Date: Sun, 21 Jul 2019 22:40:04 +0800 From: Ronald Khoo <ronald@taufilms.com> To: freebsd-net@freebsd.org Subject: does qlnxe 100G support DAC splitter? Message-ID: <CAAhM9JGqjObM3E9GqzGWsm4-U8RDRJNRQ8PWy_B_4gRvbE0cVw@mail.gmail.com>
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hi freebsd-net, two questions: a. does the qlnxe driver support treating one 100G port as four separate 25G ethernet interfaces via a QSFP28 to 4 x SP25 DAC splitter cable? b. and does it work for one of those to be plugged into a 10G SFP+ switch? trying to figure out an upgrade path from 10G to 25G to 100G on a slot constrained server -- a recent TYAN which only has one proprietary slot for a high speed NIC and I'd like to be able to connect to both a current 10G switch as well as a 100G switch in future (at 25 while migrating and then at 100 once done). the alternative would be to buy a dual 10G NIC initially and then throw it away when going to 100G -- I'm wondering if I can avoid that. thanks! ronald
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