I looked up one of the devices mentioned here: Juniper’s 2U-sized PTX10002. Turns out the list price for PTX10002-60C-AC-R is $720,000.00. :-o The traffic volumes these devices are intended for are truly mind-boggling to me (as someone currently building a small 25Gbit network with sub-$1k parts).
Can you explain what the advantages of a 25gbit network are?
It’s the next step up from 10G (which our peak traffic is outgrowing).
If you look at older/used networking gear, 40G QSFP+ might look like the next step, but to me that’s starting to look a bit like an evolutionary dead end at this point.
Low-end 25G routers/switches are relatively cheap, as are 25G SFP28 optics (including bi-directional ones, which get a bit marginal at speeds above 25G).