Heavy Networking from Packet Pushers show

Heavy Networking from Packet Pushers

Summary: Join the Packet Pushers for weekly (or more!) conversations about data networking. Continuous professional development. Architecture and design, software defined, cloud, routing, switching, security, wireless, campus, enterprise, and more. Technical discussions with vendors about their products, deep dialog with real people who make networks work.

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  • Artist: Packet Pushers Interactive
  • Copyright: © 2019 Packet Pushers Interactive LLC

Podcasts:

 Heavy Networking 465: Looking Backward and Forward with Harry Quackenboss | File Type: audio/mpeg | Duration: 1:08:22

Harry Quackenboss is long time veteran of infrastructure technology. In networking he was a VP of Sales of Crescendo for FDDI networking (to the desktop) which was acquired by Cisco. He later founded Woven Systems as a high speed Ethernet company of the time and more lately CEO of cPlane, a SDN company now relaunched as CPLANE NETWORKS, .  Today, Harry is investor and advisor to a number of companies in the infrastructure space. Harry talks with Greg about the state of networking based on his experiences. 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. Topics Covered * Ethernet, FDDI and did we make the right choice and why ? * Bundling and unbundling of products * The invisible cost of product evangelisation. * Should customers be smarter about demanding free sales effort ? * Can the WAN / LAN / Campus converge into a single unit of operation ? * Why SDWAN is taking off ? Permission-less connectivity, Internet is good enough. * Open Source isn’t free and the cost of software isn’t directly less than hardware. * The emergence of co-processors for off-load and what that might mean for NFV * Service Function Chaining or Microsegmentationsomewhat   You can find Harry on LinkedIn at https://www.linkedin.com/in/harryquackenboss/  

 Heavy Networking 464: Provocative Statements With Tom Hollingsworth | File Type: audio/mpeg | Duration: 48:32

On Heavy Networking, Tom Hollingsworth joins us from GestaltIT. Don’t know Tom? I’ll describe Tom as a long-time network engineer and CCIE turned Scruffy-Looking Nerd Herder who manages many of the community IT events you know as Tech Field Day. I’ve known Tom for many years, and had this opportunity to get his take on many things I’ve noticed going on in networking. This episode, we’re going rapid fire reaction. I’ll pitch a statement (which I might or might not agree with) to Tom, and let him react. Buckle up, everyone. We’re going for a ride. Provocative statements include: * Certifications are dead * Enterprise networking is dying * If you want an IT career today, it’s cloud or nothing * BGP is the kitchen sink of routing protocols and that’s bad * More 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: Tom Hollingsworth on Twitter Networking Nerd.net – Tom’s blog Tech Field Day

 Heavy Networking 463: Under The Hood Of 400G Ethernet With Cisco (Sponsored) | File Type: audio/mpeg | Duration: 35:28

We’re going warp speed on Packet Pushers Heavy Networking: 400G Ethernet. If you think 400G is the same thing as 100G, just faster, you’re sort of right…but also kind of wrong. Joining us to explain the why, what, and when of 400G is Ray Nering, Product Manager; and Lane Wigley, Technical Marketing Engineer; both from Cisco Systems, our sponsor for today’s episode. We discuss: * Business and market trends driving 400G * 400G use cases * When 400G switches and routers will ship (the end of 2019) * The role of standards bodies such as the IEEE and industry consortia * Differences between QSFP-DD and OSFP optics * The mechanical and electrical engineering challenges of 400G * What 400G packaging will look like * Next steps beyond 400G Show Links: High Capacity 400G Data Center Networking – Cisco Systems Cisco Announces 400GbE Switches in Nexus 3400 And 9000 Families – Packet Pushers Ray Nering – Cisco Interview at OFC Conference 2019 – YouTube

 Heavy Networking 462: You’re Not A Coder, But You Need A Coder | File Type: audio/mpeg | Duration: 1:08:55

Today on Heavy Networking, we talk about what an ops team looks like when adopting automation. Network automation seems to be driving many of you towards Python. You’re learning to code, or least trying to. If you could just get that tool written, it would help so much. It’s hard though, what with projects going on, not enough people to do all the work, a huge network maintenance event on the horizon, and on and on. And dare I say technical debt? You gotta maintain that tool if you ever get it written. Maybe writing your own automation tools isn’t your job as a network engineer. Maybe you need someone to come alongside of you…like a software developer. Our guests today are Brian Gleason and Jeremy Schulman. Brian has recently started a new job where network automation is really important and handled in a forward-thinking way. Jeremy‘s been in the world of network automation for as long as we’ve been talking about it on Heavy Networking. He’s worked for vendors, his own startup, and now for Major League Baseball. We discuss: * Whether an Ops team needs a dedicated developer * The different types of automation projects and their blast radii * How to calculate ROI for having a developer dedicated to infrastructure tooling * The differences between scripting and programming * How much time you should dedicate to learning to develop, and where to start * The pros and cons of buying vendor tools vs. building your own 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: 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. Show Links: Interactive Python Jupyter Notebooks – Jupyter.org Brian Gleason on Twitter Bytes of Cloud – Brian’s blog Jeremy Schulman on Twitter

 Heavy Networking 461: Key Concepts Of Intent-Based Networking | File Type: audio/mpeg | Duration: 58:56

Intent-based networking is the latest in a long string of dreams and schemes to get meaningful, wide-scale automation into data center networks. In broad strokes, intent-based networking, or IBN, sounds like magic: take high-level, human comprehensible business goals, run them through some abstraction layers, click your heels three times, and out comes the low-level configurations that are automatically programmed into the requisite devices. For any network engineer who’s been burned by automation schemes in the past, this might sound too good to be true. On today’s Heavy Networking, we peer behind the curtain of intent-based networking to find out if we’re actually dealing with a wizard this time, or just another pretender blowing smoke. Our guest is Phil Gervasi, a network engineer and solutions architect. You may know him at Network Phil on Twitter or his blog networkphil.com. Phil wrote two in-depth white papers on IBN for the Packet Pushers Ignition site. He did a lot of research and analysis, and today we’re going to pick his brains as we follow the yellow brick road to intent-based networking. In particular, we dive into three main areas of IBN: * Network abstraction * Continuous validation * Autonomous remediation 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: Packet Pushers Ignition Phil Gervasi on Twitter Network Phil Intent-Based Networking – Concepts and Overview – IETF

 Heavy Networking 460: Extending The Life Of Your Cabling Plant With InterOptic (Sponsored) | File Type: audio/mpeg | Duration: 45:24

On today’s Heavy Networking, sponsored by InterOptic, we explore how to extend the life of your legacy cabling infrastructure in the data center as you grow to 100G Ethernet, and the options available when you need to upgrade. As organizations move down the path toward 100G, the higher data rates mean that old cabling might not be good enough. It’s a fair chance that newer Ethernet speeds are not compatible with your existing cable, and now cabling costs become a factor in the selection of pluggable modules. InterOptic works with customers on these issues and helps them select the right pluggable modules. Joining us today are Robert Coenen, Ph.D., VP of Business Development at Interoptic; and Alex Latzko, lead network architect at Server Central Turing Group. We discuss: * How cabling affects your choice of pluggable modules * Considerations for single-mode and multi-mode fiber * Future-proofing for 25/50/100G * Whether you need new patch leads * Whether copper in the data center makes sense * SFPs vs. GBICs * Preparing for 400G * More Show Links: InterOptic.com How To Get Your Data Center Ready For 100G – Network Computing Heavy Networking 431: Understanding Emerging Trends In Optics With InterOptic (Sponsored) – Packet Pushers Show 360: All About Optics With InterOptic (Sponsored) – Packet Pushers Robert Coenen on LinkedIn Alex Latzko on LinkedIn

 Heavy Networking 459: Ignition Relaunch And Ethan’s New QoS Course | File Type: audio/mpeg | Duration: 45:00

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

 Heavy Networking 458: SDN Federation – One Controller To Rule Them All? | File Type: audio/mpeg | Duration: 1:10:07

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

 Heavy Networking 457: The Future Of Networking With Dave Temkin And Steve Chalmers | File Type: audio/mpeg | Duration: 59:01

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

 Heavy Networking 456: How To Choose A Higher Ed Program For An IT Career | File Type: audio/mpeg | Duration: 1:01:00

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

 Heavy Networking 455: The Wonderful World Of Wireless – Beacons, Probes, SSIDs And More | File Type: audio/mpeg | Duration: 51:00

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

 Heavy Networking 454: Analyzing Encrypted Traffic In The TLS 1.3 Era With ExtraHop (Sponsored) | File Type: audio/mpeg | Duration: 45:41

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

 Heavy Networking 453: BlueCat Networks Sinks DNS Claws Into Automation (Sponsored) | File Type: audio/mpeg | Duration: 40:37

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

 Heavy Networking 452: Using NetBox As A Source Of Networking Truth | File Type: audio/mpeg | Duration: 1:02:04

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

 Heavy Networking 451: Intelligent Network Automation And Intent Engineering With Gluware (Sponsored) | File Type: audio/mpeg | Duration: 48:02

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

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