routeprotocol

EEM applets are build of multiple building blocks. EEM applets use a similar logic to if then statements used in other programming languages in the sense of ‘if an event happens this action is taken’. A couple examples of an event occurring could be if an interface changes its state, or if a specific command…

Embedded Event Manager (EEM) is a flexible and powerful Cisco IOS tool. EEM allows engineers to build applets that can automate tasks with scripts in the scripting language Tcl. Scripts can execute based on the output of an action or an event on the device. EEM is contained all within the device and does not…

RESTCONF as defined in RFC 8040 is used to programmatically interface with data defined in YANG models whilst also using datastore concepts defined in NETCONF. The goal of RESTCONF is to provide a RESTful API experience whilst still leveraging device abstraction capabilities provided by NETCONF. RESTCONF supports the following HTTP methods and CRUD operations: GET…

NETCONF as defined in RFC 4741 and RFC 6241 is an IETF standard that uses the YANG data models to communicate with various devices on the network. NETCONF can run over SSH, TLS and Simple Object Access Protocol (SOAP). Some common use cases for NETCONF: Collecting status of specific fields Changing the configuration of specific…

Yet Another Generation (YANG) modelling language, defined in RFC 6020 uses data models. Data models are used to describe whatever can be configured on a device, whatever can be monitored device, and all the administrative actions that can be executed on a device, including all the notifications that a device can generate. All of these…

Cisco DNA Centre expects all incoming data from the REST API to be in JSON format. HTTP POST function is used to send the credentials to the DNA Centre Controller. Cisco DNA Centre uses basic authentication to pass a username and password to the Cisco DNA Centre Token API to authenticate users. The API is…

Code Result Reason 200 OK Using GET or POST to exchange data with an API 201 Created Creating resources using a REST API call 400 Bad Request Request failed due to client side issue 401 Unauthorised Client not authenticated to access site or API 403 Forbidden Access not granted based on credentials that were supplied…

Extensible Markup Langauge Extensible Markup Language (XML) is a tag based language. The tag must begin with a ‘<‘ symbol and end with a ‘>’ symbol. A start tag named named interface would be represented as <interface> The tag must also be closed with an end tag, known as </interface> One key feature of XML…

Postman is an application that makes it possible to interact wiht APIs using a console-based approach. Postman allows for the use of various data types and formats to interact with REST-based APIs The Postman application has sections that can be interacted with: History History shows a list of all recent API calls using Postman Collections…

An API that uses REST is often referred as a RESTful API. RESTful APIs use HTTP methods to gather and manipulate data. As there is a defined structure on how HTTP works, HTTP offers a consistent way to interact with APIs from multiple vendors. REST uses different functions to interact with data: HTTP Functions HTTP…