Resolving Networking Problems (Performance Problems) of a WD My Cloud NAS System


Ever since I had bought a Western Digital My Cloud System with 4 TB of Backup space, I had problems with it: after some hours, the system was unreachable over the network. Several firmware upgrades later the problem has aggravated, and the system was reachable only for 10 to 20 minutes after each power cycle. … More Resolving Networking Problems (Performance Problems) of a WD My Cloud NAS System

Docker HTTP Proxy and DNS Configuration Cheat Sheet (now includes automatic HTTP Proxy detection)


This blog post provides a little cheat sheet on running a Linux host with or without a Docker client behind HTTP proxies. For Ubuntu and similar Linux distributions, we will also show how to detect the proxy available and adapt the proxy settings accordingly. This comes handy, if you are a road warrior that often … More Docker HTTP Proxy and DNS Configuration Cheat Sheet (now includes automatic HTTP Proxy detection)

Automating Network Provisioning with Cisco APIC — Exploring the REST API


How to automate the configuration of network devices? Cisco APIC-EM (= Application Policy Infrastructure Controller) is a controller that can help us with that task. In this blog post, we will explore its modern REST API for accomplishing basic tasks like creating, reading, updating and deleting (CRUD) objects like APIC users (e.g. administrators) network discovery tasks network devices and their configurations. We … More Automating Network Provisioning with Cisco APIC — Exploring the REST API

CCIE Written HowTo — where to get the Questions from (also for MCSE and others)


Every two years, I need to re-certify for the Cisco Certified Internetworking Expert certification (CCIE). This time I intend to post my findings on this blog. I intend to describe where to get Example Questions from and how to read them (works for all Exams, not only Cisco exams) Previously, I had planned to write following other parts: Part … More CCIE Written HowTo — where to get the Questions from (also for MCSE and others)