NRE-Bytes

Morsels of NRE Wisdom

So you want to GNMI ?

Practical aspects to consider when using GNMI for Network Telemetry

GNMI for Network Telemetry For those readers who build and manage Network Telemetry stacks, GNMI (GRPC Network Management Interface) is probably one of the hottest topics being discussed right now, and for good reason. The industry has relied far too long on vendor specific mechanisms for obtaining telemetry data from network devices. Its been a viscious cycle of vendors heavily promoting their own telemetry stacks thereby increasing the dependency on those stacks while further de-incentivizing them to work on anything collaborative and standardized for the benefit of end customers.

Posted by mayuresh82 Thursday, December 23, 2021

Turbocharge your Jinja2 Templates

Optimize your network configuration templating using Jinja2 tweaks

Jinja2 Templating for Network Configuration Management A critical part of Network Automation is Network Configuration management, which involves creating tooling or frameworks for maintaining, modifying, verifying and pushing configurations to network devices. In order to scale in a multi-vendor network environment, these configurations are often maintained as templates that are then rendered using variables ( usually YAML files or Python dictionaries ) according to specific business logic. Jinja2 is a Python based templating engine commonly used for this purpose.

Posted by mayuresh82 Monday, August 23, 2021

Building Dynamic Inventories in Nornir

Extending Nornir's functionality to build dynamic inventories from Netbox

Building Dynamic Inventories in Nornir Organizing your Nornir inventory into multiple groups based on device attributes is a useful feature that allows running tasks against specific groups of hosts. Other frameworks like Ansible ship with a powerful dynamic inventory management system that allows grouping and filtering. While Nornir 3.0 has a community driven Netbox Plugin, it is pretty basic and includes a simple way to pull in hosts from Netbox. In this blog post, we will see how we can extend this Netbox plugin to build a dynamic inventory with powerful grouping and run-time filtering capabilities.

Posted by mayuresh82 Monday, December 21, 2020

Getting started with Network Automation

Guidelines for a network engineer

Getting Started with Network Automation Network Automation is the “art” of automating repetitive tasks related to network provisioning, deployment, monitoring and alerting. The reason its an art is because you can conceptualize and develop very creative methods to achieve your network automation goals. To get started, it is important to first identify a problem that needs to be solved, ideally a simple one. This helps establish clear goals and helps navigate the myriad web of libraries and open source tools available at your disposal.

Posted by mayuresh82 Monday, May 6, 2019

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Network Reliability Engineer, fitness enthusiast and adventurer