@Oliv2831

Oliv2831 wrote

Lately, I had bad experiences with gigabit/copper SFP modules in TL-SG2428P.

 

For an unknown reason, it seems one module stopped to forward some incoming broadcast on VLAN1.

Unfortunately, I couldn't further investigate and I used another SFP module on another SFP slot to restore the service.

 

I also remember having months ago, to switch from one gigabit/Copper/SFP port to a standard Gigabit port to restore communications with a remote host.

 

1. If I'm not mistaken, looking at switch web management app, you can't read much details about currently plugged-in SFP modules (temperature, vendor, S/N, device presence,...).

Is there another (CLI, log fuiles, ...) to read such data ?

 

2. What is your experience with TP-Link SFP modules ?

 

3. Is it possible or recommended to use third party SFP modules ?

1. CLI features depends on the switch.  I can get some info on my switch, but not things like temp, volts.
2. (**Spoiler alert for Q3) I have not used the TP-Link branded modules, but I assume they will work fine.  Just verify that the module is compatable with your switch and if there are any other restrictions.  Regardless of brand, I've followed this positioning guide from the TP-Link's SFP+ 10G RJ45 module installation guide.
3. Yes, it's possible to use other brands.  I don't think you'll get an official recomendation to use another brand, but if you do and have an issue you may get some finger pointing.  From a support perspective, one vendor is a plus, but I've prioritized cost over supportability.  I do stick with brands that have a good track record of compatability with TP-Link and no issues to date.

In general, for SFP/SFP+ links, my prefereces are DAC and then Fiber or limited RJ45 use.

  @Oliv2831, yes a device is connected. I think this is either a limitation of my sfp module or RJ45 modules in general. You need to check the port status to see if there is a valid connection. In this case, it's a 10G sfp+ transceiver with a 2.5G device on the other end. Switch shows a 10G active connection. iPerf confirmed 2.5G, so technically it all works, but the transceiver is masking the true connection info.