1. Introduction

   As the Diffserv work has evolved, there have been several cases where
   terminology has needed to be created or the definitions in Diffserv
   standards track RFCs have needed to be refined.  Some minor technical
   clarifications were also found to be needed.  This memo was created
   to capture group agreements, rather than attempting to revise the
   base RFCs and recycle them at proposed standard.  It updates in part
   RFC 2474prop, RFC 2475 and RFC 2597prop.  RFC 2598(-> 3246prop) has been obsoleted by RFC
   3246prop, and clarifications agreed by the group were incorporated in
   that revision.