larger cover

Add To My Wish List

Register your product to gain access to bonus material or receive a coupon.

IP Quality of Service


  • Sorry, this book is no longer in print.
Not for Sale
  • Description
  • Sample Content
  • Updates
  • Copyright 2001
  • Edition: 1st
  • Book
  • ISBN-10: 1-57870-116-3
  • ISBN-13: 978-1-57870-116-2

The complete resource for understanding and deploying IP quality of service for Cisco networks

Learn to deliver and deploy IP QoS and MPLS-based traffic engineering by understanding:

  • QoS fundamentals and the need for IP QoS
  • The Differentiated Services QoS architecture and its enabling QoS functionality
  • The Integrated Services QoS model and its enabling QoS functions
  • ATM, Frame Relay, and IEEE 802.1p/802.1Q QoS technologies and how they work with IP QoS
  • MPLS and MPLS VPN QoS and how they work with IP QoS
  • MPLS traffic engineering
  • Routing policies, general IP QoS functions, and other miscellaneous QoS information

Quality-of-service (QoS) technologies provide networks with greater reliability in delivering applications, as well as control over access, delay, loss, content quality, and bandwidth. IP QoS functions are crucial in today's scalable IP networks. These networks are designed to deliver reliable and differentiated Internet services by enabling network operators to control network resources and use. Network planners, designers, and engineers need a thorough understanding of QoS concepts and features to enable their networks to run at maximum efficiency and to deliver the new generation of time-critical multimedia and voice applications.

IP Quality of Service serves as an essential resource and design guide for anyone planning to deploy QoS services in Cisco networks. Author Srinivas Vegesna provides complete coverage of Cisco IP QoS features and functions, including case studies and configuration examples. The emphasis is on real-world application-going beyond conceptual explanations to teach actual deployment.

IP Quality of Service is written for internetworking professionals who are responsible for designing and maintaining IP services for corporate intranets and for service provider network infrastructures. If you are a network engineer, architect, manager, planner, or operator who has a rudimentary knowledge of QoS technologies, this book will provide you with practical insights on what you need to consider when designing and implementing various degrees of QoS in the network. Because incorporating some measure of QoS is an integral part of any network design process, IP Quality of Service applies to all IP networks-corporate intranets, service provider networks, and the Internet.

Online Sample Chapter

Introducing IP Quality of Service

Downloadable Sample Chapter

Download - 1.16 MB -- Chapter 1: Introducing IP Quality of Service

Table of Contents


1. Introducing IP Quality of Service.

Levels of QoS. IP QoS History. Performance Measures. QoS Functions. Layer 2 QoS Technologies. Multiprotocol Label Switching. End-to-End QoS. Objectives. Audience. Scope and Limitations. Organization.

2. Differentiated Services Architecture.

Intserv Architecture. Diffserv Architecture.

3. Network Boundary Traffic Conditioners: Packet Classifier, Marker, and Traffic Rate Management.

Packet Classification. Packet Marking. The Need for Traffic Rate Management. Traffic Policing. Traffic Shaping.

4. Per-Hop Behavior: Resource Allocation I.

Scheduling for Quality of Service (QoS) Support. Sequence Number Computation-Based WFQ. Flow-Based WFQ. Flow-Based Distributed WFQ (DWFQ). Class-Based WFQ. Priority Queuing. Custom Queuing. Scheduling Mechanisms for Voice Traffic.

5. Per-Hop Behavior: Resource Allocation II.

Modified Weighted Round Robin (MWRR). Modified Deficit Round Robin (MDRR). MDRR Implementation.

6. Per-Hop Behavior: Congestion Avoidance and Packet Drop Policy.

TCP Slow Start and Congestion Avoidance. TCP Traffic Behavior in a Tail-Drop Scenario. RED—Proactive Queue Management for Congestion Avoidance. WRED. Flow WRED. ECN. SPD.

7. Integrated Services: RSVP.

RSVP. Reservation Styles. Service Types. RSVP Media Support. RSVP Scalability. Case Study 7-1: Reserving End-to-End Bandwidth for an Application Using RSVP. Case Study 7-2: RSVP for VoIP.


8. Layer 2 QoS: Interworking with IP QoS.

ATM. ATM Interworking with IP QoS. Frame Relay. Frame Relay Interworking with IP QoS. The IEEE 802.3 Family of LANs.

9. QoS in MPLS-Based Networks.

MPLS. MPLS with ATM. Case Study 9-1: Downstream Label Distribution. MPLS QoS. End-to-End IP QoS. MPLS VPN. Case Study 9-3: MPLS VPN. MPLS VPN QoS. Case Study 9-4: MPLS VPN QoS.


10. MPLS Traffic Engineering.

The Layer 2 Overlay Model. RRR. TE Trunk Definition. TE Tunnel Attributes. Link Resource Attributes. Distribution of Link Resource Information. Path Selection Policy. TE Tunnel Setup. Link Admission Control. TE Path Maintenance. TE-RSVP. IGP Routing Protocol Extensions. TE Approaches. Case Study 10-1: MPLS TE Tunnel Setup and Operation.


Appendix A: Cisco Modular QoS Command-Line Interface.

Traffic Class Definition. Policy Definition. Policy Application. Order of Policy Execution.

Appendix B: Appendix B Packet Switching Mechanisms.

Process Switching. Route-Cache Forwarding. CEF.

Appendix C: Routing Policies.

Using QoS Policies to Make Routing Decisions. QoS Policy Propagation Using BGP.

Appendix D: Real-time Transport Protocol (RTP).
Appendix E: General IP Line Efficiency Functions.

The Nagle Algorithm. Path MTU Discovery. TCP/IP Header Compression. RTP Header Compression.

Appendix F: Link-Layer Fragmentation and Interleaving.
Appendix G: IP Precedence and DSCP Values.


Download - 168 KB -- Index

Cisco Press Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Cisco Press and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Cisco Press products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by Cisco Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive:

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020