Questions tagged “qsa”

4votes

1 answer

36views

On-board ConnectX-3 shows no link with a QSFP-to-SFP+ adapter plus SFP+ optic; Mellanox hybrid cable fixes it

Intel-branded servers witth a built-in ConnectX-3 (MT27500, ConnectX3-A1-WSP-QDR, firmware 2.36.5000, mlx4en 4.6, kernel 4.19.68) lost link when a QSFP-to-SFP+ adapter with an SFP+ transceiver replaced direct QSFP cabling: ethtool reported Link detected: no and speed Unknown!, port in ETH moe. The…

fiberwolf FR asked 14 days ago

2votes

1 answer

46views

DGX Spark (ConnectX-7) sees no link through a cheap QSFP-to-SFP+ adapter into a 10G network

A DGX Spark with a ConnectX-7 NIC was connected to an existing 10G SFP+ optical network through an inexpensive QSFP-to-SFP+ adapter bought on AliExpress; neither DACs nor standard optical modules produced any link. The poster asked whether the setup could work at all and how to configure it…

connectx-7 dgx-spark nvidia qsa qsfp-to-sfp-adapter

coaxtech75 IT asked 15 days ago

3votes

7comments

84views

QSA adapter in a SONiC QSFP28 cage: the 10G optic links but reports no DDM

We are reusing a pile of 10G optics on a whitebox switch running SONiC, so a few QSFP28 cages are fitted with QSA-style adapters (10GTek QSA-100A) carrying plain 10G SFP+ modules. Mechanically and electrically this is fine. The management side is where it falls apart. switch: 1U whitebox, SONiC…

DDM / DOM qsa QSFP28 sfputil sonic

linkguru KZ asked 22 days ago