CUT THROUGH DRAWBACKS: 
\\
https://blog.ipspace.net/2020/12/repost-cut-through-switching.html


----
LAYER 1 SWITCHES AND FPGA: 
\\
  * L1 sw are the good old crosspoint bars. Application: Market Data broadcast
    * with FPGA some additional logic can be introduced directly on L1 (like trading algorithms)
    * Latency can be as low as 4ns (much lower is not possible as 4ns is 120cm at the speed of light)
    * Arista 7130
  * [[https://www.arista.com/assets/data/pdf/Whitepapers/Laymans-Guide-White-Paper.pdf|white_papaer_2018]]