Cisco IOS Releases: The Complete Reference

Overview

Cisco IOS software is the internetworking brain for Cisco switches and routers. Releases are consistantly evolving, being modified and enhanced, and this creates multiple versions that are viable. Different releases contain different features to accomodate the level of complexity of the various networks. A Engineers chooses the correct version by number and types of routers or switches in his network, the nature of business that is performed over the network, and the applications the network is supporting. They ...
See more details below
Available through our Marketplace sellers.
Other sellers (Paperback)
  • All (8) from $1.99   
  • Used (8) from $1.99   
Close
Sort by
Page 1 of 1
Showing All
Note: Marketplace items are not eligible for any BN.com coupons and promotions
$1.99
Seller since 2009

Feedback rating:

(24928)

Condition:

New — never opened or used in original packaging.

Like New — packaging may have been opened. A "Like New" item is suitable to give as a gift.

Very Good — may have minor signs of wear on packaging but item works perfectly and has no damage.

Good — item is in good condition but packaging may have signs of shelf wear/aging or torn packaging. All specific defects should be noted in the Comments section associated with each item.

Acceptable — item is in working order but may show signs of wear such as scratches or torn packaging. All specific defects should be noted in the Comments section associated with each item.

Used — An item that has been opened and may show signs of wear. All specific defects should be noted in the Comments section associated with each item.

Refurbished — A used item that has been renewed or updated and verified to be in proper working condition. Not necessarily completed by the original manufacturer.

Good
Our feedback rating says it all: Five star service and fast delivery! We have shipped four million items to happy customers, and have one MILLION unique items ready to ship today!

Ships from: Toledo, OH

Usually ships in 1-2 business days

  • Canadian
  • International
  • Standard, 48 States
  • Standard (AK, HI)
  • Express, 48 States
  • Express (AK, HI)
$1.99
Seller since 2009

Feedback rating:

(7960)

Condition: Very Good
Appearance of only slight previous use. Cover and binding show a little wear. All pages are undamaged with potentially only a few, small markings. Help save a tree. Buy all your ... used books from Green Earth Books. Read. Recycle and Reuse. Read more Show Less

Ships from: Portland, OR

Usually ships in 1-2 business days

  • Canadian
  • International
  • Standard, 48 States
  • Standard (AK, HI)
  • Express, 48 States
  • Express (AK, HI)
$1.99
Seller since 2009

Feedback rating:

(11344)

Condition: Very Good
Light wear to edges and pages. Cover and spine show no easily noticeable damage. A tradition of southern quality and service. All books guaranteed at the Atlanta Book Company. Our ... mailers are 100% recyclable. Read more Show Less

Ships from: Atlanta, GA

Usually ships in 1-2 business days

  • Canadian
  • International
  • Standard, 48 States
  • Standard (AK, HI)
  • Express, 48 States
  • Express (AK, HI)
$1.99
Seller since 2007

Feedback rating:

(10504)

Condition: Like New
Almost in new condition. Book shows only very slight signs of use. Cover and binding are undamaged and pages show minimal use . Millions of satisfied customers and climbing. ... Thriftbooks is the name you can trust, guaranteed. Spend Less. Read More. Read more Show Less

Ships from: Auburn, WA

Usually ships in 1-2 business days

  • Canadian
  • International
  • Standard, 48 States
  • Standard (AK, HI)
  • Express, 48 States
  • Express (AK, HI)
$1.99
Seller since 2010

Feedback rating:

(5952)

Condition: Good
This book has a light amount of wear to the pages, cover and binding. Blue Cloud Books ??? Hot deals from the land of the sun.

Ships from: Phoenix, AZ

Usually ships in 1-2 business days

  • Canadian
  • International
  • Standard, 48 States
  • Standard (AK, HI)
  • Express, 48 States
  • Express (AK, HI)
$29.91
Seller since 2015

Feedback rating:

(362)

Condition: Good
Possible retired library copy, some have markings or writing. May or may not include accessories such as CD or access codes.

Ships from: Chatham, NJ

Usually ships in 1-2 business days

  • Canadian
  • International
  • Standard, 48 States
  • Standard (AK, HI)
  • Express, 48 States
  • Express (AK, HI)
$29.91
Seller since 2015

Feedback rating:

(362)

Condition: Very Good
Very good.

Ships from: Chatham, NJ

Usually ships in 1-2 business days

  • Canadian
  • International
  • Standard, 48 States
  • Standard (AK, HI)
  • Express, 48 States
  • Express (AK, HI)
$93.74
Seller since 2015

Feedback rating:

(362)

Condition: Like New
As new.

Ships from: Chatham, NJ

Usually ships in 1-2 business days

  • Canadian
  • International
  • Standard, 48 States
  • Standard (AK, HI)
  • Express, 48 States
  • Express (AK, HI)
Page 1 of 1
Showing All
Close
Sort by
Sending request ...

Overview

Cisco IOS software is the internetworking brain for Cisco switches and routers. Releases are consistantly evolving, being modified and enhanced, and this creates multiple versions that are viable. Different releases contain different features to accomodate the level of complexity of the various networks. A Engineers chooses the correct version by number and types of routers or switches in his network, the nature of business that is performed over the network, and the applications the network is supporting. They have difficulty in choosing the correct IOS version because there are so many and the naming conventions are complex. This book is the ultimate guide to determine how to optimize migration to new IOS releases. This book provides background on the evolution of IOS and explains the logical structure of its naming conventions. Detailed table indicate the features, uses migration paths, strengths, for each release so that you can choose the perfect release for your network.
Read More Show Less

Product Details

  • ISBN-13: 9781578701797
  • Publisher: Cisco Press
  • Publication date: 3/22/2000
  • Series: Networking Technology Series
  • Pages: 300
  • Product dimensions: 7.71 (w) x 9.45 (h) x 1.12 (d)

Read an Excerpt

Chapter 1: Evolution of the Cisco IOS System Architecture

Cisco IOS is the original brand name for Cisco's routing software. As Cisco's technology offerings expanded, IOS diversified and became a series of tightly linked internetworking software products. Although its brand name might still equate to routing software, the continuing evolution of IOS has seen the software migrate to support LAN, ATM, xDSL, and WAN switches as well as provide important functionality for network applications such as network security, network management, DHCP, and web scaling services. This chapter defines Cisco IOS, the evolution of its architecture, and the goals and benefits of this architecture. This background information helps explain the formation and evolution of the various Cisco IOS software releases described in this book.

Cisco IOS Definition

The Cisco IOS software is a sophisticated operating system optimized for internetworking. It provides an architecture that is dissociated from hardware, enabling adaptation to changing network technologies through dynamic feature integration and upgrade.

In short, Cisco IOS can be thought of as a highly intelligent internetworking administrator that manages and controls complex distributed network resources and functions.

Because of the dynamic nature of Cisco IOS, the software has taken a progressive form of development and deployment, evolving with the market it serves. Cisco engineers have successively adapted the underlying architecture of Cisco IOS to enable multidimensional growth and frequent incorporation of new features and developments. Key to this growth and market benefit are the following two related aspectsof the Cisco IOS architecture:

  • A transition from a monolithic foundation to a more modular structure
  • The underlying division of Kernel (General) services from Network services
This evolution has thus far culminated in the capability of Cisco IOS engineers to develop interoperable, independent features sets for various networking solutions.

Move Toward Modularity

From an early inclination toward a monolithic architecture, Cisco IOS software moved to a more modular architecture. This structure allows two fundamental opportunities:

  • Compartmentalized, interchangeable code modules that access core services separately, decreasing or eliminating interdependencies and making the software easier to port.
  • Multiple-track, feature development based on business units. which is the core of current Cisco IOS development strategies. This enables multiple, feature- or platformspecific releases that are all based on the same original source code. The upcomimg sections provide more details about these features.

Division of Kernel and Network Services

The IOS architecture can be represented as two separate fundamental services: Kernel services and Network services. IOS Kernel services provide all functions necessary for IOS multiplatform portability and scalability. IOS Network services represent all functionality built on top of Kernel services to deliver IOS internetworking features. By disconnecting the two categories of services from each other, Cisco IOS software can offer feature sets that provide specific network solutions in modules that can be separately integrated into different platforms.

Development History

Understanding the development history of the Cisco IOS software helps to explain the underlying causes of the release models discussed in Chapter 2, "An Overview of the Evolution of Cisco IOS Release Models."

The evolution of the release models from 9.x to 12.OT and beyond is more or less related to the architectural changes described in this section.

The Early System Architecture

As mentioned earlier in this chapter, Cisco IOS has evolved from a monolithic architecture to a more modular architecture. The early releases of IOS (prior to version 9.21) formed a singular, monolithic system. The software was arranged as a set of procedures, enabling any procedure(s) to call any other. This monolithic structure did not enforce data hiding; most of its operating code had structural and operational interdependencies.

This architecture obviously did not scale very well and made the introduction of new features and platforms a more drastic process...

Read More Show Less

Table of Contents

I. WHAT EVERY NETWORK ADMINISTER SHOULD KNOW.

1. Evolution of the Cisco IOS System Architecture.
Cisco IOS Definition. Move Toward Modularity. Division of Kernel and Network Services. Development History. The Early System Architecture. Evolution to Modular Architecture. Solid State Architecture—IOS Feature Sets as Network Solutions. Summary of Cisco IOS Engineering Efforts. Cisco IOS Release Models. Benefits of Cisco IOS Software. Summary.

2. An Overview of the Evolution of Cisco IOS Release Models.
The Cisco IOS Software Release Models. The Early Days of Cisco IOS Software: The Classic Release Model. Next Generation of Release Process (NGRP). Overview of the Current Cisco IOS Release Model: The Technology Release Process. The Highlights of the Technology Release Process. Early Deployment Releases During the Technology Release Process. Importance of Unifying the Releases.

3. Characteristics of Cisco IOS: Definitions, Naming Convention, Versioning, Numbering, and Feature Packaging.
The Influence of Cisco's Business Unit Structure. Categories of Cisco IOS Releases. Cisco IOS Main Releases. Early Deployment Releases. Cisco IOS Release Naming Conventions. Letter Definitions for Major ED Releases. Multiple Letter Definitions for STED and XED Releases. Cisco IOS Maintenance and Interim Version Numbering Conventions. Cisco IOS Software Binary Image Naming Convention. The Platform Identifiers. System Board Identifiers. IOS Feature SetContent. Cisco IOS Software Run-Time Memory Space. Cisco IOS Software Image File Type Extensions. How to Identify an IOS Release from a Running Router. Release Type Definitions and Examples. Example of Show Version Banner Output. Cisco IOS Software Product Numbering System. Cisco IOS Software Life Cycle Milestones. Cisco IOS Software and the Millennium Considerations. Source of Cisco Router's Calendar. Cisco Routers with Battery Backed-up Clock. Cisco Routers Without Battery Backed-up Clock. Cisco IOS and Application Software. Cisco Router Chip Sets. Some Important Dates for Verifying Y2K Compliance. Cisco Y2K Summary—The Bottom Line.

II. SPECIFICATION OF CISCO IOS RELEASES.

4. Early Cisco IOS Software Releases: The Classic Phase of the Cisco IOS Release Process.
The Singular Major Release Model. How Features and Hardware Platform Drivers Were Integrated into IOS during the Classic Phase. Cisco IOS Version 9.x. Cisco IOS Version 10.x. Cisco IOS Version 11.0. Cisco IOS Early Deployment Releases Based on 11.0. Cisco IOS Version 11.0NA. Cisco IOS Version 11.0BT. Cisco IOS Version 11.1. Early Deployment Releases Based on IOS 11.1. Cisco IOS Version 11.1AA. Cisco IOS Version 11.1CA. Cisco IOS Version 11.1CC. Cisco IOS Version 11.1CT. Cisco IOS Version 11.1IA.

5. Cisco IOS Releases During the NGRP Phase.
Necessity of a Another Cisco IOS Release Process. Description of the NGRP Release Process. Cisco IOS 11.2 Main Release. Cisco IOS 11.2P (Platform Specific Major Release). Cisco IOS 11.2F Release (Feature Specific Major Release). Cisco IOS Early Deployment Software Based on 11.2 Releases. Cisco IOS 11.2BC. Cisco IOS 11.2GS. Cisco IOS 11.2SA. Cisco IOS 11.2WA3. Cisco IOS 11.2(4)XA. Cisco IOS 11.2(9)XA.

6. Cisco IOS Releases 11.3/11.3T and Related STED: The Beginning of the Technology Release Model.
The Plan for Deploying 11.3 and 11.3T. The Transitional Nature of 11.3/11.3T. Cisco IOS 11.3 Main Release. Cisco IOS 11.3T Consolidated Technology Release. Specific Technology Early Deployment Release Based on 11.3 Major Releases. Cisco IOS 11.3AA. Cisco IOS 11.3DA. Cisco IOS 11.3DB. Cisco IOS 11.3HA. Cisco IOS 11.3MA. Cisco IOS 11.3NA. Cisco IOS 11.3(x)WA4(x). Cisco IOS Release 11.3(2)XA.

7. Current Cisco IOS Releases: Extension of the Technology Model.
Unification of the Releases, IOS Version 12.0/12.0T. Importance of IOS 12.0/12.0T Releases. Difference Between IOS 12.0 and 12.0T. Description of Current Release Process. Appearance of Multiple Short-Lived Early Deployment Releases. Summary Specifications of Cisco IOS Releases. Cisco IOS 12.0 Main Release. Cisco IOS Release 12.0T CTED. Specific Technology Early Deployment Releases Based on 12.0. Cisco IOS Release 12.0DA. Cisco IOS Release 12.0DB. Cisco IOS Release 12.0DC. Cisco IOS Release 12.1E. Cisco IOS Release 12.1/12.1T. Cisco IOS Release 12.0S. Cisco IOS Release 12.0SC. Cisco IOS Release 12.0ST. Cisco IOS Release 12.0(0.6)WA5. Cisco IOS Release 12.0W5(x). Cisco IOS Short Lived Early Deployment Releases Based on 12.0 (XED). Cisco IOS Release 12.0(1)XA. Cisco IOS Release 12.0(1)XB. Cisco IOS Release 12.0(2)XC. Cisco IOS Release 12.0(2)XD. Cisco IOS Release 12.0XE. Cisco IOS Release 12.0(2)XF. Cisco IOS Release 12.0(3)XG. Cisco IOS Release 12.0(2)XH. Cisco IOS Release 12.0(4)XH. Cisco IOS Release 12.0(4)XI. Cisco IOS Release 12.0(4)XJ. Cisco IOS Release 12.0(5)XK. Cisco IOS Release 12.0(7)XK. Cisco IOS Release 12.0(4)XL. Cisco IOS Release 12.0(4)XM. Cisco IOS Release 12.0(5)XN. Cisco IOS Release 12.0(5)XQ. Cisco IOS Release 12.0(5)XP. Cisco IOS Release 12.0(7)XR. Cisco IOS Release 12.0(5)XS. Cisco IOS 12.0(7)XV.

III. THE HARDWARE-SOFTWARE RELATIONSHIP.

8. Hardware Architectures and Cisco IOS Software.
Cisco Routers and Switches. Basic Router Functions. Basic Switching Function. The Software Components of a Typical Router. Boot ROM System (ROM Monitor). Identifying ROMMON. The Cisco IOS Boot Software (Boot Loader/rxboot). Identifying Cisco IOS Boot Software Images. The Rxboot. The Operating System (IOS). Summary of Router Boot Process. Cisco Router Architecture. Basic Router Architecture. The Central Processing Unit (CPU). The System or CPU Bus. Network Interfaces. The Memory Space. Overview of Hardware Memory Configuration. Cisco Low-End/Mid Range Routers Configuration. Typical Low to Mid Range Router Logical Memory Representation. Cisco High-End Routers Memory Configuration. How Cisco IOS Uses High-End Router Resources. Cisco 7500 Series Memory Allocated to IOS. How IOS Software Views Memory Space.

IV. APPENDIXES.

Appendix A: Cisco IOS Image Name Reference.
Cisco IOS Image Platforms (PPPP) and Board (BBB) Code Definitions. Cisco IOS Image Feature Identifiers Definition (FFFF). Available Cisco IOS Images. Images for Routers and Boards.

Appendix B: Cisco IOS Software Product Numbering System.
Cisco IOS Product Numbers and Feature Set Definition.

Appendix C: New Features of Cisco IOS 12.0T.
New Features of 12.0(1)T. New Features of 12.0(2)T. New Features of 12.0(3)T. New Features of 12.0(4)T. New Features of 12.0(5)T. New Features of 12.0(6)T. New Features of 12.0(7)T.

Glossary.
Index.
Read More Show Less

Customer Reviews

Be the first to write a review
( 0 )
Rating Distribution

5 Star

(0)

4 Star

(0)

3 Star

(0)

2 Star

(0)

1 Star

(0)

Your Rating:

Your Name: Create a Pen Name or

Barnes & Noble.com Review Rules

Our reader reviews allow you to share your comments on titles you liked, or didn't, with others. By submitting an online review, you are representing to Barnes & Noble.com that all information contained in your review is original and accurate in all respects, and that the submission of such content by you and the posting of such content by Barnes & Noble.com does not and will not violate the rights of any third party. Please follow the rules below to help ensure that your review can be posted.

Reviews by Our Customers Under the Age of 13

We highly value and respect everyone's opinion concerning the titles we offer. However, we cannot allow persons under the age of 13 to have accounts at BN.com or to post customer reviews. Please see our Terms of Use for more details.

What to exclude from your review:

Please do not write about reviews, commentary, or information posted on the product page. If you see any errors in the information on the product page, please send us an email.

Reviews should not contain any of the following:

  • - HTML tags, profanity, obscenities, vulgarities, or comments that defame anyone
  • - Time-sensitive information such as tour dates, signings, lectures, etc.
  • - Single-word reviews. Other people will read your review to discover why you liked or didn't like the title. Be descriptive.
  • - Comments focusing on the author or that may ruin the ending for others
  • - Phone numbers, addresses, URLs
  • - Pricing and availability information or alternative ordering information
  • - Advertisements or commercial solicitation

Reminder:

  • - By submitting a review, you grant to Barnes & Noble.com and its sublicensees the royalty-free, perpetual, irrevocable right and license to use the review in accordance with the Barnes & Noble.com Terms of Use.
  • - Barnes & Noble.com reserves the right not to post any review -- particularly those that do not follow the terms and conditions of these Rules. Barnes & Noble.com also reserves the right to remove any review at any time without notice.
  • - See Terms of Use for other conditions and disclaimers.
Search for Products You'd Like to Recommend

Recommend other products that relate to your review. Just search for them below and share!

Create a Pen Name

Your Pen Name is your unique identity on BN.com. It will appear on the reviews you write and other website activities. Your Pen Name cannot be edited, changed or deleted once submitted.

 
Your Pen Name can be any combination of alphanumeric characters (plus - and _), and must be at least two characters long.

Continue Anonymously

    If you find inappropriate content, please report it to Barnes & Noble
    Why is this product inappropriate?
    Comments (optional)