C6840-X-LE-40G - Max Temperature for EARL

alexserrano · ‎05-23-2022

Hello all,

Context/Description:

I have an C6840-X-LE-40G with "high temperature" for the EARL. On Zabbix, I have recieve an alarm because the temperature was higher than 70°C.

#sh environment temperature
...
  switch 1 module 1 EARL 1 device-1 temperature: 72C
  switch 1 module 1 EARL 1 device-2 temperature: 72C
  switch 1 module 1 EARL 2 device-1 temperature: 75C
  switch 1 module 1 EARL 2 device-2 temperature: 73C
  switch 1 module 1 EARL 3 device-1 temperature: 71C
  switch 1 module 1 EARL 3 device-2 temperature: 69C

However, from the alarm threshold we have the following value for minor and major alarm:

#sh environment alarm thresholds | sec EARL
switch 1 module 1 EARL 1 device-1 temperature: 71C
  threshold #1 for switch 1 module 1 EARL 1 device-1 temperature:
    (sensor value >= 110C) is system minor alarm
  threshold #2 for switch 1 module 1 EARL 1 device-1 temperature:
    (sensor value >= 125C) is system major alarm
switch 1 module 1 EARL 1 device-2 temperature: 71C
  threshold #1 for switch 1 module 1 EARL 1 device-2 temperature:
    (sensor value >= 110C) is system minor alarm
  threshold #2 for switch 1 module 1 EARL 1 device-2 temperature:
    (sensor value >= 125C) is system major alarm
switch 1 module 1 EARL 2 device-1 temperature: 75C
  threshold #1 for switch 1 module 1 EARL 2 device-1 temperature:
    (sensor value >= 110C) is system minor alarm
  threshold #2 for switch 1 module 1 EARL 2 device-1 temperature:
    (sensor value >= 125C) is system major alarm
switch 1 module 1 EARL 2 device-2 temperature: 73C
  threshold #1 for switch 1 module 1 EARL 2 device-2 temperature:
    (sensor value >= 110C) is system minor alarm
  threshold #2 for switch 1 module 1 EARL 2 device-2 temperature:
    (sensor value >= 125C) is system major alarm
switch 1 module 1 EARL 3 device-1 temperature: 72C
  threshold #1 for switch 1 module 1 EARL 3 device-1 temperature:
    (sensor value >= 110C) is system minor alarm
  threshold #2 for switch 1 module 1 EARL 3 device-1 temperature:
    (sensor value >= 125C) is system major alarm
switch 1 module 1 EARL 3 device-2 temperature: 68C
  threshold #1 for switch 1 module 1 EARL 3 device-2 temperature:
    (sensor value >= 110C) is system minor alarm
  threshold #2 for switch 1 module 1 EARL 3 device-2 temperature:
    (sensor value >= 125C) is system major alarm

Question:

What are the good threshold to take in consider?
Moreover, on the documentation Catalyst 6840-X Switch Series - Switch Specifications, I didn't find anything regarding the temperature for the EARL. The given information seems to be for the environment and not for the CHIPs or ASICs components.

Is there any official information about the temperature limit we have to follow to prevent early hardware failure?

Thanks & Regards,

Alexandre