We have an MSN3700-VS2R, and are trying to connect a device that only has an RJ45 10/100/1G port. It’s a UPS, so installing a ConnectX NIC is really not an option.
Are there any RJ45 transceivers for QSPF56? I see some for QSPF28, but I’m guessing that wouldn’t work well.
Thanks.
Hi Juergen,
The SN3700 switch can accommodate up to 128 ports at 1g speeds by using either a 4x breakout (also called “pig-tail”) optical splitter or a DAC/AOC splitter (transceiver & cable are bonded and cannot be separated, these are treated as one unit). The QSA adapter can also be used to convert a single QSFP port into a single SFP/SFP+ port. The Cumulus user guide has the required configuration here:
https://docs.nvidia.com/networking-ethernet-software/cumulus-linux-58/Layer-1-and-Switch-Ports/Interface-Configuration-and-Management/Switch-Port-Attributes/
You can use a single SFP (10/25/50G) transceiver in a QSFP (100/200/400G) port with QSFP-to-SFP Adapter (QSA). Set the port speed to the SFP speed with the
nv set interface <interface> link speed <speed>command. Do not configure this port as a breakout port.
Here is a link to the Nvidia QSA product page, you will see there are multiple parts depending on the desired speed of the SFP module, higher speeds require special QSA adapters (SFP28/SFP56) but the regular QSA can accommodate 1g or 10g speeds.
-Ryan