News

An Artificially Intelligent Peer Reviewer Arrives
An Artificially Intelligent Peer Reviewer Arrives
How should network engineers be thinking about and using AI right now, and what to could they expect for the future? Here, we focus on one surprising use case that I found to be a bit exciting: Using AI to peer review your work. Buckle up, and let's check it out.
June 27, 2024
A Technical Look at IPSEC VPN Tunnel Creation
A Technical Look at IPSEC VPN Tunnel Creation
Explore the IPSEC VPN tunnel creation process, including "Phase 1" and "Phase 2," how Security Associations are impacted when ACLs identify "interesting traffic," and even the packets involved in the communications.
July 28, 2023
Influencing Forwarding Behavior with Policy Based Routing
Influencing Forwarding Behavior with Policy Based Routing
Learn how to configure policy-based routing to influence forwarding behavior in this step-by-step overview with Hank Preston, Principal Automation Engineer.
May 25, 2023
Be on Guard This Spooking Spanning Tree Season
Be on Guard This Spooking Spanning Tree Season
Take the scare out of spanning tree with a strong foundation in practical network design and configuration practices. You never know when it might come back to haunt you, just like in Hank's spooky story.
Oct. 31, 2022
Applying DevNet Associate Skills to Real World Tasks – June Webinars
Applying DevNet Associate Skills to Real World Tasks – June Webinars
Are you a network engineer turning network automation engineer? Join the DevNet Associate Prep Program for completely FREE access to materials and webinars to take your skills to the next level.
May 27, 2021
How to Deal with Multiple Keys in a RESTCONF URL
How to Deal with Multiple Keys in a RESTCONF URL
Do you have a question about network programming or NetDevOps? Why not "Ask Hank?" In this blog, let's try to demystify RESTCONF use for everyone.
May 6, 2021
How can I automate device configurations using CML2?
How can I automate device configurations using CML2?
Cisco Modeling Labs is a great tool for learning all aspects of networking, including automation. Hank discusses options for making the setup and management of your lab topology fast, easy, and automated.
Feb. 26, 2021
Read-Only YANG Leaves: Where Does the Data Come From?
Read-Only YANG Leaves: Where Does the Data Come From?
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!
Jan. 19, 2021
Native, IETF, OpenConfig… Why so many YANG models?
Native, IETF, OpenConfig… Why so many YANG models?
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.
Jan. 11, 2021
How can I automate a MAC address interface report?
How can I automate a MAC address interface report?
Hank's back to answer another question from the community. This time we use automation to associate ARP data, MAC addresses, and network interfaces.
Dec. 22, 2020
Dear Hank… Help Me with RESTCONF URL Creation
Dear Hank… Help Me with RESTCONF URL Creation
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.
Dec. 17, 2020