Programming and Automating Cisco Networks

A guide to network programmability and automation in the data center, campus, and WAN

; Jason Gooley



Improve operations and agility in any data center, campus, LAN, or WAN




Today, the best way to stay in control of your network is to address devices programmatically and automate network interactions. Les mer
Vår pris
751,-

(Paperback) Fri frakt!
Leveringstid: Sendes innen 21 dager

Paperback
Legg i
Paperback
Legg i
Vår pris: 751,-

(Paperback) Fri frakt!
Leveringstid: Sendes innen 21 dager

Om boka



Improve operations and agility in any data center, campus, LAN, or WAN




Today, the best way to stay in control of your network is to address devices programmatically and automate network interactions. In this book, Cisco experts Ryan Tischer and Jason Gooley show you how to do just that. You'll learn how to use programmability and automation to solve business problems, reduce costs, promote agility and innovation, handle accelerating complexity, and add value in any data center, campus, LAN, or WAN.




The authors show you how to create production solutions that run on or interact with Nexus NX-OS-based switches, Cisco ACI, Campus, and WAN technologies.You'll learn how to use advanced Cisco tools together with industry-standard languages and platforms, including Python, JSON, and Linux. The authors demonstrate how to support dynamic application environments, tighten links between apps and infrastructure, and make DevOps work better.




This book will be an indispensable resource for network and cloud designers, architects, DevOps engineers, security specialists, and every professional who wants to build or operate high-efficiency networks.






Drive more value through programma bility and automation, freeing resources for high-value innovation
Move beyond error-prone, box-by-box network management
Bridge management gaps arising from current operational models
Write NX-OS software to run on, access, or extend your Nexus switch
Master Cisco's powerful on-box automation and operation tools
Manage complex WANs with NetConf/Yang, ConfD, and Cisco SDN Controller
Interact with and enhance Cisco Application Centric Infrastructure (ACI)
Build self-service catalogs to accelerate application delivery
Find resources for deepening your expertise in network automation

Fakta

Innholdsfortegnelse



Introduction xviii




Section I Getting Started with Network Programmability




Chapter 1 Introduction: Why Network Programmability 1




What Is Network Programmability 3




Network Programmability Benefits 4




Cloud, SDN, and Network Programmability 6




SDN 8




Is Programmability a New Idea? 9




Network Automation 10




Summary 11




Chapter 2 Foundational Skills 13




Introduction to Software Development 13




Common Constructs-Variables, Flow Control, Functions, and Objects 15




A Basic Introduction to Python 20




APIs and SDKs 37




Web Technologies 37




Web Technologies-Data Formatting 38




Google Postman 40




Basic Introduction to Version Control, Git, and GitHub 45




Git-Add a File 47




Creating and Editing Source Code 49




Getting Started with PyCharm 50




Introduction to Linux 55




Working in Linux 56




Using Systemd 61




Summary 66




Section II Cisco Programmable Data Center




Chapter 3 Next-Generation Cisco Data Center Networking 67




Cisco Application-Centric Infrastructure (ACI) 70




Nexus Data Broker 74




Use Case-Nexus Data Broker 75




Evolution of Data Center Network Architecture 76




Cisco Data Center Network Controllers 80




Nexus Fabric Manager 80




Virtual Topology System (VTS) 81




Cisco ACI 81




Summary 82




Chapter 4 On-Box Programmability and Automation with Cisco Nexus NX-OS 83




Open NX-OS Automation-Bootstrap and Provisioning 83




Cisco POAP 83




Cisco Ignite 87




NX-OS iPXE 88




Bash 88




Bash Scripting 89




Bash Variables, Conditions, and Loops 89




Bash Arithmetic 90




Bash Conditions and Flow Control 91




Bash Redirection and Pipes 94




Working with Text in Bash 96




Awk 98




Bash on Nexus 9000 99




ifconfig 101




Tcpdump 101




ethtool 103




Run a Bash Script at Startup 103




Linux Containers (LXC) 106




Network Access in Guestshell 109




EEM Variables 113




On-box Python Scripting 113




On-Box Python-Use Cases and Examples 118




EEM Neighbor Discovery 121




Summary 124




Chapter 5 Off-Box Programmability and Automation with Cisco Nexus NX-OS 125




Nexus NX-API 125




NX-API Transport 125




NX-API Message Format 126




NX-API Security 126




NX-API Sandbox 127




Summary 158




Resources 158




Chapter 6 Network Programmability with Cisco ACI 159




Cisco ACI Automation 160




ACI Policy Instantiation 161




A Bit More Python 162




Python Exceptions Handling 166




ACI Fundamentals 169




ACI Management Information Model 169




ACI Programmability 174




Cobra SDK 198




Summary 213




Section III Cisco Programmable Campus and WAN




Chapter 7 On-Box Automation and Operations Tools 215




Automated Port Profiling 216




AutoSmart Ports 216




Enabling AutoSmart Ports on a Cisco Catalyst Switch 217




AutoConf 220




Enabling AutoConf on a Cisco Catalyst Switch 222




Modifying a Built-in Template 224




Auto Security 227




Enabling Auto Security on a Cisco Catalyst Switch 228




Quality of Service for Campus Architectures 230




AutoQoS on Campus LAN Devices 230




Enabling AutoQoS on a Cisco Catalyst Switch 231




AutoQoS on Campus WAN Devices 233




Enabling AutoQoS on a Cisco ISR Router 234




Automating Management and Monitoring Tasks 236




Smart Call Home 236




Enabling Smart Call Home on an Cisco Catalyst Switch 237




Tcl Shell 243




Embedded Event Manager (EEM) 246




Summary 253




Chapter 8 Network Automation Tools for Campus Environments 255




Data Models and Supporting Protocols 256




YANG Data Models 256




NETCONF 258




ConfD 259




Application Policy Infrastructure Controller Enterprise Module (APIC-EM) 263




APIC-EM Architecture 263




APIC-EM Applications 264




Intelligent WAN (IWAN) Application 264




Plug and Play (PnP) Application 269




Path Trace Application 276




Additional APIC-EM Features 279




Topology 279




Device Inventory 281




Easy Quality of Service (Easy QoS) 283




Dynamic QoS 285




Policy Application 286




APIC-EM Programmability Examples Using Postman 288




Ticket API 288




Host API 291




Network Device API 292




User API 294




Available APIC-EM APIs 296




APIC-EM Programmability Examples Using Python 297




Ticket API 297




Host API 299




Summary 302




Chapter 9 Piecing It All Together 303




9781587144653, TOC, 8/1/2016

Om forfatteren

Ryan Tischer, CCIE No. 11459 is a Technical Solution Architect at Cisco where he focuses on SDN, Cloud, and network programmability. He has worked in IT for 20 years, specifically focused on design, deployment, and operations of networking technologies. Ryan holds a BA in Information Technology from the University of Massachusetts, Lowell and a MS in Network Engineering from Depaul University. Ryan lives with his wife and children in the Milwaukee, WI area. Ryan blogs at http://Policyetc.com.



Jason Gooley, CCIE No. 38759 (R&S & SP), is a very enthusiastic engineer that is passionate about helping others in the industry succeed. Jason has more than 20 years of experience in the Information Technology and Telecommunications industry. Jason currently works at Cisco as a Strategic Systems Engineer where he specializes in SD-WAN, campus, and data center network design. In addition, Jason works with Learning@Cisco on certification development, mentoring, and training. Jason is also a Program Committee member and organizer for the Chicago Network Operators Group (CHINOG). Jason lives in Illinois with his wife Jamie and their daughter Kaleigh.