MikroTik

Posted: **Thu Jun 22, 2023 7:05 pm**

To my knowledge, this problem was not present on 7.8.

HW:
FS DAC cable - SFP
CRS310-1G-5S-4S+ (7.8 -> 7.10)
CRS112-8P-4S (7.8 -> 7.10)

DAC is in the SFP slot on both of the switches.

I upgraded the switches from 7.8 to 7.10. No incident, except the DAC cable between the switches stopped working. The reason appears to be that both switches now read the temperature of the DAC to be 255 degrees Celsius, which causes temperature shutdown for the DAC interface. If I set the treshold temperature to 256 on both ends, the DAC starts working. The actual temperature if the DAC is something like 40-50 degrees C.

Posted: **Tue Aug 08, 2023 2:47 pm**

Hello!
Since today I also have the problem the temperature of two of my sfp modules (DAC) is recognized as 255.
Ok, set the limit to 256 and just ignore. So the DAC is working.

BUT:
Because of this recognized temperature the switch fans are running with full speed now. I am using this switch in my living room, so it's a big problem!
Are there any possibilities to switch off the monitoring of a module's temperature completely?

yours sincerely
Sebastian Braun

PS:
My system:

[admin@MikroTik] /system/resource> print            
                   uptime: 5m51s
                  version: 7.11rc2 (testing)
               build-time: Aug/03/2023 10:50:21
         factory-software: 6.41
              free-memory: 952.7MiB
             total-memory: 1024.0MiB
                      cpu: ARM
                cpu-count: 2
                 cpu-load: 2%
           free-hdd-space: 1640.0KiB
          total-hdd-space: 16.0MiB
  write-sect-since-reboot: 100
         write-sect-total: 548890
        architecture-name: arm
               board-name: CRS317-1G-16S+
                 platform: MikroTik

Posted: **Tue Aug 08, 2023 2:56 pm**

[ I want to delete this post, but I just get a white page. ]

MikroTik

FS 1G DAC cable on 7.10 - wrong temperature

FS 1G DAC cable on 7.10 - wrong temperature

Re: FS 1G DAC cable on 7.10 - wrong temperature

Re: FS 1G DAC cable on 7.10 - wrong temperature