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Class Selector DSCP Values

Class Selector DSCP Values

The Class Selector (CS) DSCP values provide backward compatibility with IP Precedence. By examining the first 3 bits in each binary DSCP value in the following table, these 8 DSCP values match 8 different values that can be encoded in the 3-bit IP Precedence field.

 Name of DSCP Class Selector  Binary Value of DSCP
 Equivalent IP Precedence Value
 Default  0 0 0 0 0 0 0
 CS1 0 0 1 0 0 0  1
CS2 0 1 0 0 0 0  2
 CS3  0 1 1 0 0 0  3
 CS4 1 0 0 0 0 0  4
 CS5  1 0 1 0 0 0  5
 CS6  1 1 0 0 0 0  6
 CS7  1 1 1 0 0 0  7

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