2.2.1. Router Receive Processing

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Original RFC Text

2.2.1.  Router Receive Processing

   A router receiving the Traffic Classification Sub-Data Item MUST
   validate the information on receipt, prior to using the carried
   information, including potentially updating the data behavior as
   determined by the extension requiring the use of the Sub-Data Item.
   Validation failures MUST be treated as an error as described in
   Section 2.1.1.

   Once validated, the receiver MUST ensure that each DS Field value is
   listed only once across the whole Traffic Classification Data Item.
   Note that this check is across the Data Item and not the individual
   Sub-Data Items.  If the same DS Field value is listed more than once
   within the same Traffic Classification Data Item, the Data Item MUST
   be treated as an error as described in Section 2.1.1.