Hank Preston
Principal Engineer
Learning and Certifications
Articles
Read-Only YANG Leaves: Where Does the Data Come From?
5 min read
DevNet's Hank Preston digs into another user's question related to model driven programmability. Do you have a question about network automation? You can Ask Hank!
Native, IETF, OpenConfig… Why so many YANG models?
5 min read
Which YANG model to use for your project? Ask Hank takes a look at your options, and how model driven programmability is a foundational technology for the automation engineer.
How can I automate a MAC address interface report?
8 min read
Hank's back to answer another question from the community. This time we use automation to associate ARP data, MAC addresses, and network interfaces.
Dear Hank… Help Me with RESTCONF URL Creation
4 min read
Got a network automation question? Ask Hank. Here, a network engineer wants to understand how the URLs for RESTCONF are constructed from the YANG models, and how to use the feature for updating IP addresses.
Tune in to the “Creators” Channel at DevNet Create
2 min read
October 13th, DevNet Create 2020 goes virtual, and goes global with three regional programs featuring use cases, showing code, and innovations relevant to your region.
Part 2: NetDevOps Goes Beyond Infrastructure as Code
5 min read
Network configuration pipelines can be a complex maze of forks and paths that require special timing, and keys. The current network configuration pipeline needs to go, and be completely replaced in NetDevOps.
Part 1: Embrace NetDevOps, Say Goodbye to a “Culture of Fear”
4 min read
NetDevOps is one of many new terms coming into the IT lexicon as “DevOps” has become widely adopted and lauded as a positive and valuable approach to software development. As the IT industry looks to expand DevOps to other areas, NetDevOps has emerged along with other new terms such as “ChatOps”, “SecDevOps” and even “NoOps”. […]
Using CLI as Training Wheels with NETCONF/YANG
6 min read
Introducing an entirely new era of networking
Mid Season Check-in with NetDevOps Live!
3 min read
NetDevOps Live! episodes in April were fantastic, looking at Ansible, GitLab, Batfish and HashiCorp. Get ready for May's amazing line-up, with shows on Postman, NetBox, and ELK!
Announcing NetDevOps Live! Season 3
3 min read
Take a look at what we've got in store for Season 3 of NetDevOps Live! — powerful tooling available that every NetDevOps engineer can use in their tool chest: Batfish, Postman, HashiCorp, Ansible Network Automation, NetBox and more!
CLEUR Preview! Source of Truth Driven Network Automation
9 min read
Learn what a Source of Truth is, and see how DevNet Sandbox uses Netbox to drive network automation!
Network Service Based Automation Part 2 – Building Services
36 min read
Part 2 video looks at the development process, and walks you through the 4 steps in service creation.
What Changed In My Network?!! Let Genie Tell You
4 min read
Network behaving differently? See how to use Genie to discover what changed (even when everyone is saying, "nothing changed").
Network Service Based Automation Part 1 – The Experience
21 min read
DevNet Sandbox is using automation to configure and manage the network in a Network Service based model.
Preparing to Automate a New Data Center for DevNet Sandbox
7 min read
DevNet Sandbox provides engineers and developers access to Cisco, partner, and open source infrastructure, and software as a service from the cloud.
Some Real World Network Automation Lessons Learned
5 min read
For the first time in about eight years, I was back in a role where I had day to day responsibilities for a production environment.
How Do I Get Started Learning Network Automation? – Revisited
7 min read
Cisco Certifications offer a huge value to engineers looking to learn and prove new skills. The new DevNet Certification paths offer a new tool to help guide your learning.
Detecting Network Abuse with Automation
10 min read
DevNet Sandbox is a free cloud service open to anyone interested in exploring Cisco APIs or building applications on one of the variety of platforms available.
NetDevOps Live! Season 2 Shines a Spotlight on Network Automation
3 min read
NetDevOps Live! is back for another season with a look at network automation from start to finish. Preview our program beginning in April and culminating at Cisco Live in June.
NetDevOps Invades DevNet Sandbox
3 min read
How do I get started with NetDevOps and automation in my real network? What does it take to leap the chasm from "dev" to "prod?"
Introducing NetDevOps Live!
2 min read
Our new, weekly webinar and video series is dedicated to NetDevOps and network programmability topics, giving you expert-led lab time, and making it easy to keep up and participate.
New NetDevOps Home on DevNet Brings Resources and Community Together
3 min read
The new NetDevOps page on DevNet puts blog posts, videos, webinars, learning labs, and current community discussion in one convenient place.
virl up – NetDevOps Network Simulation Done Right
6 min read
With "virlutils" NetDevOps engineers get a CLI tool for managing network simulations. A DevNet blog, sandbox, and video show you how to get started
How Do I Get Started Learning Network Programmability?
6 min read
Learning Labs, Sandboxes, live events, certification courses, and even a network programmability basics video course offer excellent resources to get you launched on your network programming journey.
Why is Cisco Teaching Me Python?
2 min read
Is learning topics related to programmable networks - like Python, JSON, REST APIs - really critical to your success as a network engineer?
Bringing Programmability and NetDevOps to Melbourne for #CLMel
3 min read
Wow... Cisco Live 2018 in Melbourne is going to be an amazing time, and I can't wait to see everyone there. Let me know what you are most looking forward to. For convenience, here are the links to my sessions again, register now!
What Does “Network as Code” Mean?
7 min read
Networking Evangelist Hank Preston proposes three principles for Network as Code within NetDevOps. Do you agree?
1