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DEVNET Create Notes

Automation Benifits

1. Reduces Human Error

2. Improve Network Resilience

3. Improve times of changes to network

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DEVENT - RESTCONF

RESTCONF connects to infrastructure using REST(HTTP/S) API's using common HTTP methods, it also allows the use of YANG Data models with JSON Data formatting.

• GET: Retrieve Data
• POST - Creates Data
• PUT - Updates Data
• PATCH - Replaces DATA
• DELETE - Removes Data

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DEVNET - POSTMAN Basics

Creating Variables in postman collection

var jsonData = JSON.parse(responseBody);
pm.collectionVariables.set("token", jsonData.imdata[0].aaaLogin.attributes.token);

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DEVNET - Flask

Whats in flask? Is a microframe work thats used to write web applications, specifically:

-Minimal amount of featurs
-Mininmal amount of code approx 12000 lines -Very flexinble - doesnt get in your way -Very clean and readable -Extensively documented -Large community

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Software Design Foundations

These notes are based on Nick Russo's Pluralsight course Getting Started with Software Development Using Cisco DevNet

Bash

Useful bash commands:

• pwd Print working directory example:

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DEVNET - Kanban Basics

Kanban is a visual system for managing work as it moves through a process. Kanban visualizes both the process (the workflow) and the actual work passing through that process. The goal of Kanban is to identify potential bottlenecks in your process and fix them so work can flow through it cost-effectively at an optimal speed or throughput.

In kanban it's important to managed the balance of Utilization and Flow, this is to ensure there is not too much work being idle and that process cycles remain efficient.

Fundamental Principles

The two main fundamental principles is Visualize and Limit Work In Process(WIP).

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Software Design Foundations

These notes are based on Nick Russo's Pluralsight course Getting Started with Software Development Using Cisco DevNet

Bash

Useful bash commands:

• pwd Print working directory example:

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Writing Clean Code

"Good programmers write code humans can understand."

Why it's important to write clean code:

1. Makes reading it easier so you can understand the flow even after some time off.
2. Writing bad code causes a large amount of future technical debt.
3. Enhances your ability to write code faster in  over the long run.  

4. You won't end up being a verb... "Oh that guy is a Matt".

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DEVNET - NSO

Cisco Network Service Orchestrator is used to manage device network configuration using automation.

Components

Configuration DataBase (CDB) - Stores configuration and Devices, pushes configuration and allows diff.

NSO uses SSH/CLI to Cisco devices, SNMP and NETCONF to devices that support it.

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DEVNET - Consuming Cisco API

Meraki

Required headers in Meraki API

Meraki API Documents

Content: application/json