For campus networks, Cisco recommends a hierarchical network design that distributes networking
function at each layer through a layered organization. The hierarchical model enables the design of a
modular topology using “building blocks” that are scalable and allow the network to meet evolving
The hierarchical model is based on a modular design, which is easy to scale, understand, and
troubleshoot because it follows a deterministic traffic pattern. The principle advantages of the
hierarchical model are:...
This document is intended for network professionals and others participating in the design and
deployment of enterprise location-aware wireless LANs. Specifically, this information targets those
individuals who plan to integrate the following asset tracking product offerings into a Cisco Unified
Wireless Network (Cisco UWN):
• PanGo Networks PanOS location management platform
• PanGo Networks PanGo Locator asset tracking applications
This book is not designed to be a general networking topics book, although it can be used for that purpose.
This book is intended to tremendously increase your chances of passing the CCNA exam. Although other
objectives can be achieved from using this book, the book is written with one goal in mind: to help you pass
This book is designed to provide information about the Cisco CCNP Switching Exam #640-504. Every effort has been
made to make this book as complete and as accurate as possible, but no warranty or ﬁtness is implied.
The information is provided on an “as is” basis. The author, Cisco Press, and Cisco Systems, Inc. shall have neither lia-
bility nor responsibility to any person or entity with respect to any loss or damages arising from the information con-
tained in this book or from the use of the discs or programs that may accompany it.
We have all heard the saying "It’s what’s inside that counts" at some point in our lives. In the world of
networking Cisco’s Internetwork Operating Systems (IOS) has taken that saying to heart. The very
core of Cisco Systems phenomenal success is the breadth of services provided by the Cisco IOS
No two networks are exactly alike. There are connectivity requirements that differ between healthcare
and manufacturing, entertainment and shipping, finance and telecommunications. Each of which has
different security issues.
Cisco certification can also improve your understanding of the internet-
working of more than just Cisco products: You will develop a complete
understanding of networking and how different network topologies work
together to form a network. This is beneficial to every networking job and is
the reason Cisco certification is in such high demand, even at companies with
few Cisco devices.
Welcome to the exciting world of Cisco certification! You have picked up this book because
you want something better; namely, a better job with more satisfaction. Rest assured that you
have made a good decision. Cisco certification can help you get your first networking job, or
more money and a promotion if you are already in the field.
Cisco certification can also improve your understanding of the internetworking of more
than just Cisco products: You will develop a complete understanding of networking and how
different network topologies work together to form a network.
Internetworking---the communication between two or more networks---encompasses every aspect of
connecting computers together. Internetworks have grown to support vastly disparate end-system
communication requirements. An internetwork requires many protocols and features to permit scalability
and manageability without constant manual intervention. Large internetworks can consist of the
following three distinct components:
Use the following table to find the installation and configuration steps that are
required for your implementation of the Cisco ASA 5500 series adaptive security
The adaptive security appliance implementations included in this document are as
The Cisco ASA 5550 adaptive security appliance is designed to deliver maximum
throughput when configured according to the guidelines described in this chapter.
The Cisco® Networking Academy® course on CCNA® Security provides a next step for students who
want to expand their CCNA-level skill set to prepare for a career in network security. The CCNA
Security course also prepares students for the Implementing Cisco IOS® Network Security (IINS)
certification exam (640-553), which leads to the CCNA Security certification.
The CCNA Security Lab Manual provides you with all 11 labs from the course designed as hands-on
practice to master the knowledge and skills needed to prepare for entry-level security specialist careers....
This software configuration guide provides instructions for using the Cisco command-line interface (CLI) to configure features of the following Cisco 1800 series integrated services fixed-configuration routers: •Cisco 1801, Cisco 1802, and Cisco 1803 DSL Access Routers •Cisco 1811 and Cisco 1812 Ethernet Access Routers
This preface describes the intended audience, the organization of this guide, and the text and command conventions used throughout the guide. The preface includes the following topics:...
This document provides design considerations and guidelines for implementing Cisco Quality of Service
within an enterprise environment.
This document is the second major update to the design guidelines and information presented in the
Cisco AVVID Network Infrastructure Enterprise Quality of Service Design Solutions Reference Network
Design (August, 2002).
This document assumes that you are already familiar with Quality of Service terms and concepts. If you
want to review any of those terms and concepts, refer to Cisco Quality of Service documentation at:...
Establishing a network performance baseline requires collecting key performance data from the ports and devices that are essential to network operation.1 Gather symptoms - Troubleshooting begins with the process of gathering and documenting symptoms from the network, end systems, and users.
Stage 2 Isolate the problem - The problem is not truly isolated until a single problem, or a set of related problems, is identified.
This document provides system-level best practices and design guidance for the Cisco Unified Contact
Center Express (Unified CCX), Release 6.0. With proper planning, design, and implementation, Unified
CCX provides a reliable and flexible voice processing and contact center solution for the enterprise. This design guide is intended for the system architects, designers, engineers, and Cisco channel partners who want to apply best design practices for Unified CCX.