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Contents: Cisco CCVP Series - Exam-Pack: 642-642 QOS

- Introduction to Quality of Service
- The Cisco MQC Building Blocks
- Classification and Marking (Part 1)
- Classification and Marking (Part 2)
- Congestion Management: Concepts and Design
- Congestion Management: Implementation
- Congestion Avoidance: WRED
- Link Efficiency Tools
- Implementing QoS on Catalyst Switches
- Traffic Policing
- Traffic Shaping
- "Proactive QOS" - Tapping the Features of SAA
- The Big Picture: QoS Design Strategies
- The Magic of AutoQoS

The Cisco Certified Internetwork Expert (CCIE) certification program has been available since the early ’90s. This long-standing certification has maintained a high degree of credibility and is recognized as a certification that lives up to the name “expert.” The CCIE certification process requires passing a computer based test and then a two-day hands-on lab. Recertification is required every two years to ensure that the individual has kept skills up-to-date.

Many problems were created by having one highly credible, but difficult to pass, certification. One problem was that there was no way to distinguish between someone who is almost ready to pass CCIE and a novice. The CCIE lab test is meant to prove that the individual not only has mastery of many topics, but the ability to learn and unravel situations quickly and under pressure. Many highly respected engineers have failed the CCIE lab on the first try. Employers wanting to reward employees based on certification, employers looking at prospective new employees, and network managers trying to choose between competing consulting companies have had too few Cisco-related certifications on which they could base their decisions. In an effort to solve these problems, Cisco Systems has created several new “Cisco Career Certifications.” Included in these new certifications is a series of certifications related to routing and switching.

Three cheers for the Nutshell format! There may be no better printed style for command-line environments, like the Internetwork Operating System (IOS) that runs on Cisco Systems routers. Cisco IOS in a Nutshell documents the most important bits of the frequently arcane IOS command line from aaa accounting to write, thereby providing a valuable resource to everyone who works with IOS. The reference section--which makes up about 60 percent of this book--summarizes each command (again, they're not all covered, but the ones that aren't are pretty obscure) with a statement of its scope (global, interface, line, or whatever), followed by generalized syntax summaries in the style of Unix man pages (these indicate the legal combinations of switches and parameters). Then, a detailed discussion of each switch and parameter clarifies what each is for. The whole reference section is alphabetical, with lettered dark boxes on the pages' outer edges that are easy to scan while flipping pages rapidly.

Prior to the reference section, the author explains how the IOS interface refers to and controls aspects of routers, such as lines and interfaces. He does a great job of it, too--you could do far worse than to read his explanations before going to work under IOS for the first time. The other great value of this early section is in the author's discussion of how to configure a new router by bringing interfaces, data-communication protocols (like TCP/IP), routing protocols (like Border Gateway Protocol, or BGP), and services like Domain Name Service (DNS) online. This book is a tremendous value for Cisco engineers. --David Wall

Topics covered: How to configure a Cisco Systems router with the Internetwork Operating System (IOS). The most popular commands are documented, and there's a tutorial section that familiarizes readers with the Cisco way of thinking about a router's work. The author uses IOS 12.x as his baseline, though users of older versions will find his work valuable.
 
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