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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…
