2. Extension Usage and Identification

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Original RFC Text

2.  Extension Usage and Identification

   The extension defined in this document is built on the mechanisms and
   processing defined in [RFC9892] and [RFC9893].  To indicate that the
   Diffserv Aware Credit Window Extension is to be used, an
   implementation MUST include the Diffserv Aware Credit Window
   Extension Type value in the Extensions Supported Data Item (see
   Section 13.6 of [RFC8175]).  The Extensions Supported Data Item is
   sent and processed according to [RFC8175].  Any implementation that
   indicates the use of the Diffserv Aware Credit Window Extension MUST
   support all message types, Data Items, the Diffserv Traffic
   Classification Sub-Data Item, and all related processing defined in
   [RFC9892] and [RFC9893].

   The Diffserv Aware Credit Window Extension Type value is 6.  See
   Section 5.