HN823: Defining A Modern Network Service

Heavy Networking51mApril 17, 2026

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AI-Generated Summary

In this episode of Heavy Networking, host Ethan Banks sits down with Mark Prosser, founder of Tornog, a Toronto-based network operators group, to explore the evolving definition of a 'network service' in the modern era. The conversation centers on how the complexity of today’s networks—driven by overlays, cloud integration, automation, and outsourced infrastructure—has made traditional service provisioning inadequate. Prosser argues that a true network service must be defined not just by technical configuration, but by end-to-end validation, business outcomes, and cross-organizational collaboration. He emphasizes that services are no longer just about connectivity, but about the full lifecycle of delivery, including ongoing testing, observability, and human coordination across silos. The discussion highlights the shift from 'boiling the ocean' (viewing the entire network as one entity) to thinking in terms of systems and services, with a focus on documentation, testing frameworks like NUTS and PyATS, and the role of AI in bridging knowledge gaps. The episode concludes with a call to action: organizations must start small, build iterative validation, and foster collaboration to deliver resilient, measurable services in an increasingly complex world.

Key Takeaways
1

A modern network service must be defined by end-to-end validation and business outcomes, not just technical configuration.

2

Testing should be continuous and iterative, not just a one-time check after provisioning.

3

Organizational silos between network, security, and application teams hinder service delivery—collaboration is essential.

4

Tools like NUTS, PyATS, and Thousand Eyes help validate services across complex, multi-layered infrastructures.

5

AI can help bridge knowledge gaps and automate documentation, reducing the burden on human engineers.

…and 2 more takeaways available in PodZeus

Chapters
0:00
3 min

Sponsor & Welcome: Network-as-a-Service with Meter

Ethan Banks opens the episode with a sponsor segment for Meter, a network-as-a-service provider offering integrated wired, wireless, and cellular solutions. He introduces the show’s format and location—Nanog 96 in San Francisco—and welcomes listeners to the podcast.

2:30
5 min

Introducing Mark Prosser & Tornog: A Canadian NOG Movement

We're not the only NOG in Canada. There's also Montreal NOG. Well, well done. Good for you. I'm glad you got a bunch of people in Toronto that are interested in that and then a bunch of people to draw from.

Highlight
7:30
10 min

The Evolution of Network Services: From VLANs to End-to-End Systems

A real service is end-to-end. It's many layers of abstraction. But cars have a lot of congestion. Is the service really servicing the applications or the business outcomes?

Highlight
17:30
13 min

Siloed Teams & the Challenge of Systems Thinking

The 1984 or 1986 book, The Goal also talks about this. And the Phoenix Project is basically a modern version of that, right? So this is the million dollar question...

Highlight
30:00
15 min

Testing, Validation & the Myth of 'Done'

You don't know what tests you need until your service, until you passed all your tests but the service still isn't working and then you go back and get a test.

Highlight
High-Impact Quotes
If you think it's elephant flows, get out of the room. I need something with a different thought pattern.
Amazon Engineer (via Mark Prosser)55:10
Viral: 90.0
A real service is end-to-end. It's many layers of abstraction. But cars have a lot of congestion. Is the service really servicing the applications or the business outcomes?
Mark Prosser11:30
Viral: 85.0
Start small: focus on 20% of the system that delivers 80% of the value, then scale iteratively.
Mark Prosser81:40
Viral: 82.0
Speakers

Host

Ethan Banks

Guest

Mark Prosser
Topics Discussed
Defining Modern Network Services95%End-to-End Service Validation92%Network Automation & Testing90%Siloed Organizations & Collaboration88%Sociotechnical Systems85%Regional NOGs & Community Building80%AI in Network Operations78%Documentation & Knowledge Management75%
People & Brands

Mark Prosser

person

18xPositive

Ethan Banks

person

15xNeutral

Tornog

organization

12xPositive

Meter

organization

8xPositive

Nanog 96

other

6xNeutral

Packet Pushers

media

5xPositive

NUTS

product

4xPositive

PyATS

product

4xPositive

SD-WAN

other

4xNeutral

Thousand Eyes

product

3xPositive

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