Jinja2 cisco template. Templates are usually written as .

Jinja2 cisco template. Since we are talking about 500+ devices (ios-xe) I don‘t want to do it manually but thought of deploying it with a little jinja template via DNAC. Feb 3, 2020 · In my earlier blog post , I spent some time introducing the DNA Center templating engine. All of the lines do not need to be preceeded by the "- " as they would in a normal playbook call directly to the ios_config module. portType == 'Ethernet Port' %} () Is the any list of values that the key "interface. Feb 12, 2021 · Hi all , with Velocity-Templates there was the possibility to add interactive or exec commands to the template which works fine. Templates are usually written as . config) and cli_config modules can source a jinja2 template file, and push directly to a device. Sep 8, 2021 · cisco freeztp jinja switch template Revisiting Jinja2 Switch Templating Some time ago I wrote about my first venture into creating Jinja2 switch templates for FreeZTP. I tr Ansible Playbook Structure - Ansible Playbooks, Jinja2 Templates and Roles - This module provides an exploration of Ansible configuration, Jinja2 Templates, Ansible Roles, and using pyATS parsers with Ansible as part of the full day Ansible and Model-Driven Telemetry Workshop. Jinja2 templates offer a powerful way to achieve this by utilizing loops and other control structures. Aug 30, 2021 · I'm going to keep thinking about this and ask around, but my initial reaction is that we don't support built in variables during PnP. These samples include a wide ranging set of configurations which may be used in your labs to solve specific configuration requirements. Port Management Table This time, I . It seems that the ios_config module assumes the lines: command so it is not needed in the template output. I would like to add some automation to change any of the interface configurations that are not currently using the following descriptions, "AP, uplink", or configured for a specific vlan 15, because that is our wireless vlan. However especially for experiments in the development phase using templates looking more like dumps from the device can be attractive. Jan 21, 2025 · Hello. Jinja2 templates is widely used in Ansible playbook to access variables, configuration etc Aug 18, 2025 · Jinja2 is a templating engine used by Ansible to create dynamic content. In this section I have compiled a number of template examples built with Jinja2 Language. Mar 5, 2025 · A very fast and expressive template engine. Lets discuss first what these are and how they differ from each other, and then how they may be leveraged. I have just scratched the surface in this post, Jinja2 has many features that make it an excellent tool for creating device configuration templates. Loop in playbook configures multiple interfaces There are some disadvantages to work with templates, if you use commands like “no shutdown” to enable the interface. How Templates work with YAML / Jinja2 - How do you work with network configurations and templates in YAML, or Jinja2 templates? Explore the NAPALM framework with templates to merge configurations, repeatedly check configurations to bring them into compliance, and generally make your life easier when wrangling configurations across multilple network devices. Now customer wants to use Jinja2-Template, seems this MODE_ENABLE and INTERACTIVE is not possible there, is there another syntax to use it ?? Thx Hubert #MODE_ENABLE Aug 1, 2025 · Configuration templates can be used to render device configurations from context data. It covers various aspects of network automation, including Plug and Play (PnP) workflows, onboarding and day-N templates, and the use of Velocity and Jinja2 scripting languages. Rather than manually configuring each device in a unique way, you build the template once with variables for the differences. Second section defines static variables that I didn't want to store in the CSV; e. In the context of network configurations, having device configs generated dynamically from centralized Jinja2 templates embraces the DRY methodology. Then the template is passed data to render the final document. - GitHub - kebaldwi/CATC-TEMPLATES: This repository provides examples and What is Jinja2? Jinja2 is a powerful templating language that is python-based and widely used in web programming. Feb 23, 2023 · I can use Jinja2 and create a template that will interface with Python and automate filling in the IP address where ever it’s needed in the template. See full list on packetswitch. 1. You can use templating with the template module. Sep 23, 2024 · This site is aimed at helping with the adoption of Cisco Catalyst Center for Network Automation. Is this a supported feature? If not, how can we actually implement logic? I'm somewhat familiar with Ansible and trying to learn some nornir. If you want to just render a configuration locally on the control node, use the template module. cisco. The description should the assign via input, not via pre-defined values. This is a follow up to that post after having an opportunity to revisit the process for another project. Jinja2 Template is a common configuration template for many network devices, in which in its simplest form, data from network devices are replaced with variables. It includes: Template inheritance and inclusion. Static IP address configuration in playbook 2. cfg in the same directory as the playbook. Oct 17, 2019 · The variables in the default templates look like jinja2, however I was not able to get if-else statements running in the CLI template. Note: The interface is named Template Hub in version 2. Aug 29, 2021 · In case anyone comes looking for this in the future, System Variables are not supported on Day 0 templates. Now customer wants to use Jinja2-Template, seems this MODE_ENABLE and INTERACTIVE is not possible there, is there another syntax to use it ?? Thx Hubert #MODE_ENABLE Oct 12, 2025 · Learn how to use Jinja2 templates and filters in Ansible to automate dynamic configuration files. We’ll demo how to combine this with Jinja2 templates to automatically apply a Jinja2 template to a device. co. I would like to add some automation to change any of the interface configurations that are not currently using the following descriptions, "AP, uplink", or configured for a specific Cisco DNA Center Jinja2 Configuration Templates APIs Cisco Products & Services: Cisco DNA Center and Cisco IOS XE devices managed by Cisco DNA Center Tools & Frameworks: Python environment to run the script Usage This script will load the file with the name {file_info} The file includes the information required to deploy the template. j2. Jinja2 is a template-processing tool kit which allows you to create text-based templates with content value placeholders, which are then rendered into a result. Basic Cisco Template Config Example in Ansible. Aug 11, 2025 · I am attempting to configure a CLI template using Jinja2 and I am working with ChatGPT 5 but it is not helping much. In this first of a two-part tutorial, you'll learn how to create configuration templates in Cisco Catalyst Center, using the Jinja2 templating language. As before, I built this template with the intent of keeping the process as simple and unbreakable as possible for the Aug 18, 2017 · Jinja2 is a powerful tool that allows you to build repeatable configuration templates. The purpose of this sample project is to show the use of Python and Jinja2 to generate network Jinja2 Template in netconf help us separate network device configurations from automation script. How is Jinja2 useful for network engineers? Jinja2 templates can render configurations with specific values, such as interface names, IP addresses, descriptions, or Nov 21, 2023 · Instead of manually typing out each configuration, you create a template. Contribute to jasonbarbee/ansible-cisco-templater development by creating an account on GitHub. Therfore I'm using the system variable __device. Also, note that the xml templates are checked against the model at load time, and gives much more robustness than this approach. 7-72328) And now I've been struggling with a Jinja for-loop in DNA templates DNA center provides a sample template Multi-Switch Template with Macro in which the line {% for stack_num in range(1, number_of_stacks) %} is used t Aug 11, 2025 · I am attempting to configure a CLI template using Jinja2 and I am working with ChatGPT 5 but it is not helping much. A few examples including creating a simple static HTML page are presented. Jun 21, 2024 · In this way, the tutorial provides a glimpse into the fundamentals of building Velocity and Jinja2 templates and provides examples that you can download and expand from. configure many devices through Ansible with jinga2 template if you don't want to write a different task for each device. Streamline network automation with Cisco Catalyst Center templates using Jinja2 and CSV for scalable, consistent, and secure device configuration. Dec 12, 2024 · Hopefully this is a right place to ask this but I was wondering if there is a way to have a user defined values for a Jinja definition in Dnac. Say I need a dynamic amount of 3 values being ip address, mask and dot1q tag to create sub-interfaces but every device has different amounts. Cisco Facts and Genie Parsed Commands to Business-Ready Documentation Ansible Playbooks Written by John Capobianco Ansible has several "Facts" modules - ios_facts and nxos_facts - that capture data and transform it into JavaScript Object Notation (JSON) which we then use Jinja2 Templates to transform again into business-ready documentation Cisco also has release Genie parsers - combined with Generating Configuration with Jinja2 # With Jinja2, you can create templates that define the structure of your configuration files. ios. It allows you to embed variables, apply filters, and use loops/conditions inside configuration files. jinja2 - Configuring a Jinja template in Cisco DNAC Template editor - Stack Overflow Jun 21, 2024 · This episode focuses on utilizing Catalyst Center to configure devices via DayN regular and composite templates. I have very basic knowl Dynamic Configuration with Jinja2 Templates in Ansible # Creating dynamic and adaptable configurations for various network setups is crucial in network automation. {% set building = 'YAB' %} Building is { { Sep 19, 2024 · Blocked List Commands Sample Templates Blocked List Commands Blocked list commands are commands that cannot be added to a template or provisioned through a template. By using the NSO schema API we can create services that are more model independent and where the code automatically adjusts to model changes. In this second of a two-part tutorial, you'll learn how to create configuration templates in Cisco Catalyst Center, using the Jinja2 templating language. Jinja2 Templating Tutorial for Beginners Jinja2 Template Example Jinja2 Template Example Python Python Jinja2 Template from File Jinja2 Templates for Cisco Category: Network Automation Get Access to my Ansible Course NOW Python Package Manger Jun 18, 2023 · I would like to know if it is possible to do the following: - interact with the template to assign different description based on the selected interfaces. split (". The reason is that these variables all tie into inventory related databases, and since the device doesn't go into inventory until PnP is complete, you will get NULL responses when querying and field. Templates are written in the Jinja2 language and can be associated with devices roles, platforms, and/or individual devices. Mar 19, 2019 · Preamble Example CSV Switch Priorities Switch Numbers Process/Explanation Snippet Merged Config Example Validation Logs Preamble This was created for and used with FreeZTP, but can likely be used with any Jinja2 templating system. Is this possib Aug 28, 2017 · Hi all I searching for a Jinja2 that can help me with my cisco router acls. In this post, I tried to automatically generate the config from a port management table and parameter sheet by rendering Jinja2 template. j2 files (Jinja2 format) and placed inside the templates/ directory of your role or playbook. The rest of this page describes YAML configuration, Ansible playbook, and Jinja2 template I used to remove configuration section from Cisco IOS device configuration with regex matches (the full source of the playbook can be found on github). Here is the problem: no username admin -> After Jun 6, 2017 · これは何？ Ciscoのコンフィグ*を生成するPythonスクリプト。Jinja2を使ってパラメータを埋めるサンプル。何かと汎用性が高そうなので、自分用にメモ。変数を含むコンフィグテンプレートと、変数に対する値をまとめたCSVの二つを用意して、スクリプト実行すれば複数のコ In this Ansible Jinja2 Template Tutorial I will be demonstrating how to use Ansible to generate network configurations from templates for Cisco routers. We want to delete all local users in our network environment and add a new one, with a strong password. The configuration template is a Jinja2 template with the file name ios-xe_template. Feb 21, 2018 · But, as long as your template is in cisco ios format it should work fairly well. Cisco DNA Center Jinja2 Configuration Templates APIs Cisco Products & Services: Cisco DNA Center and Cisco IOS XE devices managed by Cisco DNA Center Tools & Frameworks: Python environment to run the script Usage This script will load the file with the name {file_info} The file includes the information required to deploy the template. Are you staring at your config and wondering what goes into YAML and what goes into Jinja2? In this tutorial, you will learn some basic skills on creating a template from your config with Jinja2 and YAML. config, arista. Ceate a set of Jinja2 templates in the dnac-templates/ directory, for example templates to deploy new Vlans or interfaces or other tasks which are not covered by DNAC's existing workflows. Description: Serves as the main configuration template, orchestrating the inclusion and configuration of various network settings and features. In particular, when introducing a large amount of layer2 switches at once, it is easy to inadvertently forget to modify the unique settings. It simplifies the process of creating and Sep 26, 2022 · I figured this out finally. Apr 25, 2018 · Render your first network configuration template using Python and Jinja2 4 min read Using Python and Jinja2 to automate network configuration templates is a really useful way to simplify the repetitive tasks network engineers face on a daily basis. Jan 13, 2024 · Manual switch configuration is too troublesome? Try Jinja2 templates to initiate automated setup, making your network management more efficient! Jinja2 switch template usage with FreeZTP. Third section assigns dynamic values to variables. Jinja Jinja is a fast, expressive, extensible templating engine. uk Apr 25, 2018 · Using Python and Jinja2 to automate network configuration templates is a really useful way to simplify repetitive network tasks, that as engineers, we often face on a daily basis. Chec I am configuring a Jinja template in Cisco DNAC Template editor to provision new switches. For example, the simple script below compares the building name provided in a variable. Extension for Visual Studio Code - Syntax highlighting for jinja(2) including HTML, Markdown, YAML, Ruby and LaTeX templates include directives: Includes additional Jinja2 templates for interfaces, BGP neighbors, ACLs, prefix-sets, route-maps, and VTY configurations. Dec 31, 2019 · Introduction It is troublesome to create configs for network devices manually. In other words, the file contains ZERO Jinja2 variables and ZERO Jinja2 control structures. 3. Jul 10, 2024 · In this short post we' will explore how to use Jinja2 to create flexible, reusable OSPF configurations and make you the Jinja2 template master and learn few ways to approach Jinja2 templating for our OSPF configuration, along with explanations and considerations for scaling and reusability. These sample templates and JSON files are supplied for easy import into Catalyst Centers’ template editor for quicker adoption. Below is an example Jinja2 template which renders a simple network switch configuration file. Within this name I've got some information I'd like to use, e. g. The package or project includes Jinja2 templates which are rolled into Composite templates to allow for quick deployment of: Simple Access Point and Workstation Deployments. The problem I am having is getting Jinja to split the string variable within the Cisco Template tool. Template First section provides guidelines and outputs the variables that ZTP passed into the template. I am trying the same but I seem to Oct 8, 2025 · Templating (Jinja2) Ansible uses Jinja2 templating to enable dynamic expressions and access to variables and facts. This is easy enough, but my question is should I use one large template for the entirety of the config or split it into multiple templates (base, snmp, ntp, Jul 29, 2021 · Hello, i'm working on the PnP-Function with DNA-Center and Jinja Template. To bring together some of the concepts explained in the previous articles around network automation let’s work through a hands-on demonstration. Aug 23, 2021 · Turbocharge your Jinja2 Templates Optimize your network configuration templating using Jinja2 tweaks Posted by mayuresh82 on August 23, 2021 - 10 minute read Dec 7, 2022 · subnet $ {SiteSubnet} Jinja2 {% set octets = ' { { switchip }}'. With your data fed into this template, Jinja2 effortlessly generates the full configuration for you This repository provides examples and guidance for using Catalyst Center, an intelligent automation and assurance platform for campus networks. This section will guide you through creating dynamic Jinja2 templates that can handle different OSPF configurations for routers Rendering Configuration from a Jinja2 Template using a Playbook - Ansible Playbooks, Jinja2 Templates and Roles Oct 19, 2021 · Solved: When setting a variable that I want to use else where in a Jinja template, I find it does not seem to work. Network engineers have also found it to be an excellent tool for rendering configurations for their network devices. Especially the built-in System Variables are useful in creating templates. When applying the configuration template to network devices, variables in the configuration template are replaced with data of each About Cisco IOS-XE Catalyst 9K Configuration Template Generator using Python and Jinja2 Dec 11, 2019 · Hi, I'd like to create configuration (day-n) templates with some multiline commands. The playbook uses the following variables to describe the configuration sections that have to be removed. We want to create templates for Day0 onboarding, and DayN templates as well. eos. The output is saved to a file named cisco. Here is my Question: I want to add multiple VLANs (the exact number of VLAN is not always the same) via a Jinja Template. If you use blocked list commands in your templates, it shows a warning in the template that it may potentially conflict with some of the Cisco DNA Center provisioning applications. Jinja2 Tutorial series Jinja2 Tutorial - Part 1 Feb 20, 2020 · This post is part of the Network Automation 101 guide. Expand for Dynamic Jan 17, 2024 · Configuration Templates Configuration templates are written in the Jinja2 templating language, and may be automatically populated from remote data sources. While I was attempting to write some templates for a project at work, I found that Cisco’s documentation on the su Mar 22, 2023 · Hello guys. Within Jinja2 templates in Catalyst Center its possible to both Include and Extend regular templates. Repo with sample code on how to use the Cisco DNA Center Jinja2 templates - cisco-en-programmability/dnacenter_jinja2_templates Aug 5, 2025 · This article introduces Jinja and then describes the basics of working with it which includes how to render templates using Jinja and Python3, passing data to the template through arguments, and basic Jinja syntax (delimiters, expressions, control structures - decisions and loops). Jinja2 Template Exploration - Ansible Playbooks, Jinja2 Templates and Roles Feb 26, 2024 · Description In this first of a two-part tutorial, you'll learn how to create configuration templates in Cisco Catalyst Center, using the Jinja2 templating language. Jun 11, 2023 · Instead of manually writing each configuration, you can create a template and populate it with various data to produce specific configurations for each device. I mean, I want to have different description to all ports. Jun 17, 2022 · Hi Team, I wondered if one of you could share some Jinja2 Template design principles (What to do / What not to do) please ? Any link would be appreciated ! Thanks in advance, Jerems May 26, 2022 · I'm working with some Jinja2 templates and have a need to use Jinja2's 'ipaddr' filter. I am in the process of installing Catalyst Center in our environment. HTML templates can use autoescaping to prevent XSS Mar 26, 2014 · Network Configuration Templates Using Jinja2 March 26, 2014 in Systems 6 minutes Looking to go beyond basics with Jinja2? In this lab, you will learn how to use Jinja2 for documentation, not just configuration, a productivity tool for making your own templates more easily, and integrating Ansible into your pre/post checks in network configuration changes. Context data is applied to a template during rendering to output a complete configuration file. 5 and above and Template Editor in older releases. Generate Cisco Configuration Template Using Python3, Jinja2, and CSV with Validation This program is designed to generate a configuration template for Cisco Catalyst/Nexus switches. This repository provides examples and guidance for using Catalyst Center, an intelligent automation and assurance platform for campus networks. ") %} {% set SiteSubnet = octets [2] %} { { SiteSubnet }} I've tried multiple options recommened on various forums with no luck. In this blog post, we will explore the process of generating Cisco interface configurations using Python and Jinja2. I am new to creating templates, and wanted to see where I can learn more in depth scripting for either Jinja2 or Velocity. hostname to get the name of the current device. The doesn't provide me the correct output for: - interface macro's - banners (containing some special characters ($," (),#,-) I tried #INTERACTIVE mode, but Read this blog post to learn how to generate device configs with NetBox and configuration templating in NetBox. Examples of Templates used in Cisco Catalyst Center with Velocity or Jinja2 Scripting, Variables, and Composite Approaches yaml json automation programming jinja2 powershell rest-api velocity orchestration postman postman-collection jinja2-templates programmability dna-center dnac-templates Takeaways The Jinja2 template lookup plugin can allow us to template out a device configuration. Configuration comes out of Jinja2 template, can be run dynamic with variables 3. This template can be modified to include additional static configuration or variable configuration per individual need. Jan 17, 2022 · Hi, in a template I want to interate over all access interfaces (Gi) but not over the uplink unterfaces (Te). Oct 16, 2021 · Jinja2 is a very popular and powerful Python-based template engine. the hostname contains the device location Feb 12, 2021 · Hi all , with Velocity-Templates there was the possibility to add interactive or exec commands to the template which works fine. protocol secrets/keys, syslog server addresses, and other things that the template will use. The config (e. The business logic and base structure stay DRY in one template, while unique parameters get inserted dynamically during Generate Cisco Configuration Template Using Python3, Jinja2, and CSV with Validation This program is designed to generate a configuration template for Cisco Catalyst/Nexus switches. If you're new to the world of templating, know what templates are but never used Jinja before, or simply need to refresh your memory, then you should found this series useful. If there is a parent object the subsequent lines are indented by one space. Works good so far. Since this isn't well documented from a DNAC perspective, I've been trying to use some of the attributes/schema that are present in the Ansible version of ipaddr. For network engineers, knowing how to use Jinja2 is a valuable skill. Oct 17, 2016 · 1. In the samples I found the following: {% for interface in __interface %} {% if interface. The following commands are blocked in this Hey everyone, I have a very stupid issue but I somehow don‘t find a solution via googling. Define and import macros within templates. So i can't do: vlan {{VLANID}} name {{VLAN_NAME}} multiple times because i don't kno Feb 4, 2025 · In the Juniper world we generate a complete config with jinja2 and push to each device with functionality similar to "load overwrite <file>" this loads a complete configuration to the device, can this be done similarly with Cisco equipment? Oct 29, 2022 · In this post we saw how templates can automate deploying various types of configuration based on the Jinja language. I have watched some YouTube videos where someone generated configs files for devices using Netbox host_vars, the config_context and Jinja2 templates. By feeding these templates with data, you can quickly generate configurations that are consistent and tailored to the specific needs of each device. Includes real-world use cases with variables, templates, and filter logic. In this post, we'll go a little deeper into scripting in the Velocity Templating Language . This is plainly shown in the docs which I did not Aug 9, 2022 · The place to start here is to first convert the Jinja2 file over to a Jinja2 template, but with the file completely unchanged. Special placeholders in the template allow writing code similar to Python syntax. I found someone with a similar issue here. The best workaround I can think of so far is to create a Multi Jun 30, 2023 · Hi all, I'm practicing with templates in Cisco DNA center (Version 2. When this snippet (located at the bottom of this document) is added to a Jinja2 template it will automatically build out an EEM applet that will set switch Dec 28, 2021 · Learn how to automate the creation of network configurations using jinja in a modular way. And I found this but not sure if this will help me create my acls {% for key, value in vars [‘access_lists’]|dictsort (false, ‘key’) %} {% if … Apr 26, 2020 · This post is the first of the Jinja tutorial series where I'll provide an overview of the language, discussion of its features and a healthy dose of example use cases. Sep 14, 2015 · This week, I will show you how to build a simple python based configuration generator using the Jinja2 library with CSV and JSON based parameters. Overview. Apr 26, 2023 · Solved: I would like to create a Python job using Jinja2 templates to create golden configs. I've got the basics working, but I seem to be g Sep 26, 2024 · The template module is then used to process each interface through a Jinja2 template named template. Jan 20, 2025 · Hello, I'm currently building some DayN Templates to configure non fabric Catalyst 9k2 switches. towwg cg0 do2nvc 4azx xkribmv0 lsliyl onz eowcx q3 vkub

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