Hi all
I have the following hardware:
- 2x CRS328-24P-4S+ running 6.47.9 (long-term) manufactured Feb/08/2021 12:48:33 and routerboard on 6.47.9
- 5x SFP+ are Vendor Part Number: XS+31LC10D, Vendor revision 1.0, Manufacturing Date: 21-04-08
- 2x Using SM fiber cable FC-SM-300 by Ubiquiti Networks which should be compatible:
https://www.balticnetworks.com/products ... ble-300-ft
SFP+ are normally recognized and work, but loose connectivity after couple of days running fine.
Issue repeats regularly, where SFP+ is always marked as "present", but connection is lost "RX Loose" after a while.
Sometimes connection is lost immediately with these SFP+ modules and sometimes it takes a while.
Issue is confirmed not present on 1 Gbps SFP modules in the same switch (either MM or SM).
As per info from note #9 on this webpage:
https://wiki.mikrotik.com/wiki/MikroTik ... ansceivers
these SFP+ modules should be compatible, as of October 2021 manufactured devices... guess this relates to the switch, not SFP+ modules.
"9. XS+31LC10D, XS+2733LC15D -- full support has been added to CSS/CRS326-24G-2S+ and CRS328-24P-4S+ switches manufactured from October 2021."
So I swapped the cables, switches and SFP+ modules of the same model, but the issue still remains... thus not likely a hardware malfunction of a specific component.
I also tried running on 6.49.6 (stable), but the issue is still the same.
On the same page linked above I have found info on how to apparently get this to work, by issuing this command:
/interface ethernet set sfp-sfpplus1 auto-negotiation=no speed=10Gbps full-duplex=yes sfp-rate-select=low
However, option sfp-rate-select is not present in 6.47.9 (long-term), however 6.49.6 (stable) does have that option.
Interfaces are by default set to "high" sfp-rate-select, but I can switch them all to "low" on 6.49.6.
Either way, after setting all 4x SFP+ with the command above on 6.49.6 like proposed and rebooting the entire switch, issue is still the same.
SFP+ modules are present, set to "low" and manual to 10 Gbps speed just fine, but "no link" status now even after booted up, and it seems to persist never connecting at all anymore.
SFP+ module settings/status are as follows: 1310.00 nm, 43 C, 3.270 V, 41 mA, -8.576 dBm
Judging from the jbl42 post above, this voltage would correspond to the "high" settings for voltage so not sure if settings actually applied.
So my best guess is that it seems "low" setting is not applied, which might be impacting this command not to work as advised.
Can you please advise further?
Thanks,
Tihovsky