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Stuart Fordham

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Herausgeber: Packt Publishing
Kategorie: Fachliteratur
Sprache: Englisch

Beschreibung

Cisco Application Centric Infrastructure (ACI) is a tough architecture that automates IT tasks and accelerates data-center application deployments.
This book focuses on practical recipes to help you quickly build, manage, and customize hybrid environment for your organization using Cisco ACI. You will begin by understanding the Cisco ACI architecture and its major components. You will then configure Cisco ACI policies and tenants. Next you will connect to hypervisors and other third-party devices. Moving on, you will configure routing to external networks and within ACI tenants and also learn to secure ACI through RBAC. Furthermore, you will understand how to set up quality of service and network programming with REST, XML, Python and so on. Finally you will learn to monitor and troubleshoot ACI in the event of any issues that arise.

By the end of the book, you will gain have mastered automating your IT tasks and accelerating the deployment of your applications.

Details

Das E-Book können Sie in Legimi-Apps oder einer beliebigen App lesen, die das folgende Format unterstützen:

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Seitenzahl: 204

Veröffentlichungsjahr: 2017

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Title Page

Cisco ACI Cookbook

Accelerating application deployment and IT processes

Stuart Fordham

BIRMINGHAM - MUMBAI

Copyright

Cisco ACI Cookbook

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

First published: May 2017

Production reference: 1190517

Published by Packt Publishing Ltd.

Livery Place

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Birmingham

B3 2PB, UK.

ISBN 978-1-78712-921-4

www.packtpub.com

Credits

Author

Stuart Fordham

Copy Editor

Madhusudan Uchil

Reviewers

Muhammad Rafi

Vijay AR

Project Coordinator

Virginia Dias

Commissioning Editor

Pratik Shah

Proofreader

Safis Editing

Acquisition Editor

Meeta Rajani

Indexer

Mariammal Chettiyar

Content Development Editor

Sweeny Dias

Graphics

Kirk D'Penha

Technical Editor

Mohit Hassija

Production Coordinator

Melwyn Dsa

About the Author

Stuart Fordham is a networking engineer who focuses on security and DevOps. He is CCIE #49337 (Routing and Switching), along with other qualifications such as CCDP, CEH, RHCSA, and MCSE. He has also been a Cisco Champion for 2017 and has authored a series of networking books. He is the network manager for a leading global Communication-as-a-Service company and has worked for hedge funds, the government, and the National Health Service.

First and foremost, I would like to thank my lovely wife. Without her encouragement and inspirational guidance (like saying “You’d be an idiot if you didn’t write it”), I would have never written this book.Secondly, I would like to thank Michael Yandulov and Louie Liang for helping me out while writing this book. I would also like to thank the two people who helped them help me.A big thanks goes to my good buddies Muhammad Rafi and Vijay AR for their invaluable help in editing this book. Finally, I’d like to thank the team at Packt Publishing for giving me the opportunity to write this book and their support while doing so.

About the Reviewers

Muhammad Rafi, CCIE #49281, is an IP design consultant with one of the UK’s largest mobile network operators. He has been in the field of IT and networking for more than 7 years and has worked on several small-to-medium sized network design deployment projects. His entire educational background is related to IT; he holds a BS in electronics engineering from SSUET Karachi and a master's in telecommunication and computer network engineering from London South Bank University, London. Apart from holding a BS, MS, and CCIE, he also possesses certifications from VMware, Microsoft, Citrix, and several others. As technology is changing rapidly, he is never going to stop learning and having bigger dreams, as everyone else does. You can follow him on LinkedIn.

I would like to first thank the Almighty God for all his blessings upon me and then my super mom and dad, because they really worked hard on me in the early days of my education and made me the person I am today. Also, I also want to give special thank to my beautiful wife and my two little boys for their sacrifices and moral support whilst working and building up my career in IT. Last but not least, all of my teachers, colleagues, and friends, who really helped me with their support during the whole journey and still do.

Vijay AR is a cloud architect at OneCloud Consulting with over 10 years of expertise in designing and building solutions for complex enterprise projects across infrastructure, virtualization, and cloud computing. He is also a certified trainer for VMware, Cisco, Microsoft, and NetApp, responsible for training and consulting for both partners and internal teams. He specializes in converged-infrastructure, cloud-computing, and data-center solutions.

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Preface

What this book covers

What you need for this book

Who this book is for

Sections

Getting ready

How to do it…

How it works…

There's more…

Preface

Welcome to the Cisco ACI cookbook! Through a series of easy-to-follow recipes, you will learn how ACI can solve a number of data-center challenges and how to create tenants, implement policies, integrate virtualization technologies, perform routing, secure your ACI Fabric, and troubleshoot and monitor it.

What this book covers

Chapter 1, Understanding Components and the ACI Fabric, covers the issues that ACI can overcome and the building blocks of the ACI fabric and walks you through the interface of the controller.

Chapter 2, Configuring Policies and Tenants, begins our journey of creating an environment for our tenants and applying policies to them.

Chapter 3, Hypervisor Integration (and Other Third Parties), builds on the foundation of our fabric and extends it, using VMWare and third-party devices.

Chapter 4, Routing in ACI, shows how we will unleash our ACI fabric to the rest of the network using IPv4, IPv6, and multicast.

Chapter 5, ACI Security, secures our fabric by implementing centralized role-based security.

Chapter 6, Implementing Quality of Service in ACI, walks us through prioritizing our traffic through the fabric.

Chapter 7, Network Programmability with ACI, explores the ways in which we can control our fabric through APIs.

Chapter 8, Monitoring ACI, shows us how to stay on top of any issues as they arise.

Chapter 9, Troubleshooting ACI, walks us through a bottom-up troubleshooting approach.

Chapter 10, An End-to-End Example Using the NX-OS CLI, brings everything we have covered into one complete scenario.

What you need for this book

All you need is a computer with Internet access, some time, and some coffee.

The majority of the recipes in this book can be performed using the free Cisco Devnet sandboxes, which are browser based.

Who this book is for

This book is meant for network engineers looking to learn about ACI.

A basic understanding of routing protocols, SNMP, and NetFlow is recommended.

Sections

In this book, you will find several headings that appear frequently (Getting ready, How to do it, How it works, There's more, and See also).

To give clear instructions on how to complete a recipe, we use these sections as follows:

Getting ready

This section tells you what to expect in the recipe, and describes how to set up any software or any preliminary settings required for the recipe.

How to do it…

This section contains the steps required to follow the recipe.

How it works…

This section usually consists of a detailed explanation of what happened in the previous section.

There's more…

This section consists of additional information about the recipe in order to make the reader more knowledgeable about the recipe.

Conventions

In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Create a new user for JIRA in the database and grant the user access to the jiradb database we just created using the following command:"

A block of code is set as follows:

<Contextpath="/jira"docBase="${catalina.home}/atlassian- jira" reloadable="false" useHttpOnly="true">

Any command-line input or output is written as follows:

mysql -u root -p

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "Select System info from the Administration panel."

Warnings or important notes appear in a box like this.

Tips and tricks appear like this.

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To send us general feedback, simply e-mail [email protected], and mention the book's title in the subject of your message.

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Questions

If you have a problem with any aspect of this book, you can contact us at [email protected], and we will do our best to address the problem.

Understanding Components and the ACI Fabric

In this chapter, we will cover the following:

Understanding ACI and the APIC

An overview of the ACI fabric

Converting Cisco Nexus from NX-OS mode to ACI mode

ACI fabric overlay

An introduction to the GUI

Introduction

Cisco's Application Centric Infrastructure (ACI) is a big evolutionary step in data center networking, not because it adds programmability to the network--this has been a rising trend over the last few years--but because of the increased compatibility between vendors. This is where the real benefits are.

We can see the start of this evolutionary step with Cisco's FlexPod (an amalgam of Cisco UCS, VMWare hypervisors, and NetApp storage). Here we see properly validated designs that span more than one vendor. This in itself was a big step; after all, it makes sense for a vendor to try and encourage the end user to purchase their equipment instead of their competitors'. This is done for two reasons: compatibility between devices and the vendor's financial success.

So, what of networks where one vendor can supply all of the equipment, from the networking to the storage and compute elements? It is actually quite rare to find an environment comprising one single vendor in the real world; most networks (and I am including virtualization platforms and storage within this term) have equipment from more than one vendor, because when you are looking for the best performance, you go with the big names (VMWare for virtualization, NetApp for storage, and so on) because they have longevity in the industry and the knowledge and support options that are required. The network becomes heterogeneous, because it needs to be in order to fulfill user, application, and business demands.

The downside to this is that we lose some degree of compatibility. There are industry-standard protocols that provide some level of compatibility back, such as SNMP (Simple Network Management Protocol), Syslog, and LLDP (Link Layer Discovery Protocol), that can facilitate alerting, logging, and communication between devices, but ACI takes this all one step further, taking the heterogeneous data center network and making it, well, homogenous. Through ACI, the data center can be configured rapidly as the application demands, and this includes physical and virtual network elements from multiple vendors. All of this can be performed through one GUI.

Before we dive in, let’s take a few moments to understand what ACI is all about, dispelling some of the myths along the way.

Myth: ACI is too expensive

ACI is not cheap to purchase; it is engineered for the data center, so it commands data center prices. Even the most basic of starter kits has a list price of $250,000. While a quarter of a million dollars is enough to get you started in the world of ACI, it is probably out of reach of most people. Even trying to sell ACI, as a "this could revolutionize our business" proposal, within most companies would be difficult. Despite the fact that most companies do not pay list price, ACI represents a huge risk, and for a number of reasons.