10GBASE-T SFP+ modules need port up-mode on FlexFabric 5945 but work natively on 5940

Question

H3C-SFP-10G-T-SO 10GBASE-T copper modules (from FS or Solid Optics) worked out of the box in a FlexFabric 5940 (JH398A) with the JH181A 24-port SFP+ card, but in a FlexFabric 5945 (JQ076A) with the same card the ports only came up after manually running port up-mode on the interface. The poster asked whether this was normal behaviour and whether the modules were really supported on the 5945.

Hardware: HPE FlexFabric 5945 JQ076A, HPE FlexFabric 5940 JH398A, HPE JH181A SFP+ module
Transceivers: H3C-SFP-10G-T-SO 10GBASE-T SFP+
Form factor: SFP+

Symptoms / messages:

port stays down until port up-mode is configured
10GBASE-T module not auto-detected

photonrunner70 · Answer

A community expert claimed RJ45 10G transceivers are not supported on the 5945 and pointed to the HPE transceiver compatibility guide.

fiberwolf · Answer

Confirmed, the modules are officially listed, but I've decided not to deploy them on the 5945 because relying on forced up-mode seems unreliable for production.

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