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Local Fault and Remote Fault in Ethernet Standards

A common issue network operators troubleshoot are down or intermittently flapping (meaning, going down and coming back up erratically) links. The root cause of these issues tend to be simple in nat...

Filtering NX-OS Ethanalyzer on CoPP Classes

Keeping the control plane of a network device free from excessive traffic is a critical component of keeping the network stable and secure. On Cisco Nexus switches, the Control Plane Policing (CoPP...

TL;DR: Install Minikube on Ubuntu 22.04

This post serves as a quick reference for installing Minikube on Ubuntu 22.04. It is not a wholistic replacement for the official Minikube documentation on this subject, but serves as a quick summa...

TL;DR: Install AWX with Minikube on Ubuntu 22.04

This post serves as a quick reference for installing AWX through a local Minikube cluster on Ubuntu 22.04 using AWX Operator. It is not a wholistic replacement for the official AWX Operator documen...

TL;DR: Install Docker on Ubuntu 22.04

This post serves as a quick reference for installing Docker on Ubuntu 22.04. It is not a wholistic replacement for the official Docker documentation on this subject, but serves as a quick summary o...

Practical Generic Type Hinting in Python

If you’ve ventured into type hinting in Python, you’re probably aware of the fundamentals. You’re comfortable hinting function arguments and return types using basic types like int or str, and you ...

Granular Enforcement of Python Unit Test Coverage through Code Inspection

If you’re maintaining a medium-sized software project, you’ve probably found yourself in a situation where you’ve added a new feature or model to your Python project and then realized that you forg...

Block/Column Select for Network Operators, NetDevOps, and Network Automation Developers

One of the most powerful, but underrated tools available to network operators is a feature called “block select” (sometimes also called “column select”) supported by most text editors, such as Note...

Cisco ASR 1000 Routers - Booting Cisco IOS from TFTP in ROMMON Mode

While working with Cisco ASR 1000 series routers, you may find yourself in a situation where the router (or a Route Processor, in the case of modular routers) will only boot into ROMMON mode: Init...

Cisco ASR 1000 Routers - 'Please reset before continuing' or 'Please reset before booting' in ROMMON

While working in ROMMON mode of Cisco’s ASR 1000 series of routers, you may encounter the Please reset before continuing or Please reset before booting error messages that prevent most commands fro...

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