We've done a few multi-CL-console setups with the ProPlex PPGBS010R switches from TMB - it's a Cisco switch inside, but ProPlex boxes it up nice with Ethercon connectors and Powercon for the AC inlet. Only complaint is that they are a deep single rack space, and don't fit in a lot of our racks. These particular models can be upgraded to fiber fairly easily, but we haven't yet needed to do so.
Generally we have ProCo DuraCat cables, ruggedized Cat5e and Cat6 with Ethercon ends. Also there's a big 4 channel Cat5e cable made of Gepco CTS4504HDX which we bought as 300' for a rental, thinking to cut it down into shorter segments later. But even 300' isn't much hassle to deal with, so it's stayed at that length. It's fairly thick, almost an inch in diameter, but very light in weight.
Also a bunch of short Cat5e patch cables in different colors, to make it easy to keep track of separate primary/secondary networks within a rack.
BTW, any setup with more than one CL console should have all of the consoles' word clock changed from Internal to Dante, otherwise they'll try to force their own clock on the Dante network. With one console that's OK, with two there will be all sorts of problems that seem to have nothing to do with the clocking.