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Category Archives for "Networking"

From CCNA to SDN: Interview with David Bombal

A few weeks ago, I had an interesting video chat with David Bombal in which we covered a wide variety of topics including

  • What would you do if you started networking today?
  • How do you increase the value of your knowledge?
  • Networking hasn’t changed in the last 40 years and whatever you learn about networking will still be valid 20 years from now;
  • Why should I learn and implement network automation?
  • When should I start learning about network automation?

Note: David posted the whole list of topics with timestamps in the pinned comment under the video.

Enjoy the video

Fast Friday – Aruba Atmosphere 2019

A couple of quick thoughts that I’m having ahead of Aruba Atmosphere next week in Las Vegas, NV. Tech Field Day has a lot going on and you don’t want to miss a minute of the action for sure, especially on Wednesday at 3:15pm PST. In the meantime:

  • IoT is really starting to more down-market. Rather than being focused on enabling large machines with front-end devices to act as gateways we’re starting to see more and more IoT devices either come with integrated connective technology or interface with systems that do. Building control systems aren’t just for large corporations any more. You can automate an office on the cheap today. Just remember that any device that can talk can also listen. Security posture is going to be huge.
  • I remember some of the discussions that we had during the heady early days of SDN and how unimpressed wireless and mobility people were when they figured out how the controllers and dumb edge devices really worked. Most wireless pros have been there and done that already. However, recently there has been a lot of movement in the OpenConfig community around wireless devices. And that really has the wireless folks excited. Because Continue reading

Instagram and Friday Photos

I’m making some changes to the Friday Photo series (which is why I’ve not posted any of these in a bit). I will be posting a small copy of each photo to Instagram, and a fuller image over on my smugmug page. I will be including a link to the smugmug version in the instagram post, but because of the way instragram sets things up you’ll have to copy the link out and paste it into a browser separately.

I will be going back through all my images and reprocessing them, so you will probably see duplicates from time to time.

IoT Security, Privacy Vital from the Outset

For any new technology to be trusted, it must be secure. That is why privacy and security are essential to the development of new technologies from the outset. They must not be an afterthought.

This is especially so for the Internet of Things (IoT) and the plethora of devices that are now available. These devices are gradually being integrated into daily life as we enjoy the benefits they bring. In a number of cases, we are also increasing our dependence on them, such as fitness monitors and home automation.

But poorly-secured IoT devices and services can serve as entry points for cyber attacks, compromising sensitive data and potentially threatening the safety of individual users, as well others.

Attacks on infrastructure and other users, fueled by networks of poorly-secured IoT devices, can affect the delivery of essential services such as healthcare and basic utilities, put the security and privacy of others at risk, and threaten the resilience of the Internet globally.

As concerns mount about the need for regulating the ecosystem and policymakers around the world consider ways to secure it throughout its product lifecycles, it is important to consider the risks this fast-growing technology poses, as well as what steps Continue reading

How to manage your Linux environment

The configuration of your user account on a Linux system simplifies your use of the system in a multitude of ways. You can run commands without knowing where they're located. You can reuse previously run commands without worrying how the system is keeping track of them. You can look at your email, view man pages, and get back to your home directory easily no matter where you might have wandered off to in the file system. And, when needed, you can tweak your account settings so that it works even more to your liking.Linux environment settings come from a series of files — some are system-wide (meaning they affect all user accounts) and some are configured in files that are sitting in your home directory. The system-wide settings take effect when you log in and local ones take effect right afterwards, so the changes that you make in your account will override system-wide settings. For bash users, these files include these system files:To read this article in full, please click here

As memory prices plummet, PCIe is poised to overtake SATA for SSDs

A collapse in price for NAND flash memory and a shrinking gap between the prices of PCI Express-based and SATA-based solid-state drives (SSDs) means the shift to PCI Express SSDs will accelerate in 2019, with the newer, faster format replacing the old by years' end.According to the Taiwanese tech publication DigiTimes (the stories are now archived and unavailable without a subscription), falling NAND flash prices continue to drag down SSD prices, which will drive the adoption of SSDs in enterprise and data-center applications. This, in turn, will further drive the adoption of PCIe drives, which are a superior format to SATA.To read this article in full, please click here

As memory prices plummet, PCIe is poised to overtake SATA for SSDs

A collapse in NAND memory prices and a closing of the price gap between PCI Express-based and SATA-based solid-state drives (SSDs) means the shift to PCIe SSDs will accelerate in 2019, with the newer, faster format replacing the old by years' end.According to the Taiwanese tech publication DigiTimes (the stories are now archived and unavailable without a subscription), falling NAND flash prices continue to drag down SSD prices further, which will drive the adoption of SSDs in enterprise and data center applications. This, in turn, will further drive the adoption of PCI Express drives, which are a superior format to SATA.To read this article in full, please click here

BrandPost: Robots in Retail are Real… and so is Edge Computing

I’ve seen plenty of articles touting the promise of edge computing technologies like AI and robotics in retail brick & mortar, but it wasn’t until this past weekend that I had my first encounter with an actual robot in a retail store. I was doing my usual weekly grocery shopping at my local Stop & Shop, and who comes strolling down the aisle, but…. Marty… the autonomous robot. He was friendly looking with his big googly eyes and was wearing a sign that explained he was there for safety, and that he was monitoring the aisles to report spills, debris, and other hazards to employees to improve my shopping experience. He caught the attention of most of the shoppers.To read this article in full, please click here

Kernel of Truth season 2 episode 4: Integrated network telemetry

Subscribe to Kernel of Truth on iTunes, Google Play, Spotify, Cast Box and Sticher!

Click here for our previous episode.

Telemetry, is it cool or not? Host Brian tries to wrangle in JR Rivers and Scott Raynovich to find out in our latest episode. Will he succeed? Or, more importantly, what does integrated networking telemetry mean and why should you care? Listen and find out although pro tip: make sure you listen to the whole episode to find out what surprising band JR has been listening to.

Guest Bios

Brian O’Sullivan: Brian currently heads Product Management for Cumulus Linux. For 15 or so years he’s held software Product Management positions at Juniper Networks as well as other smaller companies. Once he saw the change that was happening in the networking space, he decided to join Cumulus Networks to be a part of the open networking innovation. When not working, Brian is a voracious reader and has held a variety of jobs, including bartending in three countries and working as an extra in a German soap opera. You can find him on Twitter at @bosullivan00.

Scott Raynovich: Scott is the Founder and Principal Analyst at Futuriom. Founded in Continue reading

Cisco warns of two security patches that don’t work, issues 17 new ones for IOS flaws

Cisco has dropped 17 Security advisories describing 19 vulnerabilities in the software that runs most of its routers and switches, IOS and IOS/XE.The company also announced that two previously issued patches for its RV320 and RV325 Dual Gigabit WAN VPN Routers were “incomplete” and would need to be redone and reissued.[ Also see What to consider when deploying a next generation firewall. | Get regularly scheduled insights by signing up for Network World newsletters. ] Cisco rates both those router vulnerabilities as “High” and describes the problems like this:   To read this article in full, please click here

Cisco warns of two security patches that don’t work, issues 17 new ones for IOS flaws

Cisco has dropped 17 Security advisories describing 19 vulnerabilities in the software that runs most of its routers and switches, IOS and IOS/XE.The company also announced that two previously issued patches for its RV320 and RV325 Dual Gigabit WAN VPN Routers were “incomplete” and would need to be redone and reissued.[ Also see What to consider when deploying a next generation firewall. | Get regularly scheduled insights by signing up for Network World newsletters. ] Cisco rates both those router vulnerabilities as “High” and describes the problems like this:   To read this article in full, please click here

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