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RFC’s 2474, 2598, and 2597 have defined the Per Hop Behaviors of DSCP values as default, Assured Forwarding (AF), Class Selector
(CS), and Expedited Forwarding. Their binary values are show below:
<0-63> - Overwrite the DSCP field with the specified codepoint value
af11 - Overwrite the DSCP field with AF11 dscp (0b001010)
af12 - Overwrite the DSCP field with AF12 dscp (0b001100)
af13 - Overwrite the DSCP field with AF13 dscp (0b001110)
af21 - Overwrite the DSCP field with AF21 dscp (0b010010)
af22 - Overwrite the DSCP field with AF22 dscp (0b010100)
af23 - Overwrite the DSCP field with AF23 dscp (0b010110)
af31 - Overwrite the DSCP field with AF31 dscp (0b011010)
af32 - Overwrite the DSCP field with AF32 dscp (0b011100)
af33 - Overwrite the DSCP field with AF33 dscp (0b011110)
af41 - Overwrite the DSCP field with AF41 dscp (0b100010)
af42 - Overwrite the DSCP field with AF42 dscp (0b100100)
af43 - Overwrite the DSCP field with AF43 dscp (0b100110)
cs1 - Overwrite the DSCP field with CS1(precedence 1) dscp (0b001000)
cs2 - Overwrite the DSCP field with CS2(precedence 2) dscp (0b010000)
cs3 - Overwrite the DSCP field with CS3(precedence 3) dscp (0b011000)
cs4 - Overwrite the DSCP field with CS4(precedence 4) dscp (0b100000)
cs5 - Overwrite the DSCP field with CS5(precedence 5) dscp (0b101000)
cs6 - Overwrite the DSCP field with CS6(precedence 6) dscp (0b110000)
cs7 - Overwrite the DSCP field with CS7(precedence 7) dscp (0b111000)
default - Overwrite the DSCP field with default dscp (0b000000)
ef - Overwrite the DSCP field with EF dscp (0b101110)