System Administration Guide: IP Services

IPQoS Basics

IPQoS enables the Differentiated Services (Diffserv) architecture that is defined by the Differentiated Services Working Group of the Internet Engineering Task Force (IETF). In Oracle Solaris, IPQoS is implemented at the IP level of the TCP/IP protocol stack.

What Are Differentiated Services?

By enabling IPQoS, you can provide different levels of network service for selected customers and selected applications. The different levels of service are collectively referred to as differentiated services. The differentiated services that you provide to customers can be based on a structure of service levels that your company offers to its customers. You can also provide differentiated services based on the priorities that are set for applications or users on your network.

Providing quality of service involves the following activities:

IPQoS Features

IPQoS has the following features:

Where to Get More Information About Quality-of-Service Theory and Practice

You can find information on differentiated services and quality of service from print and online sources.

Books About Quality of Service

For more information on quality-of-service theory and practice, refer to the following books:

Requests for Comments (RFCs) About Quality of Service

IPQoS conforms to the specifications that are described in the following RFCs and the following Internet drafts:

Web Sites With Quality-of-Service Information

The Differentiated Services Working Group of the IETF maintains a web site with links to Diffserv Internet drafts at

Router manufacturers such as Cisco Systems and Juniper Networks provide information on their corporate web sites that describes how Differentiated Services are implemented in their products.

IPQoS Man Pages

IPQoS documentation includes the following man pages: