Too warm in the computer room?

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Feb 13th, 2008
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Hello,


I find that our computer room is quite warm but I am not sure the temperature is suitable for our equipement. I ran a "sh env temp" on our catalyst 6500, but I can't quite now how to interpret these values. Documents I found show the operational temp for a cat6500 is between 0 and 40C, but which of the values in the sh env will tell me the if the temperature is OK or not:


sh env temp

VTT 1 outlet temperature: 31C

VTT 2 outlet temperature: 51C

VTT 3 outlet temperature: 33C

module 1 outlet temperature: 37C

module 1 inlet temperature: 28C

module 1 device-1 temperature: 28C

module 1 device-2 temperature: 35C

module 2 outlet temperature: 38C

module 2 inlet temperature: 28C

module 2 device-1 temperature: 28C

module 2 device-2 temperature: 35C

module 3 outlet temperature: 39C

module 3 inlet temperature: 28C

module 3 device-1 temperature: 28C

module 3 device-2 temperature: 34C

module 6 outlet temperature: 37C

module 6 inlet temperature: 31C

module 6 device-1 temperature: 27C

module 6 device-2 temperature: 34C

module 6 aux-1 temperature: 33C

module 6 aux-2 temperature: 33C

module 7 outlet temperature: 27C

module 7 inlet temperature: 22C

module 7 device-1 temperature: 32C

module 7 device-2 temperature: 33C

module 7 asic-1 (SSO-1) temp: 23C

module 7 asic-2 (SSO-2) temp: 23C

module 7 asic-3 (SSO-3) temp: 23C

module 7 asic-4 (SSO-4) temp: 23C

module 7 asic-5 (SSA-1) temp: 23C

module 7 asic-6 (HYPERION-1) temp: 23C

module 7 RP outlet temperature: 27C

module 7 RP inlet temperature: 27C

module 7 EARL outlet temperature: 35C

module 7 EARL inlet temperature: 23C

module 9 outlet temperature: 44C

module 9 inlet temperature: 27C

module 9 EARL outlet temperature: 33C

module 9 EARL inlet temperature: 34C

module 10 outlet temperature: 46C

module 10 inlet temperature: 28C

module 10 EARL outlet temperature: 33C

module 10 EARL inlet temperature: 32C

module 11 outlet temperature: 49C

module 11 inlet temperature: 28C

module 11 EARL outlet temperature: 34C

module 11 EARL inlet temperature: 35


Thanks...

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Hi, you can set the green and yellow thresholds on your switch env, you can check the status with "show env temperature status" command it will tell you if the temp is too high or too low. have a look at the Cisco document below it should be helpful. HTH



Usage Guidelines

On a Cisco ME switch, you can use the show env temperature command to display the switch temperature status. The command output shows the green and yellow states as OK and the red state as FAULTY. If you enter the show env temperature status command on this switch, the temperature information is the same as the show env all command output.


You can use the system env temperature threshold yellow global configuration command to configure the yellow temperature threshold. If not configured, the yellow threshold defaults to 10 degrees Celsius below the red threshold.


Expressions are case sensitive. For example, if you enter | exclude output, the lines that contain output are not displayed, but the lines that contain Output are displayed.


Examples

Displays for the Cisco ME 3400G-12CS switch are different than those for other Cisco ME switches. This is an example of output from the show env all command for the Cisco ME 3400G-12CS switch:


Switch> show env all

FAN 1 is OK

FAN 2 is OK

TEMPERATURE is OK

Temperature Value: 31 Degree Celsius

Temperature State: GREEN

Yellow Threshold : 56 Degree Celsius

Red Threshold : 66 Degree Celsius

POWER SUPPLY 1 is OK

POWER SUPPLY 2 is Alarm disabled

This is an example of output from the show env all command for other Cisco ME switches:


Switch# show env all

FAN is OK

TEMPERATURE is OK

POWER is OK

RPS is NOT PRESENT

This is an example of output from the show env fan command for the Cisco ME 3400G-12CS switch:


Switch> show env fan

FAN 1 is OK

FAN 2 is OK

This is an example of output from the show env fan command for other Cisco ME switches:


Switch> show env fan

FAN is OK

This is an example of output from the show env power command for the Cisco ME 3400G-12CS switch:


Switch> show env power

POWER SUPPLY 1 is OK

POWER SUPPLY 2 is Alarm disabled

These are examples of output from the show env temperature command for the Cisco ME 3400G-12CS switch:


Switch> show env temperature

TEMPERATURE is OK

Switch> show env temperature status

Temperature Value: 31 Degree Celsius

Temperature State: GREEN

Yellow Threshold : 56 Degree Celsius

Red Threshold : 66 Degree Celsius


http://www.cisco.com/en/US/docs/switches/metro/me3400/software/release/12.2_25_seg_seg1/configuration/3400Gconfig_note/OL11141.html

2cellefsen Wed, 02/13/2008 - 13:56
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The inlet temperatures of the modules are an indication of the temp of the air beeing drawn into the Catalyst. Your switch seem to be drawing air that is around 28C, which is above the industry general recommended range for a computer room. In the long run this might affect the lifetime of your equipment.


Check if your room is colder than the inlet temps, and improve airflow into the switch if you can.


Best regards

- Oyvind

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