#====#
                              H    H
+ - - - - - - - - - - - - -+  H    H
' Router:                  '  H    H
'                          '  H    v
' +-------+     +--------+ '  H  +---------+
' | Input | --> | Output | '  H  | Network |
' +-------+     +--------+ '  H  +---------+
'                          '  H
+ - - - - - - - - - - - - -+  H
                  H           H
                  #===========#