HP UX IPQos Software 22

Introduction

Overview

	routers, and VLAN priority markings for VLAN-aware switches. You must
	assign DS and VLAN priority marking values in accordance with your
	forwarding scheme.
	In HP-UX IPQoS, both DS fields and VLAN tags can be marked.
Policing	Policing (dropping) may drop some packets to bring a traffic stream into
	compliance with a traffic profile specified via policies. Policing is a subset of
	shaping.
	In HP-UX IPQoS, policing actions are triggered by metering results that
	indicate action is warranted.
Shaping	Shaping enables the delay of some or all of the packets in a traffic stream to
	bring the stream into compliance with a traffic profile. Usually a finite
	buffer is used, and in some cases packets are dropped if there is insufficient
	buffer space to hold delayed packets.
	In HP-UX IPQoS, shaping actions are triggered by metering results that
	indicate action is warranted.
Figure 1-1	Traffic Classification and Conditioning Flow in HP-UX IPQoS

Figure 1-1displays the flow of traffic classification and conditioning components applicable to HP-UX IPQoS. As illustrated, outbound packets under HP-UX IPQoS control may pass through only the marking path, only the metering path or through both paths, depending on the specifics of the active configuration. The components shown in Figure 1-1act as follows:

Chapter 1