An Expedited Forwarding PHB

The definition of PHBs (per-hop forwarding behaviors) is a critical part of the work of the Diffserv Working Group.This document describes a PHB called Expedited Forwarding.We show the generality of this PHB by noting that it can be produced by more than one mechanism and give an example of its use to produce at least one service, a Virtual Leased Line.A recommended codepoint for this PHB is given.