Network changes tool to prevent disasters. Network changes Every time I manage a change to a customer network I have a chance to taste the many shades of possible IT Operations maturity levels. I collected some best practices over the years about how to reduce risk and speed-up the change and testing process. I'll …

Scenario As most IT professionals I usually configure network devices in a lab environment before the actual installation at customer site. I try to limit the installation as much as possible to a simple box moving process, spending most of the change window in a previously defined validation process. In this …

My new post about Cisco Network Assurance Engine: From Download to Value in 60 Minutes (or less) has been published, read it on GestaltIT Tech Talks.

This story starts with a phone call at night. If you worked in IT long enough you know what it means. Customer's HQ network is down and since the day before I've replaced a pair of data center switches in a remote site I'm somehow involved based on the well-known principle last one who made changes is responsible. I …

My new post about Aruba 8400 programmability has been published, read it on Aruba Blogs.

My new post about Configuration and Hardware Assurance in the Datacenter with Cisco Network Assurance Engine has been published, read it on GestaltIT Tech Talks.

My new post about bandwidth limit enforcement on access points has been published, read it on Aruba Blogs.

At Cisco Live Europe in Barcelona I had a chance to see Cisco Candid (Network Assurance Engine) in action. My new post about Network Security Policy and Compliance in the Data Center with Cisco Network Assurance Engine has been published, read it on GestaltIT Tech Talks. Full video of TFDx session at CLEUR:

A couple of days ago Cisco released a Security Advisory. No big deal so far, level was informational so I didn't read it right away. Title is impressive: Cisco Best Practices to Harden Devices Against Cyber Attacks Targeting Network Infrastructure so i read it during a lunch break just to be aware of the contents. …

Lerveraging FMC API and TextFSM to import objects from ASA. Automation and programmability is not a new topic for me. Having studied Information Technology in High School I've always coded somehow, never making it my primary focus but always using it as a tool to make my life easier. I remember a script I did in Pascal …

For a Network Engineer living and working on the field has some challenges that are not common in office environments. I have a set of tools, hardware and software, that I bought or built over the years that allow me to accomplish my job in more effective way. I used to carry a small Access Point to provide …

Netshot Configuration and Compliance Management Software We live in a time of intent, automation, orchestration and a lot of wonderful tools that promise to make the life of network engineers easier. Sometimes reality is simpler and maybe less fascinating, real problems need to be solved quickly with a small budget. …

My new post about Floating Networks has been published, read it on Aruba Blogs.

In the previous post of this AirPiConsole series (part1, part2 I used Autossh to create a reverse tunnel from the device to a cloud VPS to permit remote access. In the previous post of this AirPiConsole series (part1, part2 I used Autossh to create a reverse tunnel from the device to a cloud VPS to permit remote …

My new post about Colorless Switches and Mac-Auth has been published, read it on Aruba Blogs.