It is our amazing new 10G switch.
Purchased in early 2017 as part of the revamp of our vm cluster. It is currently configured with 4 10G SFP+ modules, which connect it to Murasoi, Maltair, Medico, and Molmol. It also has a 1Gbit link to curviceps to connect it to the rest of the network.
see Network for more information.
Ubiquiti EdgeSwitch 16-XG that features 12 SFP+ slots and four RJ45 10GBASE-T ports.
Walnut has a nice web interface at walnut.mgmt. Alternatively a terminal interface can be opened by ssh or through the console port on the switch.