This short tutorial will concentrate on the most basic concepts to get you started as quickly as possible. The tcl shell can be used to run cisco ios cli exec commands within a tcl script. The tool command language tcl is the scripting language integrated in the vivado. Recently, i had an issue with cisco isr routers that connect to carrier equipment. Its simplicity in syntax and common sensical approach to semantics makes this an easy language to learn and become proficient in. It was designed with the goal of being very simple but powerful. This chapter describes the basic syntax rules for the tcl scripting language. The initialization script runs when the tcl shell is entered and saves manual sourcing of the individual scripts. About the tutorial tcl is a general purpose multiparadigm system programming language. Expect scripting for network engineers cisco paul gerard. Jun 09, 2010 a guide to building and modifying tcl scripts to automate network administration tasks streamline cisco network administration and save time with tcl scripting cisco networking professionals are under relentless pressure to accomplish more, faster, and with fewer resources. Dec 08, 2012 expect is a scripting program written in tcl that was built to automate tasks for other interactive programs, such as ciscos ios and nxos command line interfaces.
This video tutorial is on the tool command language tcl shell and how you can use the tcl shell to automate your common everyday. The tcl stands for tool command language, where the source code of a. Cisco ios scripting with tcl cisco 871 example remote. Cisco ios scripting with tcl configuration guide, cisco. It was influenced by, and bears some similarities to, lisp.
Tcl pronounced tickle or as an initialism is a highlevel, generalpurpose, interpreted, dynamic programming language. It describes the basic mechanisms used by the tcl interpreter. Pronounced as tickle, tcl is a powerful but easy way to learn. Configuring tcl scripting in aos adtran support community. Our carrier hard codes ethernet ports to 100full and will not support auto negotiation.
In 1997 he was awarded the acm software system award for tcl. Mohammed watheq assistant professor ainshams university. Once created, the task is sent to an available agent on finesse. Using the tcl shell to run cli commands allows customers. Tcl is the defacto standard embedded command language for electronic design automation eda and computeraided design cad applications. Expect script tutorial pdfexpect script tutorial pdf expect script tutorial pdf expect script tutorial for beginners a tutorial on tcl. The traditional starting place for a tutorial is the classic hello, world program.
For a stepbystep tutorial that shows how to use tcl in the vivado tool, see the vivado design suite tutorial. The command to output a string in tcl is the puts command. Tcl script using the show interfaces command example. Cisco live 20 and how to place a tcl script on your cisco. Its rather intuitive to understand at the basic level. Tcl scripting for cisco ios pdf youll learn easy techniques for creating, using, and modifying tcl scripts that run directly on cisco network devices from the cisco ios command line. Jun 06, 2019 tcl scripting for cisco ios networking technology pdf download is the networking cloud computing tutorial pdf published by cisco press, 2010, the author is arvind durai, john lautmann, raymond blair. December29,20 onthe28thofapril2012thecontentsoftheenglishaswellasgermanwikibooksandwikipedia projectswerelicensedundercreativecommonsattributionsharealike3. Tcl configuration mode is accessed from privileged exec mode. Cisco ios scripting with tcl configuration guide, cisco ios release 12. The source code is compiled into bytecode, which is later interpreted by the tcl interpreter. Error messages are provided, but you must check that the tcl script will run successfully because errors may cause the tcl shell to run in an infinite loop. Download tcl scripting for cisco ios pdf ebook with isbn 10 1587059452, isbn 9781587059452 in english with 310 pages. Buy tcl scripting for cisco ios networking technology book online at best prices in india on.
The tutorial covers the core of the tcl language, namely variables, lists, arrays, control structures, and other core features. It is often used for prototyping and embedded systems, but it is quite capable enough to be used for fullscale applications. Tcl can be used both as an embeddable scripting language and as a general programming language. Cisco ios scripting with tcl cisco 871 example 05 mar 2012. There is large support in the industry for using expect for many inhouse administration tasks. Tcl commands can be executed from the tcl configuration mode using the cisco ios cli. Cisco ios scripting with tcl configuration guide, cisco ios. The same programming structures and syntax exist, but with additional features built in. Cisco ios scripting with tcl cisco global home page. Hi all, im quite lost on this one i just cant get tcl to get going i have followedd the guides but the system will not load the tcl scripts. Tcl scripting for cisco ios networking technology pdf download is the networking cloud computing tutorial pdf published by cisco press, 2010, the author is arvind durai, john lautmann, raymond blair.
This video tutorial is on the tool command language tcl shell and how you can use the tcl shell to automate your common everyday tasks on cisco ios devices. Cisco ios scripting with tcl command reference cli. For the latest caveats and feature information, see bug search tool and the release notes for. It is a scripting language that aims at providing the ability for applications to communicate with each other. These are not tcl commands, but we can use tcl to construct this file.
Tcl supports multiple programming paradigms, including object. Welch, ken jones, jeffrey hobbs, practical programming in tcl and tk 4th edition. An introduction to tcl scripting for cisco ios devices how. It is implemented in the command interpreter program wish along with the tk tool kit. If the programmer has already learned tcl, then migrating to expect is a relatively easy transition.
Impact has the ability to run a script file that consists of a series of commands. Familiarity with tcl programming and cisco ios commands is required. Tcl scripting for cisco ios pages 51 100 text version. Lots of informative sessions, meeting some of the engineers who work for cisco, seeing 20,000 people all head and shoulders into cisco, booths with companies showing continue reading cisco live 20 and how to place a tcl script on. The tutorial is intended as a companion to the tcl manual pages which provide a reference for all tcl commands. If you are a networking person, i highly recommend attending this annual event. Admin posted on january, 2015 posted in tcl scripting. It is divided into brief sections covering different aspects of the language.
Expect is a scripting program written in tcl that was built to automate tasks for other interactive programs, such as ciscos ios and nxos command line interfaces. Tcl was created by john ousterhout as a reusable scripting language for circuit design tools that he authored. All video and text tutorials are free which is a wrapper around tcl, cisco ios scripting with tcl configuration guide, cisco ios release 12. You can issue the command xtclsh scriptname in your dos command window or nix shell and avoid the overhead of a graphical interface completely. Because the command is not understood, it is passed to the normal ios command handler, which provides the results. Your software release may not support all the features documented in this module. A guide to building and modifying tcl scripts to automate network administration tasks streamline cisco network administration and save time with tcl scripting cisco networking professionals are under relentless pressure to accomplish more, faster, and with fewer resources. An introduction to tcl scripting for cisco ios devices.
It is also possible to create a tcl script and precompile the code before running it under cisco ios software. How to use tcl to script commands on cisco isr routers. Cisco ios scripting with tcl configuration guide, cisco ios xe. Tcl scripting in cisco ios is a somewhat underdocumented topic have you noticed im trying to use diplomatic language, so i was excited when id spotted the tcl scripting for cisco ios. The goal of this tutorial is to get you started with the tcl programming language. Cisco live 20 and how to place a tcl script on your. A predefined tcl script can be created outside of cisco ios software, transferred to flash or disk memory, and run within cisco ios software. Tcl for classbased qos mib indexes classbased qos mib is a very complex data structure with numerous crossindexes, making it very hard to find the exact snmp variable that should be monitored with an eem applet for example, the bit. Sep 23, 2012 tcl tool command language is a scripting language developed for scientific and engineering applications. An introduction to tcl scripting for cisco ios devices how to. Buy tcl scripting for cisco ios networking technology. Apr 24, 2015 this video tutorial is on the tool command language tcl shell and how you can use the tcl shell to automate your common everyday tasks on cisco ios devices.
Pdf tcl scripting for cisco ios networking technology. Tcl casts everything into the mold of a command, even programming constructs like variable assignment and procedure definition. However, this does allow us to explore another way of controlling applications. Tcl fundamentals 1 this chapter describes the basic syntax rules for the tcl scripting language. Lots of informative sessions, meeting some of the engineers who work for cisco, seeing 20,000 people all head and shoulders into cisco, booths with companies showing continue reading cisco live 20 and how to. On the other hand, tk is a cross platform widget toolkit used for building gui. If you have no idea what tcl is, have never used tcl. A single unit of text after the puts command will be printed to the standard output device. All the eda tool flows from synopsys, cadence and mentor graphics use tcl as the primary scripting interface for their flows. It can also be used as a portable c library, even in cases where no scripting capability is needed, as it. Tcl is a general purpose multiparadigm system programming language. If you need it for a particular reason, start using it for that, read the first part of tcl and the tk toolkit osterhout, i find that i refer to that a lot.
Jul 20, 2010 tcl scripting in cisco ios is a somewhat underdocumented topic have you noticed im trying to use diplomatic language, so i was excited when id spotted the tcl scripting for cisco ios. On the other hand, tk is a cross platform widget toolkit used for building gui in many languages. Tcl is a stringbased, interpreted command language. Scripting tools within ciscos ios can help resolve these issues predictably with minimal interruption.
The reason i use it is because i can deploy on windows or linux and use comm ports for. A tcl identifier is a name used to identify a variable, function, or any other userdefined item. The cisco ios scripting with tcl feature provides the ability to run tool command language tcl version 8. Discovered during cisco ccnp course, tcl originally from tool command language is a scripting language created by john ousterhout and introduced from ios version 12. The cisco ios tcl shell was designed to allow customers to run tcl commands directly from the cisco ios cli prompt. Mohammed watheq assistant professor ainshams university date. The authors first teach basic tcl commands and concepts for capturing and manipulating data and for querying or controlling cisco equipment. Networking cloud computing archives free pdf download. Authors take a step by step approach, providing a reference to the tcl.
The best way to meet this challenge is to automate mundane or repetitive tasks wherever. Tcl scripting to automate configuration tftp backups re. Depending on what system you are on, you can always look up the reference documentation for commands that you are curious about. Something you should remember is that you need to type tclquit to exit tclsh scripting. Tcl scripting for cisco ios pages 151 200 text version. Once you can print out a string, youre well on your way to using tcl for fun and profit. The title tcl scripting for cisco ios might make you think youll be able to drill the guts out of your router and utilise ios functions unknown to most, but thats not the case.
In my opinion, the best package help included is the one provided by activetcl. The language is commonly used for rapid prototyping, scripted applications, guis, and testing. Whenever a task is created on social miner via rest api, i can successfully query its status via xmpp or rest. Get to know ciscos tool command language tcl techrepublic. Tcl as a single command language in all eda tool flows ensures that a designer. Tcl tool command language is a scripting language developed for scientific and engineering applications. I just got back from orlando and attending cisco live 20. Once you have a working baseline script, such as the one i am providing below, its fast and easy to modify it for use. Because the command is not understood, it is passed to the. Intended for scripting, rapid prototyping, embedding into applications, creation of guis tcltk. Tcl script using the show interfaces command example 11. Using the tcl shell to run cli commands allows customers to. Tcl, or tool command language and pronounced tickle, is a dynamicallytyped scripting language originally invented in the late 1980s. In this part of the tcl tutorial, we will introduce the tcl programming language.
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