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. Expect scripting for network engineers cisco paul gerard. Mohammed watheq assistant professor ainshams university date. The tcl shell can be used to run cisco ios cli exec commands within a tcl script. You can issue the command xtclsh scriptname in your dos command window or nix shell and avoid the overhead of a graphical interface completely. Tcl script using the show interfaces command example. Download tcl scripting for cisco ios pdf ebook with isbn 10 1587059452, isbn 9781587059452 in english with 310 pages. 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 short tutorial will concentrate on the most basic concepts to get you started as quickly as possible. Once created, the task is sent to an available agent on finesse. The cisco ios tcl shell was designed to allow customers to run tcl commands directly from the cisco ios cli prompt. It was influenced by, and bears some similarities to, lisp.
An introduction to tcl scripting for cisco ios devices. 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. 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.
Tcl scripting for cisco ios pages 51 100 text version. The command to output a string in tcl is the puts command. Once you can print out a string, youre well on your way to using tcl for fun and profit. Admin posted on january, 2015 posted in tcl scripting. Mohammed watheq assistant professor ainshams university. The initialization script runs when the tcl shell is entered and saves manual sourcing of the individual scripts. Tcl scripting to automate configuration tftp backups re. The source code is compiled into bytecode, which is later interpreted by the tcl interpreter.
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. It is often used for prototyping and embedded systems, but it is quite capable enough to be used for fullscale applications. Tcl tool command language is a scripting language developed for scientific and engineering applications. The tcl stands for tool command language, where the source code of a. 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. For the latest caveats and feature information, see bug search tool and the release notes for. A tcl identifier is a name used to identify a variable, function, or any other userdefined item. Buy tcl scripting for cisco ios networking technology book online at best prices in india on. All video and text tutorials are free which is a wrapper around tcl, cisco ios scripting with tcl configuration guide, cisco ios release 12. Tcl can be used both as an embeddable scripting language and as a general programming language. The goal of this tutorial is to get you started with the tcl programming language. Once you have a working baseline script, such as the one i am providing below, its fast and easy to modify it for use.
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. 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. Cisco live 20 and how to place a tcl script on your. Tcl, or tool command language and pronounced tickle, is a dynamicallytyped scripting language originally invented in the late 1980s. It describes the basic mechanisms used by the tcl interpreter.
The same programming structures and syntax exist, but with additional features built in. It is implemented in the command interpreter program wish along with the tk tool kit. Within the gui there is a tcl command window, in which you can source i. A predefined tcl script can be created outside of cisco ios software, transferred to flash or disk memory, and run within cisco ios software. 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. Recently, i had an issue with cisco isr routers that connect to carrier equipment. Something you should remember is that you need to type tclquit to exit tclsh scripting. Buy tcl scripting for cisco ios networking technology. However, this does allow us to explore another way of controlling applications. Cisco ios scripting with tcl configuration guide, cisco. If the programmer has already learned tcl, then migrating to expect is a relatively easy transition. Cisco ios scripting with tcl cisco global home page. If you are a networking person, i highly recommend attending this annual event. The cisco ios scripting with tcl feature provides the ability to run tool command language tcl version 8.
Pronounced as tickle, tcl is a powerful but easy way to learn. Pdf tcl scripting for cisco ios networking technology. Tcl scripting for cisco ios pages 151 200 text version. The traditional starting place for a tutorial is the classic hello, world program. It is a scripting language that aims at providing the ability for applications to communicate with each other. Cisco ios scripting with tcl configuration guide, cisco ios xe. 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. For a stepbystep tutorial that shows how to use tcl in the vivado tool, see the vivado design suite tutorial. Whenever a task is created on social miner via rest api, i can successfully query its status via xmpp or rest. 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. These are not tcl commands, but we can use tcl to construct this file. Example tcl script using the show interfaces command 16. Tcl commands can be executed from the tcl configuration mode using the cisco ios cli. This video tutorial is on the tool command language tcl shell and how you can use the tcl shell to automate your common everyday.
An introduction to tcl scripting for cisco ios devices how. Cisco ios scripting with tcl configuration guide, cisco ios release 12. 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. The language is commonly used for rapid prototyping, scripted applications, guis, and testing. The best way to meet this challenge is to automate mundane or repetitive tasks wherever. About the tutorial tcl is a general purpose multiparadigm system programming language. Scripting tools within ciscos ios can help resolve these issues predictably with minimal interruption. Tcl is a general purpose multiparadigm system programming language. Tcl configuration mode is accessed from privileged exec mode. Tcl is a stringbased, interpreted command language. Tcl is the defacto standard embedded command language for electronic design automation eda and computeraided design cad applications.
It is divided into brief sections covering different aspects of the language. Cisco ios scripting with tcl cisco 871 example 05 mar 2012. The tutorial is intended as a companion to the tcl manual pages which provide a reference for all tcl commands. Get to know ciscos tool command language tcl techrepublic. 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. In todays post i will briefly introduce with a simple example how tcl scripting language can be used with the cisco ios. It can also be used as a portable c library, even in cases where no scripting capability is needed, as it. Tcl pronounced tickle or as an initialism is a highlevel, generalpurpose, interpreted, dynamic programming language. All the eda tool flows from synopsys, cadence and mentor graphics use tcl as the primary scripting interface for their flows. Its simplicity in syntax and common sensical approach to semantics makes this an easy language to learn and become proficient in. Our carrier hard codes ethernet ports to 100full and will not support auto negotiation. The authors first teach basic tcl commands and concepts for capturing and manipulating data and for querying or controlling cisco equipment. 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. A single unit of text after the puts command will be printed to the standard output device.
Networking cloud computing archives free pdf download. Cisco live 20 and how to place a tcl script on your cisco. There is large support in the industry for using expect for many inhouse administration tasks. Tcl casts everything into the mold of a command, even programming constructs like variable assignment and procedure definition. Tcl supports multiple programming paradigms, including object. Because the command is not understood, it is passed to the. Familiarity with tcl programming and cisco ios commands is required. It was designed with the goal of being very simple but powerful. Cisco ios scripting with tcl cisco 871 example remote. Sep 23, 2012 tcl tool command language is a scripting language developed for scientific and engineering applications. Because the command is not understood, it is passed to the normal ios command handler, which provides the results. 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.
Authors take a step by step approach, providing a reference to the tcl. 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. Your software release may not support all the features documented in this module. How to use tcl to script commands on cisco isr routers. Using the tcl shell to run cli commands allows customers. I just got back from orlando and attending cisco live 20. Welch, ken jones, jeffrey hobbs, practical programming in tcl and tk 4th edition. In 1997 he was awarded the acm software system award for tcl. If you have no idea what tcl is, have never used tcl. The tool command language tcl is the scripting language integrated in the vivado. Tcl as a single command language in all eda tool flows ensures that a designer.
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. Configuring tcl scripting in aos adtran support community. Its rather intuitive to understand at the basic level. The reason i use it is because i can deploy on windows or linux and use comm ports for. 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. Jun 18, 2015 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. Cisco ios scripting with tcl command reference cli. Tcl script using the show interfaces command example 11.
December29,20 onthe28thofapril2012thecontentsoftheenglishaswellasgermanwikibooksandwikipedia projectswerelicensedundercreativecommonsattributionsharealike3. 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. Expect script tutorial pdfexpect script tutorial pdf expect script tutorial pdf expect script tutorial for beginners a tutorial on tcl. Tcl was created by john ousterhout as a reusable scripting language for circuit design tools that he authored. Impact has the ability to run a script file that consists of a series of commands. In this part of the tcl tutorial, we will introduce the tcl programming language.
Cisco ios scripting with tcl configuration guide, cisco ios. This chapter describes the basic syntax rules for the tcl scripting language. Using the tcl shell to run cli commands allows customers to. An introduction to tcl scripting for cisco ios devices how to.
Intended for scripting, rapid prototyping, embedding into applications, creation of guis tcltk. The tutorial covers the core of the tcl language, namely variables, lists, arrays, control structures, and other core features. Depending on what system you are on, you can always look up the reference documentation for commands that you are curious about. Tcl fundamentals 1 this chapter describes the basic syntax rules for the tcl scripting language. It is also possible to create a tcl script and precompile the code before running it under cisco ios software. On the other hand, tk is a cross platform widget toolkit used for building gui in many languages. In my opinion, the best package help included is the one provided by activetcl.