Hi @EM_IT 

Thanks for posting in our business forum.

EM_IT wrote

Hi everyone, we have recently switched to a TPLINK OMADA network infrastructure, with an ER8411 v1.0, a pair of SX3016F v1.20 for distribution, various SG3428XMP and SG3452XP.
Where possible we have adopted fiber optic backbones, for some "peripheral" situations already wired in copper (all cat.6) they used SFP SM5310T with rj45.
With the growth of network users on these latter switches, with a banal ping we noticed the loss of one (only) packet every (on average) 50/60 requests, despite always having a duration of < 1 ms.
It was suggested to us to check the temperature of the sfp and, with a bit of surprise, not only did we find them hot (too affectionate) but with a Flir thermal camera we recorded really "important" values.

 

 

The first question is whether these temperatures, in your opinion, are normal and could be a cause of "degradation" of the line. The switches are in cabinets in an industrial environment, they are not air conditioned or anything else (and they couldn't even be) and they are certainly not in prohibitive conditions (we are not talking about a foundry for example), I think around 25°-28° .

Despite having bypassed these SFPs, when using an uplink switch port the problem reoccurs (occasional but repetitive loss) even when pinging different "network portions" (packet loss does not occur at the same time).
On this topic (second question) we would like to ask for advice on which tool (intuitive and fast) to use in order to trace or at least limit the problem.
Is it possible to track this anomaly in some way from the Omada dashboard?

In the guide we have, we have explained that the 10Gbps SFP might get high temp and we recommend you connect it separately.

Common Questions About SFP Module and Media Converter

10Gbps is inevitably to become hot during use. This is normal and why 10Gbps NIC are equipped with extra fans and you may add extra fans for heat dissipation.

It would be normal to become hot. Hot may relate to the degradation in the speed but this is not always the case. But we do recommend avoiding overheat which can be a cause for performance degradation.

It cannot be traced on the Omada dashboard. If you need to view the SFP data, the power voltage and stuff, you need to enter the CLI and refer to the CLI user guide which we have related commands for viewing the SFP.

Now you can simply add a fan or remove other links to observe if the performance issue disappears. If it does, then this means the problem is the overheat.