The Hedge 52: Tobi Metz and the Technologist Question

By Russ | 16 September 2020 | Comments Off on The Hedge 52: Tobi Metz and the Technologist Question

Tobi Metz asked What is a Technologists? in a recent blog post. Tobi joins Tom and Russ on this episode of the Hedge to expand on his answer, and get our thoughts on the question.

The History of Comm Servers with Kevin Herbert

By Russ | 15 September 2020 | Comments Off on The History of Comm Servers with Kevin Herbert

Communication Servers designed to support hundreds or thousands of users reached their peak capabilities just as dial-up service access began to recede in importance. In fact, many network engineers today have probably never managed a dial-up communications server, which were once used to connect everything from individual users to services like AOL and remote workers to entire sites (hence OSPF’s demand circuit capability). Kevin Herbert joins us to discuss the early work on communication servers, including some of the challenges of working with early networking hardware.

The Hedge 51: Tim Fiola and pyNTM

By Russ | 9 September 2020 |

Have you ever looked at your wide area network and wondered … what would the traffic flows look like if this link or that router failed? Traffic modeling of this kind is widely available in commercial tools, which means it’s been hard to play with these kinds of tools, learn how they work, and understand how they can be effective. There is, however, an open source alternative—pyNTM. While this tool won’t replace a commercial tool, it can give you “enough to go on” for many network operators, and give you the experience and understanding needed to justify springing for a commercial product.

The Hedge 49: Karen O’Donoghue and Network Time Security

By Russ | 2 September 2020 | Comments Off on The Hedge 49: Karen O’Donoghue and Network Time Security

Time is critical for many of the systems that make the Internet and other operational networks “go,” but we often just assume the time is there and it’s right. In this episode of the Hedge, Karen O’Donoghue joins Alvaro and Russ to talk about some of the many attacks and failures that can be caused by an incorrect time, and current and ongoing work in securing network time in the IETF.

The Hedge 50: The Challenge of Growing People

By Russ | 2 September 2020 | Comments Off on The Hedge 50: The Challenge of Growing People

Many network engineers complain about their companies not giving them opportunities—but how many think about helping the company grow in a way that allows them to have the opportunities they desire? Scott Morris, aka “evil ccie,” joins Tom and Russ on this episode of the Hedge to talk about the challenges of certifications, growing people, and people learning how to grow in a way what improves the business. Sometimes growing means creating opportunities rather than just waiting for them to knock.

History of Networking: Networking at Google with Richard Hay

By Russ | 1 September 2020 | Comments Off on History of Networking: Networking at Google with Richard Hay

Google fascinates network engineers because of the sheer scale of their operations, and their obvious influence over the way networks are built and operated. In this episode of the History of Networking, Richard Hay joins Donald Sharp and Russ White to talk about some past designs and stories of failure and success in one of the world’s largest operating networks.

The Hedge 48: Chris Romeo and the State of Security

By Russ | 19 August 2020 | Comments Off on The Hedge 48: Chris Romeo and the State of Security

Chris Romeo is a famous application security expert who has spent the last several years building a consulting and training company called Security Journey. Chris joins Tom and Russ to talk about the state of security and what network engineers need to know about security from an application perspective.

History of Networking: An African Perspective of the Internet

By Russ | 18 August 2020 | Comments Off on History of Networking: An African Perspective of the Internet

Dawit Bekele began his journey with the Internet while at college—but on returning to Africa, he discovered there was very little connectivity. While he was not involved in the initial stages of engineering the Internet in Africa, he began as an early user and proponent of connecting his home continent, and is now part of the Internet Society, helping to grow connectivity.

The Hedge 47: Scott Burleigh and the Bundle Protocol

By Russ | 5 August 2020 | Comments Off on The Hedge 47: Scott Burleigh and the Bundle Protocol

In this episode of the Hedge, Scott Burleigh joins Alvaro Retana and Russ White to discuss the Bundle Protocol, which is designed to support delay tolerant data delivery over intermittently available or “stressed” networks. Examples include interstellar communication, email transmission over networks where access points move around (carrying data with them), etc. You can learn more about delay tolerant networking here, and read the most recent draft specification here.

History of Networking: Stan Hanks and GRE

By Russ | 4 August 2020 |