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BAT
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sfp-sfpplus1 high temperature warning!

Fri Jan 24, 2025 12:43 am

Hello everyone ,
I am a new Mikrotik user and I have renewed my personal network equipment with a RB5009UG+S+ router and a CRS304-4XG-in. I use a SFP+ module between the two products and my problem is the excessive temperature with this SFP+ module. Winbox displays me average temperature alerts of 92 degrees Celsius and the journal constantly displays me warnings:
sfp-sfpplus1 high temperature warning! Please, improve module cooling/placement or use different type of modules for this solution
I specify that this module is a Mikrotik S+RJ10 revision 2.16.
I trying to find a issue to this problem to changing te rate but unsuccessfully.
Thanks for your help.
 
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chechito
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Re: sfp-sfpplus1 high temperature warning!  [SOLVED]

Fri Jan 24, 2025 1:30 am

S+-RJ10 general guidance
https://help.mikrotik.com/docs/spaces/R ... l+guidance
...or modules are used in passive cooling devices, the network administrator has to ensure additional cooling. The airflow around the device should be increased or the overall ambient temperature should be lowered to keep the temperature of the transceivers within the recommended range.

RB5009 is a passive cooled device so you must somehow provide aditional cooling to the S+-RJ10 module
 
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Re: sfp-sfpplus1 high temperature warning!

Fri Jan 24, 2025 1:50 am

@chechito

i see that now :) i think to try to put one heatsink on the module with a thermal pad . Thanks for your reply
 
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k6ccc
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Re: sfp-sfpplus1 high temperature warning!

Fri Jan 24, 2025 4:44 am

The RJ10 SFP produces a huge amount of heat. Best solution if you can do it is to swap to fiber modules instead.
 
ConradPino
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Re: sfp-sfpplus1 high temperature warning!

Fri Jan 24, 2025 7:00 am

Sonic Internet is installing 10G FTTH; their ONT is RJ45 only. *sigh*
I learned at 2.5G with CRS326 module shuts down above 87 F ambient; CRS326 CRS309 stacked on solid shelf in still air.
I have since come to love SolidRack 10 with 1U separation above and below all networking devices plus external fans.
Next S+RJ10 home is CRS309 or CRS305; both seem to have better heat pathways. If necessary, the FTC11XG!