                                                       Differentiated Services Field Codepoints

   Last Updated
           2002-03-27

   Note

 The DSCP field within the DS field is capable of conveying 64 distinct
 codepoints.  The codepoint space is divided into three pools for the
 purpose of codepoint assignment and management: a pool of 32
 codepoints (Pool 1) to be assigned by Standards Action as defined in
 [RFC2434], a pool of 16 codepoints (Pool 2) to be reserved for
 experimental or Local Use (EXP/LU) as defined in [RFC2434], and a pool
 of 16 codepoints (Pool 3) which are initially available for experimental
 or local use, but which should be preferentially utilized for
 standardized assignments if Pool 1 is ever exhausted.  The pools are
 defined in the following table (where 'x' refers to either '0' or
 '1').

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   Registry included below

     * Differentiated Services Field Codepoints

          * Pool 1 Codepoints

Differentiated Services Field Codepoints

   Reference
           [RFC2474]

   Pool Codepoint Space  Registration Procedure                                   Note
    1       xxxxx0      Standards Action
    2       xxxx11      Experimental or Local Use Reserved for experimental or Local Use
    3       xxxx01      Experimental or Local Use May be utilized for future Standards Action allocations as necessary

  Pool 1 Codepoints

   Registration Procedures
           Standards Action

   Reference
           [RFC2474]

    Name  Space  Reference
   CS0    000000 [RFC2474]
   CS1    001000 [RFC2474]
   CS2    010000 [RFC2474]
   CS3    011000 [RFC2474]
   CS4    100000 [RFC2474]
   CS5    101000 [RFC2474]
   CS6    110000 [RFC2474]
   CS7    111000 [RFC2474]
   AF11   001010 [RFC2597]
   AF12   001100 [RFC2597]
   AF13   001110 [RFC2597]
   AF21   010010 [RFC2597]
   AF22   010100 [RFC2597]
   AF23   010110 [RFC2597]
   AF31   011010 [RFC2597]
   AF32   011100 [RFC2597]
   AF33   011110 [RFC2597]
   AF41   100010 [RFC2597]
   AF42   100100 [RFC2597]
   AF43   100110 [RFC2597]
   EF PHB 101110 [RFC3246]
