Underlay

No plan, no script, no net. In this episode Tony and Jordan give a peek behind the curtains on what has been going on with them both personally and professionally. This episode has a bit of everything. Personal struggles, new hobbies, work news, and a Defcon capture the flag story. This is the Smörgåsbord.

https://cumulusnetworks.com/ncpod to see what a modern open network operating system looks like for yourself.

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The post The Smörgåsbord appeared first on Network Collective.

From barber to Technical Leader and Developer Advocate, learn how Stuart Clark on the Cisco DevNet team transformed his career over the past 15 years.  In this episode, we talk with Stuart about his career journey, his role as a Developer Advocate focused on network automation, and the role Cisco DevNet can play along the way for those looking to enhance their automation skills.  We close by asking the question, “Will there be a DevNet Expert exam?” Listen and find out!

Links:

DevNet: https://developer.cisco.com/ Automation Exchange: https://developer.cisco.com/network-automation/ Code Exchange: https://developer.cisco.com/codeexchange/ DevNet Certifications: https://developer.cisco.com/certification/

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The post NTC – Cisco Devnet With Stuart Clark appeared first on Network Collective.

The long standing tradition of having a secure network perimeter and a lightly protected interior has been going by the wayside for quite some time now. But the introduction of new models of connectivity are forcing us to change the way we look at security all together and invent whole new models for protecting our networks. In today’s episode we’re going to be exploring how these changes are impacting security and talk about some of these new models that meet the needs of modern networks.

https://cumulusnetworks.com/automationpod to see what a modern open network operating system looks like for yourself.

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The post Perimeter Security is Changing appeared first on Network Collective.

Open source continues to accelerate in the network domain with projects such as Netmiko, NAPALM, and Nornir–all of which are led by individuals, not large organizations or venture-backed startups.  In this episode we sit down with Tony Nealon, creator of Netpalm. Netpalm is a network API platform that can abstract and render structured data, both inbound and outbound, to your network device’s native telnet, SSH, NETCONF or RESTCONF interface–leveraging popular libraries like NAPALM, Netmiko, and ncclient under the hood for network device communication

Helpful Links:

• https://github.com/tbotnz/netpalm
• https://netpalm.tech/
• #netpalm on Network to Code Slack

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The post NTC – Netpalm With Tony Nealon appeared first on Network Collective.

I think we’ve all been there. The network is down, you’ve tried all the things that you know how to do, and now it’s time to call vendor support to figure out what the heck is going on with your network. Some of us dread this situation as navigating the support process can be daunting at times. We’re hoping to give you some tips in today’s episode to make that process go a little smoother. Listen in as we talk about our experiences with vendor support and what we’ve learned along the way to make the support process as painless as possible.

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The post Navigating Technical Support appeared first on Network Collective.

A gaggle of networking geeks sits around the virtual roundtable and has a conversation on current events. Topics include the ever moving SD-WAN market landscape, our favorite (and least favorite) tools that have emerged since plunging into pandemic mode, and an honest discussion on whether or not support from our major vendors has been deteriorating or not.

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The post SD-WAN’s Musical Chairs, Tools, and the State of Support appeared first on Network Collective.

In today’s episode we sit down with Network to Code’s founder, Jason Edelman, to discuss his personal networking journey, how Network to Code came to be, and how he views the networking industry through the lens of network automation and orchestration.

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The post NTC – A Chat With Jason Edelman appeared first on Network Collective.

SD-WAN has been one of the most hyped technologies in a long time but as the hype settles out and real world deployments start to take shape, the picture is becoming clearer on what SD-WAN is and is not. In this episode we take a look at the original promises, where we are today in relation to those promises, and what SD-WAN might look like in the years to come.

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The post The Future of SD-WAN appeared first on Network Collective.

Networking Conferences play a big role in many of our professional lives and Cisco Live is the biggest one when it comes to networking. This year being what it is, we’re seeing our favorite in person events being transformed into virtual, online-only events. Considering how much community can play a role in how these events make an impact, we figured we would wax nostalgic on past events, share some favorite memories, and explore how this one event came to be significant for so many of us.

Rather than a single continuous conversation made up of a group of talking heads, we’ve recorded this episode in segments. Each one focusing on one person’s experiences with the conference. Also, due to the length, we’ve split this episode into two parts. This is part 2. Part 1 should also be available in your podcatcher, or if you’re listening to this on our website you can find part 1 here.

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The post Cisco Live: A Look Back – Part 2 appeared first on Network Collective.

Networking Conferences play a big role in many of our professional lives and Cisco Live is the biggest one when it comes to networking. This year being what it is, we’re seeing our favorite in person events being transformed into virtual, online-only events. Considering how much community can play a role in how these events make an impact, we figured we would wax nostalgic on past events, share some favorite memories, and explore how this one event came to be significant for so many of us.

Rather than a single continuous conversation made up of a group of talking heads, we’ve recorded this episode in segments. Each one focusing on one person’s experiences with the conference. Also, due to the length, we’ve split this episode into two parts. This is part 1. Part 2 should also be available in your podcatcher, or if you’re listening to this on our website you can find part 2 here.

Outro Music: Danger Storm Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/

The post Cisco Live: A Look Back – Part 1 appeared first on Network Collective.

The increased rate of change in networking isn’t just impacting the operational models used to run networks. Network security posture, infrastructure, and operations are having to adapt quickly as well. In this episode we sit down with Henry Jiang, CISO of Diligent Corporation, to talk about how security is adapting to current infrastructure trends.

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The post NTC – Security and Networking appeared first on Network Collective.

Have you ever wondered how emergency communications get re-established after major disasters? Who are the people who rush in to enable first responders to do their jobs efficiently in the most trying of circumstances. In this episode we talk with Dustin Li and Andrew White of ITDRC (Information Technology Disaster Resource Center) to find out exactly what it takes to use technology in disaster response and why it is so important.

You can learn more about what ITDRC is doing as well as help out the cause at the following locations:

• https://itdrc.org/
• https://itdrc.org/projectconnect
• https://itdrc.org/donate
• https://volunteer.itdrc.org

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The post Using Technology In Disaster Response appeared first on Network Collective.

The network automation community is continuously expanding and evolving. This can make it challenging to get a feel for where you are at on the automation journey. To shed some light on the current state of network automation, the NetDevOps survey was created. It’s an independent survey of network practitioners that collects information about the state of NetDevOps in the real world. As you might expect, it reveals some interesting trends within the community. In this episode we speak with the organizers of the NetDevOps survey to discuss how it came to be and some of the interesting results from the 2019 report.

2019 NetDevOps Survey Report

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The post NTC – NetDevOps Report appeared first on Network Collective.

I always enjoy an opportunity to talk about the ins and outs of what it’s like to do networking in industries that don’t follow the typical enterprise models. In today’s episode we’re doing just that. Brian Martin, from the Twitch network engineering team, is joining us to talk about what it’s like to run a network where the primary product is real-time streaming video. If you, like me, are interested in hearing what it takes to make a service like Twitch run, this episode is for you.  

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The post A Peek Into Content Delivery Networks appeared first on Network Collective.

We find ourselves recording this in the middle of the coronavirus pandemic and I have to be honest that it’s been a bit challenging finding motivation to talk about networking when there’s so many other important things on people’s minds. I mean, who really cares about networking at a time like this? But as I started thinking about that very question the reality hit me, it’s everyone. Everyone cares about networking at a time like this because everyone, young and old, is using technology, networking, and specifically the Internet to hold on to whatever normalcy they can in these crazy times. The fact is that networking, and other core infrastructure skill sets have never been more important than they are right now. The real question I was challenged with wasn’t who cares about networking at a time like this, it’s who cares about a networking podcast at a time like this. I imagine some do, and some don’t, but we’re going to take today’s episode a bit lightly and just talk about what’s top of mind. We hope you’ll listen along. 

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The post Who Cares About Networking At A Time Like This appeared first on Network Collective.

Technology is only a small piece of the automation puzzle and automation efforts often require adjustments or updates to the ways companies do their day to day work. Today we’re continuing our focus on Network Automation and Programmability by talking about Navigating Enterprise Process during automation projects.

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The post NTC – Navigating Enterprise Process appeared first on Network Collective.

Cisco leads the industry when it comes to respected and valued IT infrastructure certification paths and last month Cisco made some significant changes to the way they do certifications. In today’s episode we discuss some of these changes and what the implications are for those of us pursuing new Cisco certifications or maintaining the certifications we already hold.  

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The post A New Path For Certifications appeared first on Network Collective.

In this inaugural episode of Network To Code on Network Collective, Jeremy Stretch, John Anderson, Rick Sherman, and Jordan Martin meet up around the virtual roundtable to discuss what a source of truth is, how it can play a critical role in your network automation efforts, and how the open source project NetBox might fill that role in your network.

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The post NTC – Source Of Truth appeared first on Network Collective.

It’s not illogical to argue that since we all use the same networking technologies that all networks are essentially the same. Routing protocols, layer two technologies, and overlays all behave the same whether they are run in SOHO, enterprise, or service provider environments. That being said, it feels like there can be worlds of difference between the application of these technologies in different environments. In this episode Nick Buraglio, Kevin Myers, and I discuss just how interchangeable these technologies are and why it feels like engineers who work on the same technologies can feel worlds apart when their paths intersect.

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The post Are All Networks Created Equal? appeared first on Network Collective.

In today’s iteration of the Network Collective Community Roundtable, I join Kevin Myers and Darrel Clute to talk about what’s on their minds and whether or not the WAN as we know it is a thing of the past. Hardware independent software overlays are becoming more popular but does this mean that traditional WAN is going away? Hear what Keven, Darrel, and I have to say about it on this episode.

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The post The End Of WAN As We Know It? appeared first on Network Collective.

In this episode we sit down with Jed Casey and Bruno Wollmann to have a conversation about what’s top of mind. We take a quick look back at predominant trends in 2019, pull out the crystal ball and make some predictions for 2020, and discuss certifications and learning as engineers.

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The post A Look Back, Some Predictions, And Learning As Engineers appeared first on Network Collective.

It’s been a while but we’re back and it feels great. In this episode I talk about the status of the show, where the heck I’ve been, and where we are headed. I also share my personal story on burnout and some of the lessons I learned along the way.

In the episode I mention the fantastic Denise Fishburn and a video she did on burnout that helped me realize what I was dealing with. That video is embedded below.

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The post We’re Back appeared first on Network Collective.

Terry Slattery has a distinguished career in networking and is well known for his contributions to the Cisco CLI, being the second person to obtain the CCIE, providing consultation to many organizations, and the list goes on. If it’s happened in networking, there’s a very good chance that Terry has experience in it. Today Terry joins us to to talk about how he got started into networking and how he’s navigated a very successful career in networking.

The post Community Spotlight – Terry Slattery appeared first on Network Collective.

At different points in our careers it can be difficult to ask for help. Maybe the expectation is that your customer is paying for expertise and you have to demonstrate it. Maybe it’s just embarrassing to admit when you don’t know something. Nobody can know it all though, so knowing when and how to ask for help will save you trouble and pain in your career. Listen in as Kevin Myers shares his thoughts on when, where, and how to ask for help.

The post Lessons Learned – Asking For Help – Kevin Myers appeared first on Network Collective.

As the networking world continues to embrace automation and orchestration, some of the terms used to explain this new way of doing things remain a little fuzzy. In today’s episode we’re going to look specifically at Infrastructure as Code and by the end we hope to define what it is as well as what it is not, provide some relevant examples of it in action, and clear up as much confusion as possible about what it means to network engineers.  

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The post Infrastructure As Code 101 appeared first on Network Collective.

Today’s Network Collective Community Spotlight is highlighting Kevin Myers. Kevin is an accomplished engineer working in some of the more complicated and advanced corners of the Internet. Join us as we take a look into how Kevin got his start in networking and how he ended up working on some pretty interesting technology.

The post Community Spotlight – Kevin Myers appeared first on Network Collective.

There’s always something to learn from other people’s stories so we’re making it a point to spend time talking about past experiences and lessons learned. In this first foray into this format, Nick Russo joins us to talk about a formative leadership experience that happened early in his career and changed his perspective on what leadership and failure looked like.

The post Lessons Learned – Nick Russo – Leadership appeared first on Network Collective.

In this episode Jordan shares his thoughts on some of the nuanced differences between simple, complicated, and complex network designs. These are terms and descriptions that get thrown around a lot in our industry but do you really understand what they are or how they should impact your design?

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The post Simple Complicated Complexity appeared first on Network Collective.

Today we’re introducing a new twist to the Network Collective Short Take, the community spotlight. One of the reoccurring themes in the listener survey was that you get to hear a lot about what our guests know but don’t get to know anything about them or how they came to have the knowledge that they do. This is an easy problem to fix so occasionally we’ll be profiling individuals in the industry who are doing good work. Today, that individual is Nick Russo. Nick has been a long time contributor to Network Collective and has participated in some of our most popular episodes. Listen in as we talk about how Nick Russo got his start in networking and how his journey brought him to where he is today.

The post Community Spotlight – Nick Russo appeared first on Network Collective.

Many people look forward to the day that they can quit the day job and become their own boss. In this episode we chat with Jody Lemoine and Bruno Wollmann, two people who have done just that, to discuss some of the lessons learned as they transitioned into independent self-employment in the networking space.

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The post Going Independent appeared first on Network Collective.

Tunnels and overlays are all the rage in software-defined networking but 128 Technology thinks there is a better way forward. Without tunnels or overlays, 128 can provide all the features you’ve come to expect from an SD-WAN solution and more. Listen in if you would like to hear how they can do all of this without encapsulation, offering far smaller overhead yet still keeping your data secure in transit. Once you’ve watched the overview here, you can find an even deeper dive into their technology at their website https://128technology.com or you can view the full day Networking Field Day Exclusive event recordings at http://tnc.li/128tech

Thank you to 128 Technology for sponsoring today’s episode and supporting the content we’re creating here at Network Collective.

The post [Sponsored] No Tunnels – No Overlays – All The Secure Routing – 128 Technology appeared first on Network Collective.

The idea of a 10x engineer is just too good to be true. In this Short Take I take a look at the recent controversy and share my thoughts about the twitter thread that sparked it all. Here’s a hint, there’s no such thing as a 10x engineer but there are some things to be learned from what the author had to say.

The post 10x Engineers – Don’t Believe The Hype appeared first on Network Collective.

Cloudflare come out strong, pointing the finger at Verizon for shoddy practices putting the Internet at risk. It didn’t take long for karma to come around and for Cloudflare to have their own Internet impacting outage from a mistake of their own. In this episode we talk about that outage, the risk of centralization on the Internet, managing MSPs when trouble strikes, and whether or not agile processes are forgoing security in favor of faster releases.

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The post Cloudflare’s Karma, Managing MSPs, & Agile Security appeared first on Network Collective.

Community is a valuable thing and conferences are a great place to take community to the next level. In this short take I talk with Kern Celestine about his first time experience at Cisco Live and how being introduced to the community there impacted his perception of this industry.

The post Conferences and Community appeared first on Network Collective.

Another week, another BGP hijack. This time a steel company in western Pennsylvania got surprised with a sizable portion of the Internet’s traffic. In this Network Collective short take, Nick Buraglio joins me to talk about the recent BGP blunder, its causes, some of the reactions, and discuss the BGP optimization tool that sparked the whole issue.

Relevant BGP Security episode with Geoff Houston.

The post BGP Blunder appeared first on Network Collective.

The initial hype of SD-WAN claimed that MPLS was dead as SD-WAN was going to remove all need for SLA based circuits. Now that we’re several years in and have some experience under our collective belts, we take a look at whether or not the original hype was correct and what real world customers are doing when it comes to selecting circuits for their SD-WAN networks.

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The post MPLS is dead, Long live MPLS appeared first on Network Collective.

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The post History Of ATM (Part 2) – Daniel Grossman appeared first on Network Collective.

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The post History Of ATM (Part 1) – Daniel Grossman appeared first on Network Collective.

Is the traditional networking hardware/software dynamic broken? Do monolithic network stacks make your infrastructure fragile and difficult to manage? In this episode we speak with SnapRoute’s Glenn Sullivan and Adam Casella about how they are looking to change that with their cloud native network operating system. Built from the start on a modern microservices architecture, SnapRoute aims to improve network agility and remove fragility from your infrastructure. Listen in as we talk about the details of this interesting new approach to networking.

Thank you to SnapRoute for sponsoring today’s episode and supporting the content we’re creating here at Network Collective. Please take a moment to head over to https://snaproute.com to learn more about how SnapRoute can improve your network infrastructure.

The post [Sponsored] Cloud Native Networking with SnapRoute appeared first on Network Collective.

In this episode we take a look at the gradual shift to subscription based licensing, how 5g could potentially set back weather radar 30+ years, and a conversation about the hype cycle in networking.

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The post Subscription Licensing, The 5g Time Machine & The Trough Of Disillusionment appeared first on Network Collective.

In this Short Take, Russ compares overlays and service meshes/service fabrics as they relate to network engineering as well as identifying where each might be used.

The post Short Take – Service Fabrics appeared first on Network Collective.

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The post History Of The Internet From An Asian Perspective – Kilnam Chon appeared first on Network Collective.

In this Network Collective Short Take, Russ White and Tom Ammon talk through different types of Internet peering and how they are used.

The post Short Take – Peering and Resources in the DFZ appeared first on Network Collective.

We’re going back to our roots here at Network Collective and that means we’re going to be spending more time chatting and less time with agendas. In this episode we discuss Russ’s impression of ONUG 2019 in Dallas, the team’s take on solving problems in a meeting, the value of meetings in general, and the slow but steady rise of SDN adoption in the enterprise.

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The post Meeting Madness, ONUG, and Software Defining All The Things appeared first on Network Collective.

In this Short Take, Russ White and Tom Ammon chat about use of BGP communities in the default free zone.

The post Short Take – BGP Communities In The DFZ appeared first on Network Collective.

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The post History Of Networking – Pseudowires – Luca Martini appeared first on Network Collective.

GDPR, the European data protection regulation that went into effect last year, was put into place to protect EU citizens from the misuse of their identifying personal information. While a positive step forward for many, it has had some unintended consequences for fundamental Internet systems and services. In this episode we take a look at how GDPR and Internet privacy regulation effects the Internet.

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The post Episode 50 – GDPR appeared first on Network Collective.

In this Network Collective Short Take, Russ shares some best practice around NTP.

The post Short Take – NTP Best Practices appeared first on Network Collective.

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The post History Of Networking – MIME – Nathaniel Borenstein appeared first on Network Collective.

Many tools we use in our work lives have customizations available that most simply don’t even look in to. In this Short Take, Russ makes the case for tool customization and how it can make you more efficient in your day to day tasks.

The post Short Take – Customizing Your World appeared first on Network Collective.

Mentorship can have a significant impact on early career development and in this episode we sit down to talk about what you can expect from the mentorship process, how to find a mentor, and how to be a mentor.

We would like to thank Cumulus Networks for sponsoring this episode of Network Collective.  Cumulus Networks makes networking software for the open, modern data center. It’s the only open networking software that allows you to affordably build and efficiently operate your network like the worlds largest data center operators. Cumulus also just launched a brand new certification program offering free resources, on-demand modules, live training, and a certifications exam. If you would like to learn more you can head on over to https://cumulusnetworks.com/certified

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The post Episode 49 – Mentorship appeared first on Network Collective.

In this Short Take, Russ discusses a couple tools we have in the network for DDoS mitigations and explores some of the reasons they may not be as pervasively used as we would like.

The post Short Take – Flowspec and BCP38 appeared first on Network Collective.

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The post History Of Networking – DECnet – David Oran appeared first on Network Collective.

In this Network Collective Short Take, Matt Oswalt joins us to talk about the value of network reliability engineering and the unique approach Juniper is taking to empower engineers to learn the tools and techniques of automation with NRE Labs.

Thank you to Juniper Networks for sponsoring today’s episode and supporting the content we’re creating here at Network Collective. If you would like to take the next steps in your automation journey, NRE Labs is a no-strings-attached resource to help you in that journey. You can find NRE Labs at https://labs.networkreliability.engineering.

The post [Sponsored] Short Take – Network Reliability Engineering appeared first on Network Collective.

Internet BGP Peering relationships are a complicated mix of competing and complimentary motivations. In this Network Collective Community Roundtable we dive in to the world of public BGP peering to discuss how it works in the real world and when it might make sense for your organization to consider getting involved as well.

We would like to thank Cumulus Networks for sponsoring this episode of Network Collective.  Cumulus Networks makes networking software for the open, modern data center. It’s the only open networking software that allows you to affordably build and efficiently operate your network like the worlds largest data center operators. Cumulus Networks wants you to build something epic. Whether you’re scaling your data center network or designing the next “big thing,” you have your sights set on building something that matters. To do that, you’ll need to use the absolute best resources. If you would like to learn more about how Cumulus Networks can help you build something epic, you should check out https://cumulusnetworks.com/epic

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The post Episode 48 – BGP Peering In The Real World appeared first on Network Collective.

DNS servers tend to be large and powerful machines with asymmetric traffic patterns. This leads to them being excellent tool for DDoS amplification attacks. In this Short Take, Russ takes a look at how DNS amplification works and some of the mitigating factors that can be taken to reduce the risk.

The post Short Take – DNS Challenge And Response appeared first on Network Collective.

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The post History Of Networking – OpenConfig – Anees Shaikh and Rob Shakir appeared first on Network Collective.

In this Network Collective Short Take, Russ shares his thoughts on the practical and economical motivators for open source software and how reality is likely somewhat different from perception.

The post Short Take – Open Source appeared first on Network Collective.

Many routing experts believe that segment routing provides significant advantages over MPLS, and more specifically MPLS Traffic Engineering (MPLS-TE). In this episode we take a look at some of the foundational concepts used in segment routing and some of the differentiators between it and MPLS.

• RFC 8402 – Segment Routing Architecture
• IETF Draft – Segment Routing with MPLS Data Plane
• IETF Draft – Segment Routing interworking with LDP
• IETF Draft – PCEP Extensions for Segment Routing
• IETF Draft – OSPF Extensions for Segment Routing
• IETF Draft – IS-IS Extensions for Segment Routing
• RFC 8476 – Signaling Maximum SID Depth (MSD) Using OSPF
• RFC 8491 – Signaling Maximum SID Depth (MSD) Using IS-IS
• NANOG Presentation on Maximum SID Depth
• J-RENS Presentation on Segment Routing Experience at ESnet

We would like to thank Cumulus Networks for sponsoring this episode of Network Collective.  Cumulus Networks makes networking software for the open, modern data center. It’s the only open networking software that allows you to affordably build and efficiently operate your network like the worlds largest data center operators. Your company’s success depends on your ability to “future-proof” your network so why would you choose old, legacy infrastructure to stay ahead of your company’s needs? If you would like to learn more you can head on over to https://cumulusnetworks.com/modern

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The post Episode 47 – Introduction To Segment Routing appeared first

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The post History Of Networking – Cisco CLI – Terry Slattery and Rob Widmer appeared first on Network Collective.

Last month, Networking Field Day 20 happened in Silicon Valley and our very own Jordan Martin attended the event as a delegate. In this Off the Cuff episode of Network Collective, we sit down with some of the other delegates at NFD20 and talk about our impressions of the event’s general themes and presentations.

The vendors who presented at the event were:

• Netrounds
• Kemp Technologies
• Juniper Networks
• Nokia
• SnapRoute
• Nyansa
• Extreme Networks
• VMware
• Fortinet
• PathSolutions
• 128 Technology

To find out more about Networking Field Day and the other great Field Day events, head on over to https://techfieldday.com

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The post Off the Cuff – NFD20 Wrap Up appeared first on Network Collective.

Historically, engineers and practitioners have had a hard time communicating IT’s value to business leadership. This gap between IT and the business will present even greater challenges as businesses grow to depend on their networks and systems for even more strategic advantage. In this episode we explore some of the reasons why this gap exists and discuss some potential things you can do to help bridge the gap between IT engineering and business leadership.

We would like to thank Cumulus Networks for sponsoring this episode of Network Collective.  Cumulus Networks makes networking software for the open, modern data center. It’s the only open networking software that allows you to affordably build and efficiently operate your network like the worlds largest data center operators. Cumulus also just launched a brand new certification program offering free resources, on-demand modules, live training, and a certifications exam. If you would like to learn more you can head on over to https://cumulusnetworks.com/certified

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The post Episode 46 – Bridging The Gap Between IT And The Business appeared first on Network Collective.

In and industry where technology seems to change overnight sometimes, how should you decide what you should and shouldn’t invest time in? Are there techniques you can use to optimize navigating technology change? In this Short Take, Russ shares his take on how you should analyze new technologies and intelligently approach new tech to not be ahead or behind of the curve.

The post Short Take – Navigating Technology Change appeared first on Network Collective.

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The post History Of Networking – MPLS-TE – George Swallow appeared first on Network Collective.

In this Short Take, Russ discusses what DNS CAA records are and theorizes how their more pervasive use could nearly mitigate MITM HTTPS interception in the wild.

The post Short Take – CAA Records and Site Security appeared first on Network Collective.

After years of lofty promises concerning the next generation of cellular technology, Network Collective sits down with Hayim Porat and Andreas Hegers from ECI to break down the hype and understand the true implications of 5g networks.

We would like to thank VIAVI Solutions for sponsoring this episode of Network Collective. VIAVI Solutions is an application and network management industry leader focusing on end-user experience by providing products that optimize performance and speed problem resolution. Helping to ensure delivery of critical applications for businesses worldwide, Viavi offers an integrated line of precision-engineered software and hardware systems for effective network monitoring and analysis. Learn more at www.viavisolutions.com/networkcollective.

We would also like to think PathSolutions for sponsoring this episode of Network Collective. PathSolutions TotalView is designed to automatically dig deep into network devices to learn what they know about your network’s performance. This means your network is no longer full of mysteries because you know everything your network knows. Try TotalView on your network, and it will show you 5 things about your network that you didn’t previously know. You can find out more about PathSolutions at https://www.pathsolutions.com/

Outro Music: Danger Storm Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/

The post Episode 45 – Understanding The Implications Of 5g appeared first on Network Collective.

In this Network Collective Short Take, Russ White shares what a long-tail denial of service attack is and why network engineers need to be thinking about them when designing their networks.

The post Short Take – Long-Tail DoS Attacks appeared first on Network Collective.

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The post History Of Networking – The Internet – Dave Farber appeared first on Network Collective.

The spectre and meltdown vulnerabilities took advantage of deficiencies in processor caching mechanisms. In this Network Collective Short Take, Russ White talks through how these attacks work and what further implications there may be in speculative processor cacheing.

The post Short Take – Cache Covert Channel appeared first on Network Collective.

IT Certifications. Do you have one? Should you get one? Which certifications should you pursue? How much of your life should you turn over to certification study? Join the Network Collective team as we chat with Tom Hollingsworth and Jed Casey about the value of certifications.

We would like to thank VIAVI Solutions for sponsoring this episode of Network Collective. VIAVI Solutions is an application and network management industry leader focusing on end-user experience by providing products that optimize performance and speed problem resolution. Helping to ensure delivery of critical applications for businesses worldwide, Viavi offers an integrated line of precision-engineered software and hardware systems for effective network monitoring and analysis. Learn more at www.viavisolutions.com/networkcollective.

We would also like to think PathSolutions for sponsoring this episode of Network Collective. PathSolutions TotalView is designed to automatically dig deep into network devices to learn what they know about your network’s performance. This means your network is no longer full of mysteries because you know everything your network knows. Try TotalView on your network, and it will show you 5 things about your network that you didn’t previously know. You can find out more about PathSolutions at https://www.pathsolutions.com/

Outro Music: Danger Storm Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/

The post Episode 44 – The Value Of Certifications appeared first on Network Collective.

In this Network Collective Short Take, Russ and Eyvonne share their thoughts on some of the things you should consider learning in 2019.

The post Short Take – Things To Learn In 2019 appeared first on Network Collective.

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The post History Of Networking – ILNP and IP Mobility – Saleem Bhatti appeared first on Network Collective.

Calculating best path can be a complex process in many typologies. In this Network Collective Short Take, Russ shares how routers process BGP updates and the intricacies of how those routes are shared with peers.

The post Short Take – Duplicate BGP Updates appeared first on Network Collective.

In this episode of the Network Collective Community Roundtable, the panel discusses the nuances of getting your organization connected to the internet. Is it as simple as connecting a cable and calling it a day, or is there more to think about when designing your Internet edge? Joining the Network Collective team for this conversation is Dr. Pete Welcher and Tom Ammon.

We would like to thank VIAVI Solutions for sponsoring this episode of Network Collective. VIAVI Solutions is an application and network management industry leader focusing on end-user experience by providing products that optimize performance and speed problem resolution. Helping to ensure delivery of critical applications for businesses worldwide, Viavi offers an integrated line of precision-engineered software and hardware systems for effective network monitoring and analysis. Learn more at www.viavisolutions.com/networkcollective.

We would also like to think PathSolutions for sponsoring this episode of Network Collective. PathSolutions TotalView is designed to automatically dig deep into network devices to learn what they know about your network’s performance. This means your network is no longer full of mysteries because you know everything your network knows. Try TotalView on your network, and it will show you 5 things about your network that you didn’t previously know. You can find out more about PathSolutions at https://www.pathsolutions.com/

Outro Music: Danger Storm Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/

The post Episode 43 – Peering With Providers appeared first on Network Collective.

HTTPS was created to ensure end to end encryption of web traffic but both good guys and attackers circumvent this with man-in-the-middle interception. In this Short Take, Russ talks about some of the mechanics of HTTPS interception as well as some implications of doing it intentionally.

The post Short Take – HTTPS Interception appeared first on Network Collective.

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The post History Of Networking – WHOIS – Mark Kosters appeared first on Network Collective.

It this Network Collective Short Take, Russ White discusses security considerations when deploying and operating IPv6.

The post Short Take – IPv6 Security Considerations appeared first on Network Collective.

There’s no doubt that Software-Defined Wide Area Networking is one of the most hyped technologies we’ve seen recent history. From cost savings to unprecedented simplicity, no claim seemed to be off limits when it came to controller driven networks. Now that’s it’s 2019 and some of the dust is settling we wanted to have a chat with a couple of engineers who have been in the thick of it and know what it’s really like to design, implement, and operate Software-Defined WANs.

We would like to thank VIAVI Solutions for sponsoring this episode of Network Collective. VIAVI Solutions is an application and network management industry leader focusing on end-user experience by providing products that optimize performance and speed problem resolution. Helping to ensure delivery of critical applications for businesses worldwide, Viavi offers an integrated line of precision-engineered software and hardware systems for effective network monitoring and analysis. Learn more at www.viavisolutions.com/networkcollective.

We would also like to think PathSolutions for sponsoring this episode of Network Collective. PathSolutions TotalView is designed to automatically dig deep into network devices to learn what they know about your network’s performance. This means your network is no longer full of mysteries because you know everything your network knows. Try TotalView on your network, and it will show you 5 things about your network that you didn’t previously know. You can find out more about PathSolutions at https://www.pathsolutions.com/

Outro Music: Danger Storm Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/

The post Episode 42 – SD-WAN Beyond The Hype appeared first on Network Collective.

In the first Network Collective Short Take of 2019 – Russ White sits down with Matt Oswalt to discuss his take on chaos engineering.

The post Short Take – Chaos Engineering appeared first on Network Collective.

Outro Music: Danger Storm Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – EVPN – Rahul Aggarwal appeared first on Network Collective.

Complexity is a reality for most modern networks but unnecessary complexity can do more harm than good. In this Network Collective Short Take, Russ and Eyvonne talk through the consequences of enabling new features and share their insight on when you should, and when you shouldn’t, reach for the infamous nerd knobs.

The post Short Take – Nerd Knobs appeared first on Network Collective.

If you’ve been in networking for any time, you’ve likely had to lab something up to learn a new technology or study for a certification, but labs can be so much more than learning tools. In today’s episode Jody Lemoine and Iain Leiter join Network Collective to talk about practical uses for labs outside of the classroom.

We would like to thank VIAVI Solutions for sponsoring this episode of Network Collective. VIAVI Solutions is an application and network management industry leader focusing on end-user experience by providing products that optimize performance and speed problem resolution. Helping to ensure delivery of critical applications for businesses worldwide, Viavi offers an integrated line of precision-engineered software and hardware systems for effective network monitoring and analysis. Learn more at www.viavisolutions.com/networkcollective.

Jordan Martin

Host

Russ White

The post Short Take – Recent Changes In LSR Protocols appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Bill Yeager – Routing Software appeared first on Network Collective.

In this Network Collective community roundtable episode, Nick Russo and Jeff Tantsura join us to close out our MPLS series with an episode on Fast Reroute.

We would like to thank VIAVI Solutions for sponsoring this episode of Network Collective. VIAVI Solutions is an application and network management industry leader focusing on end-user experience by providing products that optimize performance and speed problem resolution. Helping to ensure delivery of critical applications for businesses worldwide, Viavi offers an integrated line of precision-engineered software and hardware systems for effective network monitoring and analysis. Learn more at www.viavisolutions.com/networkcollective.

Jordan Martin

Host

Russ White

The post Short Take – BGP Optimal Route Reflection appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
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The post History Of Networking – JR Rivers – Linux Routing appeared first on Network Collective.

The post Short Take – Policy At The Edge appeared first on Network Collective.

We’ve had a lot going on behind the scenes at Network Collective. In this episode we give a little peak behind the curtain at what’s been going on with us and share some of the ways we’re modifying the show in response to how you all are consuming it.

Jordan Martin

Host

Eyvonne Sharp

Host

Russ White

Host

The post Short Take – Thinking Differently appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Bob Hinden – IPv6 appeared first on Network Collective.

Russ White

The post Short Take – DNSSEC Deployment appeared first on Network Collective.

In this Community Roundtable episode of Network Collective, Roland Dobbins and Nick Buraglio join us to talk about the current state of DDoS on the Internet and some strategies you can use to mitigate these risks on your network.

Roland Dobbin’s shared folder of DDoS presentations: https://app.box.com/s/4h2l6f4m8is6jnwk28cg

Nick Buraglio’s post on Black Hole routing: https://www.forwardingplane.net/2011/10/black-hole-routing/

Nick Buraglio’s presentation on Best Practices For Securing the Science DMZ:  http://www.youtube.com/watch?v=IPh3aZ18IuY

We would like to thank VIAVI Solutions for sponsoring this episode of Network Collective. VIAVI Solutions is an application and network management industry leader focusing on end-user experience by providing products that optimize performance and speed problem resolution. Helping to ensure delivery of critical applications for businesses worldwide, Viavi offers an integrated line of precision-engineered software and hardware systems for effective network monitoring and analysis. Learn more at www.viavisolutions.com/networkcollective.

The post [Sponsored] Short Take – Viavi Solutions appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Yuval Bachar – Backpack And The History Of Whitebox Routers appeared first on Network Collective.

Russ White

The post Short Take – Problems And Solutions appeared first on Network Collective.

Join us as we share a peek behind the curtain on some content created exclusively for our Network Collective community members. In this episode, the Network Collective hosts share their thoughts on imposter syndrome and some of the ways they work through this fairly common condition.

We would like to thank VIAVI Solutions for sponsoring this episode of Network Collective. VIAVI Solutions is an application and network management industry leader focusing on end-user experience by providing products that optimize performance and speed problem resolution. Helping to ensure delivery of critical applications for businesses worldwide, Viavi offers an integrated line of precision-engineered software and hardware systems for effective network monitoring and analysis. Learn more at www.viavisolutions.com/networkcollective.

Jordan Martin

Host

Eyvonne Sharp

Host

<

Russ White

The post Short Take – The Diminishing Returns of Harder Passwords appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
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The post History Of Networking – Jana Iyengar – QUIC appeared first on Network Collective.

Russ White

The post Short Take – It’s Always Been Done That Way appeared first on Network Collective.

In this community roundtable episode George Michaelson, Ed Horley, and Leslie Daigle join Network Collective to talk about the current state of IPv6 deployment.

Jordan Martin

Host

Russ White

Host

Russ White

The post Short Take – BGP Peering Updates appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – John Fraizer – BGP Route Servers appeared first on Network Collective.

The post [Sponsored] Short Take – Anuta Networks appeared first on Network Collective.

IT staffing budgets are shrinking and consequently many organizations are forgoing having strong engineering talent on staff. In this episode we explore the dynamics of staffing good engineers and whether or not it’s possible to remove that cost in modern networks.

Jordan Martin

Host

Eyvonne

Russ White

The post Short Take – Time Management appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Mike Sullenberger – DMVPN appeared first on Network Collective.

Russ White

The post Short Take – PFAT Trees appeared first on Network Collective.

Traffic engineering is one of the most complex topics in network design and operation. Join us in this episode of the Network Collective as we discuss the concepts and tradeoffs in traffic engineering using MPLS.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
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The post Episode 34 – MPLS Part 3 – Traffic Engineering appeared first on Network Collective.

Russ White

The post Short Take – Learn to Think appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
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The post History Of Networking – Terry Slattery and Bruce Pinsky – The CCIE appeared first on Network Collective.

Russ White

The post Short Take – State Optimization Surface appeared first on Network Collective.

Conventional wisdom tells us that a network that never breaks is the most resilient, but practice tells us otherwise. In this episode we explore the value of chaos engineering and how breaking your network intentionally can make it stronger.

Jordan Martin

Host

Eyvonne Sharp

Host

The post [Sponsored] Short Take – Forward Networks appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
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The post History Of Networking – Ross Callon – MPLS appeared first on Network Collective.

Russ White

The post Short Take – Give The Monkey A Smaller Club appeared first on Network Collective.

Networking is hard enough when deploying it into typical environments like campuses and datacenters, but what happens when you’re tasked with doing networking in areas that were never meant to support technology? In this episode of Network Collective, Scott Morris and Jeremy Austin join us to share their experience with networking in harsh environments.

We would like to thank Cumulus Networks for sponsoring this episode of Network Collective. Cumulus is bringing S.O.U.L. back to the network. Simple. Open. Untethered. Linux. For more information about how you can bring S.O.U.L. to your network, head on over to https://cumulusnetworks.com/networkcollectivehassoul. There you can find out how Cumulus Networks can help you build a datacenter as efficient and as flexible as the worlds largest data centers and try Cumulus technology absolutely free.

Jordan Martin

Host

Russ White

The post Short Take – SDN Is Not Devops appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Vint Cerf – The Internet appeared first on Network Collective.

Russ White

The post Short Take – Education Is Useless? appeared first on Network Collective.

Security is facing a crisis of well trained engineers. As a result, operators are relying more heavily on analytics to provide security intelligence. In this show, Eric Osterweil joins Network Collective to discuss the use of analytics in security, and the role analytics can play to augment engineering talent.

We would like to thank Core BTS for sponsoring this episode of Network Collective. Core BTS focuses on partnering with your company to deliver technical solutions that enhance and drive your business. If you’re looking for a partner to help your technology teams take the next step, you can reach out to Core BTS by emailing them here.

We also would also like to thank Cumulus Networks for sponsoring this episode of Network Collective. Cumulus is bringing S.O.U.L. back to the network. Simple. Open. Untethered. Linux. For more information about how you can bring S.O.U.L. to your network, head on over to https://cumulusnetworks.com/ncautomation. There you can find out how Cumulus Networks can help you build a datacenter as efficient and as flexible as the worlds largest data centers and try Cumulus technology absolutely free.

Russ White

The post Short Take – Networks Without Operators appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Steve Crocker – The RFC Series appeared first on Network Collective.

The post [Sponsored] Short Take – Cumulus Networks appeared first on Network Collective.

Site Reliability Engineering is a concept that the networking world is coming to terms with. At Interop ITX 2018, Network Collective took the opportunity to sit down with Michael Kehoe to get his take on how SRE concepts can improve network operations.

Michael Kehoe

Guest

Jordan Martin

Host

Eyvonne Sharp

Host

In this episode of the Network Collective Community Roundtable, Tom Hollingsworth and Nick Buraglio join us again to expound on the topic of privacy in networking.

We would like to thank Core BTS for sponsoring this episode of Network Collective. Core BTS focuses on partnering with your company to deliver technical solutions that enhance and drive your business. If you’re looking for a partner to help your technology teams take the next step, you can reach out to Core BTS by emailing them here.

We also would also like to thank Cumulus Networks for sponsoring this episode of Network Collective. Cumulus is bringing S.O.U.L. back to the network. Simple. Open. Untethered. Linux. For more information about how you can bring S.O.U.L. to your network, head on over to https://cumulusnetworks.com/networkcollectivehassoul. There you can find out how Cumulus Networks can help you build a datacenter as efficient and as flexible as the worlds largest data centers and try Cumulus technology absolutely free.

Nick Buraglio

Guest

Russ White

The post Short Take – Complexity Sells appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Christian O’Flaherty – The Latin American Internet appeared first on Network Collective.

Russ White

The post Short Take – Culture and Technology appeared first on Network Collective.

In a continuation of our MPLS deep-dive series, Nick Russo, Russ White, Jordan Martin, and Eyvonne Sharp return to discuss some of the operational considerations when using MPLS VPNs.

We would like to thank Core BTS for sponsoring this episode of Network Collective. Core BTS focuses on partnering with your company to deliver technical solutions that enhance and drive your business. If you’re looking for a partner to help your technology teams take the next step, you can reach out to Core BTS by emailing them here.

We also would also like to thank Cumulus Networks for sponsoring this episode of Network Collective. Cumulus is bringing S.O.U.L. back to the network. Simple. Open. Untethered. Linux. For more information about how you can bring S.O.U.L. to your network, head on over to https://cumulusnetworks.com/networkcollectivehassoul. There you can find out how Cumulus Networks can help you build a datacenter as efficient and as flexible as the worlds largest data centers and try Cumulus technology absolutely free.

Show Notes:

1. When enterprise use the term “MPLS”, SP provided VPNS is often what they mean
2. Generally means a private WAN service, L2 or L3VPN
3. Quick packet walk (L3VPN only)
   1. CE sends IP packet to ingress PE
   2. Ingress PE performs lookup in FIB
   3. Ingress PE pushes labels in the order in which route recursion occurs
   4. Ingress PE sends to core
   5. Core routers lookup in LFIB for label swaps
   6. Egress PE receives from core
   7. Assuming PHP, egress PE consults LFIB
   8. Action is to remove all labels and send to CE
4. Overl

In this Short Take, Eyvonne explores how to think about your career trajectory and covers 5 questions you should ask yourself when planning your career.

Eyvonne Sharp

Host

The post Short Take – Thinking About Your Career Trajectory appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Dave Crocker – Email – Part 2 appeared first on Network Collective.

On June 4, 2018, Microsoft announced it will acquire GitHub for $7.5 billion.  What does this acquisition mean for developers, the projects that use GitHub, and the online community surrounding it?  Listen is as Network Collective discusses with this acquisition means for Microsoft, GitHub, and the many projects and developers that rely on GitHub.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post Off the Cuff – Microsoft Aquires GitHub appeared first on Network Collective.

In this Network Collective Short Take, Russ talks about practical concepts network engineers need to know to succeed in their careers.

Russ White

The post Short Take – Practical Career Advice appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Dave Crocker – Email – Part 1 appeared first on Network Collective.

When it comes to NAT, network engineers love it, they hate it, or the love to hate it. In this episode, Tom Hollingsworth and Nick Buraglio join us to talk about NAT, why it exists, and its continued role in networking.

We would like to thank Core BTS for sponsoring this episode of Network Collective. Core BTS focuses on partnering with your company to deliver technical solutions that enhance and drive your business. If you’re looking for a partner to help your technology teams take the next step, you can reach out to Core BTS by emailing them here.

Nick Buraglio

Guest

Tom Hollingsworth

Guest

In this Network Collective short take, Russ shares a story about his time as an electrical engineer and the lesson he learned from it about fixing the problem.

Russ White

The post Short Take – Fixing The Problem appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
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The post History Of Networking – Martin Casado – Software Defined Networking appeared first on Network Collective.

In this episode Russ White talks about how security absolutism is actually detrimental to securing important data and systems, and how shifting our view of security to a balance of tradeoffs would be a much better approach.

Russ White

The post Short Take – Security As A Tradeoff appeared first on Network Collective.

In this episode we’re changing things up a bit. Eyvonne, Russ, and Jordan come together to chat a bit about the past year and share some exciting news about where we are heading as a podcast. Thank you for making Network Collective possible and we’re looking forward to producing even more great content over the coming year.

Jordan Martin

Host

Eyvonne Sharp

Host

Russ White

Host

In this Short Take, Russ White shares his thoughts on the pros and cons of telecommuting and what you can do to be a better remote employee.

Russ White

The post Short Take – Telecommuting appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
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The post History Of Networking – Geoff Houston – BGP Security appeared first on Network Collective.

In this Network Collective Short Take, guest commentator Nick Buraglio shares his thoughts on field area networking after watching Cisco’s presentation on the topic at Networking Field Day 17. You can see the original NFD17 presentation here: https://vimeo.com/253197120

The post Short Take – Cisco Field Area Networking appeared first on Network Collective.

In this Network Collective Short Take, Russ White discusses how the subsidiarity principle can be applied to network design decisions.

Russ White

The post Short Take – The Subsidiarity Principle appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Tony Przygienda – History of BIER appeared first on Network Collective.

In this Short Take Russ White argues that the traditional seven layer model for network communication is antiquated and inadequate in explaining modern networking. He also proposes an alternative model and invites everyone to the eventual funeral of the OSI seven layer model.

Russ White

The post Short Take – Death Of The Seven Layer Model appeared first on Network Collective.

To celebrate the first anniversary of Network Collective, we invite a stellar panel of guests to share their networking war stories.  We discuss challenging outages, difficult problems, and what we’ve learned along the way.

Terry Slattery

Guest

Ethan Banks

Guest

Jordan Martin

Host

In this Network Collective Short Take, Russ White explores how disaggregation can be expanded to everyone’s favorite security appliance, the firewall.

Russ White

The post Short Take – Disaggregation and Firewalls appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Dino Farinacci – History of LISP appeared first on Network Collective.

In this Network Collective short take, Eyvonne discusses the role of a sales engineer.  She highlights the value sales engineers can bring to enterprises and outlines some ways you can get the most out of your relationship with your vendor or VAR sales engineer.

Eyvonne Sharp

Host

The post Short Take – In Defense of Sales Engineers appeared first on Network Collective.

In a new protocol deep-dive series, Nick Russo and Russ White return to discuss MPLS. In part one, we discuss the primary use cases for MPLS, label allocation, and what SD-WAN means for the future of MPLS.

Show Notes:

1. MPLS solves 3 fundamental problems, individually or in concert
   1. Multi-tenancy/VPNs
   2. Traffic engineering
   3. Fast reroute
2. 4 bytes in a shim header, technically not a label, but we call it that
   1. 20 bits for label value, 2^20 ~= 1 million values (this is important)
   2. 3 bits for EXP, QoS really
   3. 1 S-bit to signal bottom of stack
   4. 8 bits TTL
3. Label depth is theoretically infinite, but some HW platforms have a tolerance
4. Many ways to allocate labels
   1. LDP transport
   2. LDP pseudowire
   3. BGP labeled unicast
   4. BGP based IP VPNs (VPNv4/v6)
   5. BGP pseudowire
   6. SR (really built into OSPF and ISIS for distribution)
   7. RSVP-TE
5. Some forward rules are worth mentioning (basic LDP/BGP-LU environment)
   1. If route learned via IGP/static, LDP label must be used
   2. If route learned via BGP, BGP label must be used
   3. No exceptions
6. Penultimate Hop Popping: second to last hop removes topmost label when signaled with imp-null from last hop along a given LSP, saves a lookup
7. Is MPLS is a tunnel or not:
   1. Nick says always
   2. Russ says sometimes, depending on label depth
8. Dispel rumor: MPLS is a technology, not a service. It’s incorrect to ask “Will SD-WAN supplant MPLS?” This is akin to saying “Will pizza delivery service supplant water?” A more reasonable question would be “Will SD-WAN supplant private WANs?”

In this Network Collective short take, Jordan Martin shares his thoughts on the recent announcement from Cisco that they will be offering disaggregated solutions. Has Cisco seen the light? Will Cisco abandon hardware completely? Or are the doing all of this for other reasons?

Related Episodes:

• Off the Cuff – Disaggregation
• Episode 18 – Whitebox Networking

Jordan Martin

Host

The post Short Take – Cisco Disaggregation Announcement appeared first on Network Collective.

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Dinesh Dutt – Divergence of Compute and Networking appeared first on Network Collective.

The need for resiliency in network infrastructure is almost a given, but how do you get there? John Herbert, Jody Lemoine and Pete Welcher join the Network Collective team to talk through the complexities involved in a highly available infrastructure.

We would like to thank Cumulus Networks for sponsoring this episode of Network Collective. Cumulus is offering you, our listeners, a completely free O’Reilly ebook on the topic of BGP in the data center. You can get your copy of this excellent technical resource here: http://cumulusnetworks.com/networkcollectivebgp

John Herbert

Guest

Jody Lemoine

Guest

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post History Of Networking – Tony Li – SSE and Hardware Switching appeared first on Network Collective.

Miguel Villareal and Scott Wheeler come back and join Network Collective for a second episode, discussing the complexities involved in connecting to cloud infrastructure services and some strategies on how to mitigate them.

We would like to thank Cumulus Networks for sponsoring this episode of Network Collective. Cumulus invites you to find out more about how Linux is changing the data center networking space by downloading their free ebook “Linux Networking 101” here: http://cumulusnetworks.com/NetworkCollectiveLinux

Miguel Villareal

Guest

Scott Wheeler

Guest