Title: Signaled Preemption Priority Policy Element
Author(s): S. Herzog.
Status: PROPOSED STANDARD
Date: Oct 2001
Length: 21990
Obsoletes: RFC2751
This document describes a preemption priority policy element for use by signaled policy based admission protocols (such as the Resource ReSerVation Protocol (RSVP) and Common Open Policy Service (COPS).
Preemption priority defines a relative importance (rank) within the set of flows competing to be admitted into the network. Rather than admitting flows by order of arrival (First Come First Admitted) network nodes may consider priorities to preempt some previously admitted low priority flows in order to make room for a newer, high- priority flow.
This memo corrects an RSVP POLICY_DATA P-Type codepoint assignment error in RFC2751.
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