Heavy Networking

By Packet PushersTechnology

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Heavy Networking episodes

July 12, 2019 Heavy Networking 459: Ignition Relaunch And Ethan’s New QoS Course
It’s been about a year since the Packet Pushers debuted Ignition, our membership site for professional development and as a way to support the Packet Pushers directly.
In that time we’ve learned a few things about running a paid membership site. I won’t say Ignition has been a failure. It’s also fair to say Ignition hasn’t been a roaring success. It’s been…meh. And “meh” isn’t what we want.
So, a redo is in order. Today’s podcast marks the official relaunch of Ignition. We talk about changes we’ve made to the site’s design, a new subscription scheme, new content, and what we plan to do going forward.
Big changes include getting rid of the free tier. Going forward, Ignition content will only be available for paid members ($99 a year). Free access is no longer available.
We’re also decoupling the Human Infrastructure newsletter from Ignition. Human Infrastructure is now a free, standalone newsletter. If you’re already a subscriber, you don’t have to do anything; you’ll continue to get each issue in your inbox.
If you’d like to get the newsletter, the sign-up page now lives on PacketPushers, along with an archive of every issue.
Last but not least, we’ve debuted a brand new course on QoS by Ethan Banks. This course, available only for paid Ignition members, contains more than three hours of instructional material on practical QoS.
Ethan covers practical information on the ToS byte, DSCP marketing strategies, shaping, policing, and more. The goal is to help you understand how to use QoS to solve network problems.
It’s presented in a modular format so you can consume it in manageable bites, and track your progress over time.
Ignition is still a work in progress. Over time we’ll continue to build our content library, including more instructional courses, new whitepapers, analytical blog posts, and more.
As always, we are truly thankful for the support we get from you, whether as a listener, reader, or Ignition member.
Sponsor: ExtraHop
ExtraHop is the enterprise cyber analytics company delivering performance and security from the inside out. ExtraHop offers complete visibility with machine learning to help you make quick, confident decisions about your IT environment. Explore the ExtraHop Performance Platform at extrahop.com/packetpushers.
Show Links:
Ignition
Subscribe To Human Infrastructure Magazine
45 min
July 09, 2019 Heavy Networking 458: SDN Federation – One Controller To Rule Them All?
Today’s show dives into the notion of SDN federation.
Any organization running a sufficiently-sized infrastructure is going to have a variety of software controllers for automation and orchestration.
You may have one in the data center, one for SD-WAN, one for security, one for wireless, and so on.
How do these software controllers federate? That is, how do they organize and coordinate to act in a unified manner to ensure that operational, policy, and security goals are met?
My guest is Rob Sherwood, an Internet researcher and open source enthusiast. The former CTO of the SDN startup Big Switch, Rob is currently a software engineer at Facebook.
We discuss:

* Whether all these controllers can and should be federated
* The technical and organizational barriers
* How to find a common language for each network silo
* How vendors are approaching the problem
* Whether a master controller can work
* How do we get interoperability? What’s the protocol?
* The role of analytics and visibility

Sponsor: ITProTV
Get over 65 hours of free technical training from ITProTV. ITProTV offers online instruction in CompTIA, Cisco, VMWare, Microsoft and more. You can stream courses live and on demand on your favorite device. Sign up for a free membership at itpro.tv/packet-pushers and try it with no obligation.
Sponsor: ThousandEyes
ThousandEyes gives you performance visibility from every user to every app over any network, both internal and external, so you can migrate to the cloud, troubleshoot faster and deliver exceptional user experiences. Sign up for a free account at thousandeyes.com/packetpushers and choose a free ThousandEyes t-shirt.
Show Links:
Rob Sherwood on LinkedIn
1 hr 11 min
July 07, 2019 Heavy Networking 457: The Future Of Networking With Dave Temkin And Steve Chalmers
Today is a wide-ranging Future of Networking episode with a pair of special guests: Dave Temkin, VP of Networks at Netflix; and Steve Chalmers, a former Distinguished Architect at HP and an independent consultant.
We discuss a broad range of topics and ideas, including how the public Internet is changing, edge computing, the challenges of recruiting the next generation of engineers, Gen Z fabrics, addressing BGP route leak issues, and more.
Sponsor: Tufin
Tufin has pioneered a policy-based approach to network security management using automation and analytics. You can make network changes in minutes instead of days, reliably and securely. Tufin. The Security Policy Company. Find out more at tufin.com.
Sponsor: ITProTV
Get over in-depth technical training from ITProTV. ITProTV offers online instruction in CompTIA, Cisco, VMWare, Microsoft and more. You can stream courses live and on demand on your favorite device. Sign up at itpro.tv/packet and save 25%. Use the code PACKET25 when you check out.
Show Links:
Steve Chalmers on LinkedIn
Dave Temkin on LinkedIn
BGP filtering study resources – NANOG
MANRS Implementation Guide – Online Version – manrs.org
Gen-Z – Wikipedia
Computer Industry Alliance Revolutionizing Data Access – Gen-Z Consortium
3D XPoint – Wikipedia
1 hr
June 28, 2019 Heavy Networking 456: How To Choose A Higher Ed Program For An IT Career
Today’s Heavy Networking explores how to select a higher-ed program for your computer science education, including what to look for and what to run away from.
How much is worth spending on education? Where do professional certifications fit into a degree program? How can you tell if the program you’re considering is outdated?
If your university has a job placement program, is that a big deal? What if you want to study networking specifically? Is that even a thing?
My guest is Aaron Francis, a Systems Engineer at Cisco and IT instructor.
We discuss:

* The essential elements of a computer science degree
* How a CS degree differs from degrees in Information Science or IT Administration
* Specializations within CS degrees, such as networking
* How to measure educational costs and returns, community college vs. 4-year instutions, and so on
* Getting a job after graduation
* Whether to get certifications concurrently with your degree

Sponsor: ExtraHop
ExtraHop is the enterprise cyber analytics company delivering performance and security from the inside out. ExtraHop offers complete visibility with machine learning to help you make quick, confident decisions about your IT environment. Explore the ExtraHop Performance Platform at extrahop.com/packetpushers.
Show Links:
Aaron Francis on LinkedIn
Aaron’s Blog on LinkedIn
1 hr 1 min
June 14, 2019 Heavy Networking 455: The Wonderful World Of Wireless – Beacons, Probes, SSIDs And More
You know your frame from your packet. You can explain how bridging tables are populated. Ethernet is your friend from as far back as 100 meg half duplex regularly plagued your life.
Wireless? Not so much. This is a second podcast in a crash course series explaining wireless networking to people who are really good at wired networks.
My guest is Chris Reed, lead network engineer at BEI Networks. Today, we dive into beacons, probes, SSIDs, roaming, and the ugly reality of band steering.
If you’d like to hear the first entry in this series, check out episode 440.
Show Links:
Chris Reed on Twitter
Clear To Send Podcast Episode 123 – Design Principles of Stadium Wi-Fi
Clear To Send Podcast Episode 127 – Stadium WiFi Implementation
SSID Overhead Calculator – Revolution Wi-Fi
Wi-Fi Roaming Analysis Part 2 – Roaming Variations – Revolution Wi-Fi
Heavy Networking 440: A Wireless Deployment Crash Course – Packet Pushers
51 min
June 07, 2019 Heavy Networking 454: Analyzing Encrypted Traffic In The TLS 1.3 Era With ExtraHop (Sponsored)
Deep packet analysis at line rate is a complex claim. What do we mean when we say, “Deep”? Assuming we mean layer 7 payloads…which protocols? Some of them? All of them?
What if the packet is encrypted? What if we’re a dual-stacked IPv4 and IPv6 network?
And what do we mean when we say, “Line rate”? We’re at speeds of 400Gbps now. So, which lines are we talking, and how many of them?
By the way, if we’re analyzing packets at line rate, where are we keeping them? Do we have to build a massive storage array?
None of these problems are new, and the more data we put on the network, the more challenging line rate deep packet inspection becomes. Today we take a stab at it with our sponsor ExtraHop.
Our guest is Mike Ernst, VP of Sales Engineering at ExtraHop. Mike has promised to put his engineering hat on today and keep his inner salesperson in the background.
We discuss:

* Commercial tools vs. Wireshark
* The packet capture architecture required to get “every packet and transaction”
* ExtraHop’s appliance family
* How ExtraHop gets packets from the public cloud
* Real-time analysis vs. investigating stored packets
* Differences among flow data, telemetry, and full packet capture
* How ExtraHop deals with encrypted traffic
* Why an agent is required to decrypt TLS 1.3 traffic

Show Links:
ExtraHop
ExtraHop.com/packetpushers
Follow ExtraHop on Twitter
46 min
June 04, 2019 Heavy Networking 453: BlueCat Networks Sinks DNS Claws Into Automation (Sponsored)
DNS, DHCP, and IPAM. That’s DDI. DDI systems work together to maintain sanity for your IP naming and addressing schemes.
If your idea of DDI tracking is a spreadsheet you update when you think of it, you’re not doing it all that well. And if you are trying to move into network automation, you’re really going to struggle trying to use a manual spreadsheet as a data source.
Our sponsor today is BlueCat Networks. BlueCat is a DDI platform that can help you get control of your IP addressing world, and is automation-friendly. In fact, BlueCat is announcing integrations with Cisco DNA and ACI, adding yet more functionality to the automation these systems already bring you.
Joining us today to talk about BlueCat Networks and automation is CTO Andrew Wertkin.
We discuss:

* BlueCat’s IPAM, DNS, and DHCP (DDI) platform
* Why and how DNS and IP addressing ties into enterprise automation
* How BlueCat works with third-party operational tools via APIs
* The role of IP infrastructure management in public cloud
* How operations and security teams can leverage DNS
* New integrations with Cisco DNA and ACI
* More

Show Links:
BlueCat Networks
BlueCat Networks on Twitter
BlueCat Networks Blog
41 min
May 31, 2019 Heavy Networking 452: Using NetBox As A Source Of Networking Truth
Today’s Heavy Networking looks at sources of network truth. Specifically, with NetBox. What is NetBox? To quote netbox.readthedocs.io:
“NetBox is an open source web application designed to help manage and document computer networks. Initially conceived by the network engineering team at DigitalOcean, NetBox was developed specifically to address the needs of network and infrastructure engineers.”
NetBox is growing in popularity among networkers. Here to talk to us about why NetBox is so great is John Anderson. He’s a network automation engineer at NetworkToCode, and a NetBox contributor.
We discuss:

* What NetBox is – IPAM and DCIM (Data Center Infrastructure Management) software
* What NetBox is not – a network management system, a network discovery tool, or DNS/DHCP server
* How to deploy NetBox
* How you model the intended state of your network and import data to it
* The kinds of information it can contain and what you can do with it
* Its support for IPv6
* More

Sponsor: Open Systems
In the crowded SD-WAN market, don’t overlook Open Systems. Open Systems brings security, automation and expert management to let you focus on other aspects of your network. Get visibility, flexibility and control combined with performance, simplicity and security with SD-WAN from Open Systems. To find out more, go to www.open-systems.com/packetpushers.
Sponsor: Tufin
Tufin has pioneered a policy-based approach to network security management using automation and analytics. As a result, you can make network changes in minutes instead of days, reliably and securely. Tufin. The Security Policy Company. Find out more at tufin.com.
Show Links:
NetBox
John Anderson on GitHub
NetworkToCode
1 hr 3 min
May 24, 2019 Heavy Networking 451: Intelligent Network Automation And Intent Engineering With Gluware (Sponsored)
Today’s Heavy Networking was recorded at Gluware Intent 19, a live event in New York City sponsored by Gluware.
The Packet Pushers dive into network automation, learn about Gluware’s capability to bring automation into brownfield environments and derive business intent from existing networks, and explore real-world use cases from customers Merck and Terracon.
Our guests are Jeff Gray, CEO of Gluware; Michael Haugh, VP of Product Management at Gluware; Jamie Hughes, Infrastructure Architect at Terracon; and Salvatore Rannazzisi, Associate Director, Merck.
We discuss:

* What Gluware means by intelligent network automation
* The concept of intent engineering and how Gluware derives intent from your existing networks and configurations
* How Gluware differs from standalone tools such as Ansible
* Working with multi-vendor networks
* Real-world use cases from Merck and Terracon on configuration management, OS upgrades, and more
* The technical and human challenges of automating an enterprise network
* Lessons learned on bringing automation into production

Show Links:
Gluware
Packet Pushers Gluware Intent 19 Live Stream – YouTube
49 min
May 17, 2019 Heavy Networking 450: Getting To Know The Open-Source VyOS Network OS
Today’s Heavy Networking is all about VyOS, an open-source OS for routing that’s based on Debian GNU/Linux.
VyOS “provides a free routing platform that competes directly with other commercially available solutions from well-known vendors. Because VyOS is run on standard amd64, i586 and ARM systems, it is able to be used as a router and firewall platform for cloud deployments.”
Here to catch us up on VyOS is Yuriy Andamasov, the project coordinator.
We discuss:

* VyOS’s origins (it’s a fork of Vyatta Core)
* Primary features, including routing, firewalling, NAT, QoS, VPN and more
* Routing protocols supported, including FRR
* Where it’s being deployed
* Use cases

Sponsor: ExtraHop
ExtraHop is the enterprise cyber analytics company delivering performance and security from the inside out. ExtraHop offers complete visibility with machine learning to help you make quick, confident decisions about your IT environment. Explore the ExtraHop Performance Platform at extrahop.com/packetpushers.
Sponsor: INE
If you’re looking for training, consider INE.com. INE is a training resource for networking and a whole lot more. Visit ine.com/packetpushers to get a free 3-day trial. INE–experts at making you an expert.
Show Links:
VyOS
VyOS blog
VyOS docs
VyOS Appliance – GNS3
VyOS Project 2019 – March Update – VyOS.io
54 min

About Heavy Networking

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Heavy Networking is an unabashedly nerdy dive into all things networking. Described by one listener as "verbal white papers," the weekly episodes feature network engineers, industry experts, and…