_________ 
                               | |    ,------.
                 L4S (L) queue | |===>| ECN  |
                    ,'| _______|_|    |marker|\
                  <'  |         |     `------'\\
                   //`'         v        ^ p_L \\
                  //       ,-------.     |      \\
                 //        |Native |p'_L |       \\,.
                //         |  L4S  |--->(MAX)    <  |   ___
   ,----------.//          |  AQM  |     ^ p_CL   `\|.'Cond-`.
   |  IP-ECN  |/           `-------'     |          / itional \
==>|Classifier|            ,-------.   (k*p')       [ priority]==>
   |          |\           |  Base |     |          \scheduler/
   `----------'\\          |  AQM  |---->:        ,'|`-.___.-'
                \\         |       |p'   |      <'  |
                 \\        `-------'   (p'^2)    //`'
                  \\            ^        |      //
                   \\,.         |        v p_C //
                   <  | _________     .------.//
                    `\|   |      |    | Drop |/
              Classic (C) |queue |===>|/mark |
                        __|______|    `------'

Legend: ===> traffic flow
        ---> control dependency