I am trying to find out what the 'normal' operating temperature of the CPU in a 3945 router is?
We have just replaced some 2800 routers for 3945's and the NMS server initially complained about the new router CPU temperature being too high. Compared to the 2800 the CPU temperature is much hotter - 50 degrees celcius as opposed to 20-smothing degrees. I have searched but can't find what are considered 'normal'?
This is the output:
router#sho environment all
SYSTEM POWER SUPPLY STATUS
Internal Power Supply 1 Type: DC
Internal Power Supply 1 12V Output Status: Normal
Internal Power Supply 2 Type: DC
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: 19 Celsius, Normal
Intake Right temperature: 20 Celsius, Normal
Exhaust Right temperature: 20 Celsius, Normal
Exhaust Left temperature: 24 Celsius, Normal
CPU temperature: 51 Celsius, Normal
Power Supply Unit 1 temperature: 26 Celsius, Normal
Power Supply Unit 2 temperature: 25 Celsius, Normal
REAL TIME CLOCK BATTERY STATUS
Battery OK (checked at power up)
Motherboard Components Power consumption = 134.5 WPower consumption =
NM/SM slot 4 57.3 W
Total System Power consumption is: 191.8 W
Environmental information last updated 00:00:18 ago
Hi Paolo, I appreciate I can't compare the different platforms, however the customer asked the question about what was 'normal' and I searched and can't find anything. The NMS platform needs tweaking to tell it what is 'not normal'. I should have checked with the command 'show environment table' - this tells me up to 95 degrees celcuis is normal...
I checked 5 different 3845, I had one at 42c and three were 50-51c, one was 52c.
Cisco 3800 series routers operate at a temperature of 32 to 104 degrees F (0 to 40 degrees C) and a humidity of 5 to 95 percent (noncondensing).
Though that cannot be completely accurate or I am misreading the meaning.
One of my 3845 with a new version of code shows a alert setting:
Intake temp warning: threshold 55
Core temperature warning: enabled, threshold: 70 (CPU: 90).
I would say 50c is a safe temperature.