HP-UX IPQoS A.01.00 Administrator's Guide (October 2005)

Introduction
HP-UX IPQoS Architecture
Chapter 1 27
HP-UX IPQoS Architecture
Figure 1-2 displays a high-level overview of the HP-UX IPQoS architecture.
Figure 1-2 Architectural Overview
As shown in Figure 1-2, HP-UX IPQoS operates in both user space and kernel space. Also
shown in Figure 1-2, HP-UX IPQoS inserts a module between the IP and the DLPI layers,
into the STREAMS plumbed by ifconfig. To insert this module:
• HP-UX 11i v1: HP-UX IPQoS uses the autopush mechanism.