Hedge 109: Edward Lewis and the DNS Core

By Russ | 18 November 2021 | Comments Off on Hedge 109: Edward Lewis and the DNS Core

What is the “core” of the DNS system, and how has it changed across the years? Edward Lewis joins Tom Ammon and Russ White to discuss his research into what the “core” of the domain name system is and how it has changed—including the rise of the large cloud players to the core of the default free zone.

Hedge 108: In Defense of Boring Technology with Andrew Wertkin

By Russ | 11 November 2021 | Comments Off on Hedge 108: In Defense of Boring Technology with Andrew Wertkin

Engineers (and marketing folks) love new technology. Watching an engineer learn or unwrap some new technology is like watching a dog chase a squirrel—the point is not to catch the squirrel, it’s just that the chase is really fun. Join Andrew Wertkin (from BlueCat Networks), Tom Ammon, and Russ White as we discuss the importance of simple, boring technologies, and moderating our love of the new.

Hedge 107: Career Advice with Terry Slattery

By Russ | 4 November 2021 | Comments Off on Hedge 107: Career Advice with Terry Slattery

Whether you’re just starting in your technology career, or you’re an old hand who likes to go back to basics and understand how to move forward in your career, this episode of the Hedge is for you. Terry Slattery joins Tom Ammon and Russ White to discuss the things you can do to build a successful career as in the world of network engineering.

Hedge 106: Compositional Network Modeling and Zen

By Russ | 27 October 2021 | Comments Off on Hedge 106: Compositional Network Modeling and Zen

One topic of constant discussion among network engineers is the basic problems surrounding network modeling, which leads to configuration, telemetry, and troubleshooting. In this episode of the Hedge, Ryan Beckett, Tom Ammon, and Russ White discuss Zen, a general framework for compositional network modelling.

Hedge 105: Johan Gustawsson and Changing Provider Architectures

By Russ | 20 October 2021 |

Many service providers have the feeling that they “didn’t do anything wrong, but somehow we still lost.” How are providers reacting to the massive changes in the networking field, and how are they trying to regain their footing so they can move into the coming decades better positioned to compete? Join Johan Gustawsson, Tom Ammon, and Russ White as we discuss the impact of merchant silicon and changing applications on the architecture of service providers.

Hedge 104: Automation with David Gee

By Russ | 13 October 2021 |

Automation is often put forward as the answer to all our problems—but without a map, how can we be certain we are moving in the right direction? David Gee joins Tom Ammon and Russ White on this episode of the Hedge to talk about automata without a map. Where did we come from, what are we doing with automation right now, and what do we need to do to map out a truly better future?

Hedge 103: BGP Security with Geoff Huston

By Russ | 6 October 2021 |

Our community has been talking about BGP security for over 20 years. While MANRS and the RPKI have made some headway in securing BGP, the process of deciding on a method to provide at least the information providers need to make more rational decisions about the validity of individual routes is still ongoing. Geoff Huston joins Alvaro, Russ, and Tom to discuss how we got here and whether we will learn from our mistakes.

Hedge 102: BGP Security with Geoff Huston

By Russ | 29 September 2021 | Comments Off on Hedge 102: BGP Security with Geoff Huston

Our community has been talking about BGP security for over 20 years. While MANRS and the RPKI have made some headway in securing BGP, the process of deciding on a method to provide at least the information providers need to make more rational decisions about the validity of individual routes is still ongoing. Geoff Huston joins Alvaro, Russ, and Tom to discuss how we got here and whether we will learn from our mistakes.

Hedge 101: In Situ OAM

By Russ | 22 September 2021 | Comments Off on Hedge 101: In Situ OAM

Understanding the flow of a packet is difficult in modern networks, particularly data center fabrics with their wide fanout and high ECMP counts. At the same time, solving this problem is becoming increasingly important as quality of experience becomes the dominant measure of the network. A number of vendor-specific solutions are being developed to solve this problem. In this episode of the Hedge, Frank Brockners and Shwetha Bhandari join Alvaro Retana and Russ White to discuss the in-situ OAM work currently in progress in the IPPM Wg of the IETF.

Hedge 100: Supply Chain Diversity with Brooks Westbrook and Mike Bushong

By Russ | 15 September 2021 | Comments Off on Hedge 100: Supply Chain Diversity with Brooks Westbrook and Mike Bushong

Most network engineers don’t spend a lot of time thinking about their supply chain—you must call your favorite vendor, order, and a few weeks later the hardware shows up on your loading dock. It’s not so simple any more. If you disaggregate, you need to manage your software and hardware supply chains separately. You need to think about security in your supply chain—is that software package backdoored? Moving to the cloud might seem to solve these problems, but they don’t. Even virtual networks have physical limits.