

 

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