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DESIGN Stories

Qualcomm looks to weather cooling phone market

Published on: 2022-07-27

Qualcomm's core business revolves around designing and selling the chipsets that power some of the cellular industry's most prominent and capable phones. That's why it warned Wednesday of a $0.20 reduction in earnings per share in its current quarter, which sent Qualcomm's shares down by almost...

Starry to cover 500,000 households in Vegas this year

Published on: 2022-07-27

BOSTON – Starry Group Holdings, Inc. (NYSE: STRY) (the "Company" or "Starry"), a licensed fixed wireless technology developer and internet service provider, today announced that it is expanding to Las Vegas, Nevada. Starry's broadband service will bring a competitive, customer-first focused,...

Upgrading cell towers could save enough energy to power entire cities

Published on: 2022-07-27

Upgrading to more efficient cellular radio towers could save enough electricity to power cities such as Phoenix, New Orleans or Seattle, according to a new study produced by US research firm J. Gold Associates. Annually, US cell sites use a total of almost 21 million megawatt hours (MWh) of...

Network automation, SASE, 5G rank among enterprise priorities

Published on: 2022-07-22

From incorporating cloud services to keeping the hybrid workforce humming, network execs and architects face myriad challenges every day. The main goals of large organizations are to prioritize those challenges, adjust the network architecture to handle widely distributed applications, services...

Considering a website redesign? Why not do it in public?

Published on: 2022-07-22

A building under construction is a work in progress for all to see. Such is rarely the case with corporate websites. Frequently conceived in back rooms and constructed by teams of design and marketing professionals, business websites are typically built less for target visitors than for...

Cisco Equips Service Provider Partners with New Managed Services Offering for Webex

Published on: 2022-07-21

SAN JOSE, CA, July 21, 2022 — Cisco (NASDAQ: CSCO) has launched a new Webex Wholesale Route-to-Market (RTM) for Service Provider partners to address the evolving needs of SMBs. The new sales model includes a single commercial agreement with each partner and a self-service platform for Service...

The future of smart grid networking

Published on: 2022-06-10

The old model of centralized energy production and distribution is a thing of the past. Taking its place is the smart grid – a decentralized, distributed model that enables hybrid energy production to be spread across a wide geographical area. Battery storage is now more common, as is...

How API gateways complement ESBs

Published on: 2022-05-24

For the modern enterprise, providing delightful customer experiences may be an all-encompassing task, but obsessing about customers is well worth the effort. Forrester research reveals that customer-obsessed companies achieve 2.5 times higher revenue growth and 2.2 times better customer...

5G is important to cloud computing (but not that important)

Published on: 2022-04-26

We’ve talked about 5G for so long that we’re overdue to finally see its benefits. Like many of you, I’ve owned a “5G-ready” phone for the last year. I even make sure to consistently check my phone for a true 5G connection. I often do 5G talks and even teach courses about what we can expect from...

Basing network security on IP addressing: Would it be worth it?

Published on: 2022-04-20

Why is it that over 90% of enterprises tell me that they expect to spend more on security over the next three years, and almost 60% say they expect to spend less on networking? We obviously think that network technology is getting more efficient, more competitive. Why isn’t that the case for...

How to fix Wi-Fi interference

Published on: 2021-02-18

Since Wi-Fi transmits over the airwaves, it’s of course much more susceptible to interference than the wired network. There can be interference from your own network or neighbor's, non-Wi-Fi wireless devices, microwaves, and even radar systems. Because there are so many possibilities, tracking...

Firewall options on a budget

Published on: 2022-07-28

Here’s a scenario that you may have experienced first-hand. Imagine you’re the IT manager of a small business. The management approaches you and says, “We need to secure our network with a firewall.” Typically, such impulsive announcements from the management come after they’ve taken some...

Security by diversity: Designing secure, reliable and robust systems

Published on: 2022-07-27

A chain is not as strong as its weakest link, it can be much much stronger than that. In cybersecurity, the art of building secure systems from insecure but diverse components is an important but often neglected topic; instead processes, rigidity, and structure are generally seen as the only way...

Edge Native Applications are Conquering the Edge

Published on: 2022-07-27

Join Flo on August 18 for Conquering the Edge, the first of three in a webinar series leading up to our Develop with Cisco event in October. When you are reading about “the Edge,” do you always know what is meant by that term? The edge is a very abstract term. For example, to a service provider,...

Twilight Zone: File Transfer Never Completes

Published on: 2022-07-27

Ages ago when we were building networks using super-expensive 64kbps WAN links, a customer sent us a weird bug report: My chat with the engineer handling the ticket went along these lines: Me: What kind of modems are they using? Him: One of those weird baseband modems running at 128 or 256 kbps...

Behind the network that images the whole world every day

Published on: 2022-07-26

Planet is a vertically integrated aerospace and data analytics company that operates the world’s largest commercial fleet of remote sensing satellites. Our mission is to image the whole world every day and make change visible, accessible, and actionable. Since 2013 we have launched over 500...

Palo Alto Networks Provides Telemetry Sharing Capability to CISA CLAW

Published on: 2022-07-14

I’m thrilled to announce that Palo Alto Networks Prisma Access and Cortex Data Lake are now fully compatible with the Cybersecurity and Infrastructure Security Agency (CISA) Cloud Log Aggregation Warehouse (CLAW). Working with CISA, Palo Alto Networks created an onboarding service to forward...

Data Expertise Is the Foundation of Good Threat Detection

Published on: 2022-07-13

The extended detection and response (XDR) space has exploded over the past two years. Competitors from both the endpoint detection and response (EDR), as well as the security incident and event monitoring (SIEM) spaces are seeking to capture a market designed to provide threat detection and...

Twilight Zone: File Transfer Causes Link Drop

Published on: 2022-07-13

Long long time ago, we built a multi-protocol WAN network for a large organization. Everything worked great, until we got the weirdest bug report I’ve seen thus far: Try to figure out what was going on before reading any further ;) I got onsite, the customer started the file transfer, and (as...

How to Launch an Effective Zero Trust Initiative

Published on: 2022-07-07

We define Zero Trust as a strategic approach to cybersecurity that secures an organization by eliminating implicit trust and continuously validating every stage of a digital interaction. Boiled down, Zero Trust simplifies risk management to a single use case: the removal of all implicit trust...

Enterprise-Grade Security for 5G — Why It’s Needed

Published on: 2022-07-06

Our May 2022 article, “The Imperative of Enterprise-Grade Security for 5G,” explains why 5G security must be “enterprise-grade.” We also explain what that term means. This blog provides a high-level summary of our May article. The promise of 5G is much more than lower latencies or faster speeds....

Why Wipro Believes ZTNA 2.0 Is an Important Step in Your SASE Journey

Published on: 2022-07-05

This blog is part of “ZTNA Partners,” a series where we take a closer look at how our partnerships protect today's hybrid workforces and environments with ZTNA 2.0. It should come as no surprise that the pandemic changed how businesses conduct their operations. Whatever the industry, the...

Repost: Buffers, Congestion, Jitter, and Shapers

Published on: 2022-06-27

Béla Várkonyi left a great comment on a blog post discussing (among other things) whether we need large buffers on spine switches. I don’t know how many people read the comments; this one is too valuable to be lost somewhere below the fold You might want to add another consideration. If you have...

The Future of IP Telephony with Cisco

Published on: 2022-06-20

For over twenty years, Cisco has been one of the leading providers of IP Telephony and VoIP systems for medium, large, to very large enterprises of all types. Its flagship product, the Cisco Unified Communications Manager (CUCM) along with its various companion Unified Communication (UC)...

Are Routing Protocols Automation ?

Published on: 2022-05-17

Routing protocols have self-configuration features as part of the design. For example, OSPF neighbour discovery was intended to simplify the deployment of new routers onto a network segment. BGP shares configuration information so that each router automatically learns subnets in the reachable...

VCF Upgrade Failure with Static NSX-T Routing

Published on: 2022-04-29

Do you have a VMware Cloud Foundation infrastructure that’s using NSX-T to statically route network traffic between the NSX-T Edges and the physical network? If so, you can be faced with this error when attempting to upgrade VCF via the SDDC Manager: This is a quick post with the solution to...

Cisco Cat9300X – Tech Field Day

Published on: 2022-04-14

The other week I had the privilege of participating in Tech Field Day Exclusive with Cisco 2022. One of the presentations that I enjoyed was the talk on the C9300X. I think this is because I am currently working heavily with them on a current project As I said, the Cisco Catalyst 9300 is a...

Introducing Malcolm Booden!

Published on: 2021-08-25

I am excited to announce that Malcolm Booden, my friend and fellow networking instructor, has agreed to take over my CCDE training business. I first met Malcolm when he attended my training course during his pursuit of the CCDE certification. Malcolm earned his CCDE certification in 2017 (CCDE...

Zodiac FX Gets a 3D Printed Case

Published on: 2021-02-18

Not content with having dug the Northbound Networks Zodiac FX out of a pile of overlooked technology in my office, I thought that the poor thing desperately needed to have a case to sit in. When I originally received the switch, I did not have a 3D printer and had no idea what it would take to...

At Least They Didn't Blame the Wi-Fi

Published on: 2020-12-28

Prime Video's stream of the 49ers-Cardinals NFL game received plenty of bad reviews on social media. While most of the negativity focused on stream quality, Wi-Fi largely escaped blame. There is one application type that confounds networks above all others, and it is live video. Pick your...

netAlly EtherScope nXG – The new goto device?

Published on: 2020-05-05

Awhile ago I wrote about the AirCheck and what I felt it needed in terms of a device refresh (https://blakekrone.com/check-check-123-aircheck/), it would seem that netAlly took some of those cues in their latest update to the EtherScope nXG. With the latest 1.2 software release, available with...

The Case for Upgrading to Wi-Fi 6

Published on: 2020-05-03

Ben Miller works as a Wi-Fi contractor, with a background in pre- and post-installation consulting, technical and marketing writing, and instruction for vendor-neutral and vendor-specific Wi-Fi training. You can contact Ben via email, or follow him on Twitter and Twitch, using the contact...

Wi-Fi Capacity Infographic

Published on: 2017-11-13

Learn tips and tricks for building a high-performance WLAN!I teamed up with the great staff at Ekahau to put together this infographic about how to design and deploy high capacity Wi-Fi. It's the second poster in the series, following the Wi-Fi Design Poster that focused on radio frequency (RF)...

Capacity Planner Version 2.0 Released

Published on: 2017-06-01

Modern Wi-Fi networks are complex beasts. Despite all the fancy new features in products, the technology is only becoming more complex and the demands on the network are only growing. Wi-Fi is the most heavily used method to transport user data today, eclipsing cellular and LAN traffic volumes...

Download the New 'Wi-Fi Design Poster' Today!

Published on: 2016-06-09

Performing a proper Wi-Fi design is critical to success. Modern WLANs have grown ever more complex, having to provide high quality coverage, meet density and capacity requirements, facilitate user mobility and roaming, all while minimizing both Wi-Fi interference and external RF...

The TOGAF ADM – Part II

Published on: 2019-09-02

Continuing right off from my last post, we going to continue our run-though of the ADM wrapping the last few phases. Phase E: opportunities & Solution: Now, it’s time for us to review the outputs from our previous phases and to start defining the beginning of our implementation details. We do...

The TOGAF ADM – Part I

Published on: 2019-08-10

In my last post we briefly looked at the TOGAF ADM. We won’t be able to fit it all into a single blog post but we will start to explore the ADM from a high level. ADM stands for Architecture Development Method and it organized in 10x different phases. These different phases are designed to...

TOGAF 9 Certified

Published on: 2019-07-19

After passing more technical certification tests than I care to count, the concept of studying for a non-technical exam seemed surreal. Studying for exam that was not going to teach or test me about protocols, signals, or configurations just sounded so foreign. I do have to admit that there were...

CCDE Thoughts After Cisco Live 2019

Published on: 2019-06-18

My CCDE Thoughts After Cisco Live 2019The CCDE exam was conspicuously absent from the grand re-imagining of the CCNA/CCNP/CCIE certification programs. Here's a brief summary of the announcements (everything takes effect on February 24, 2020):CCIE Routing & Switching is being renamed to CCIE...

Surveying for Catalyst 9120

Published on: 2019-06-12

Recently another blog post came up discussing the issues with surveying for a Cisco Catalyst 9120. I too had to go through the pain of trying to survey with it as I had to figure out how do I get a Catalyst 9120 online as well as a 3504 WLC. This setup was certainly not as alluring as the other...

How to Differentiate Yourself in the Job Market

Published on: 2018-09-17

Most readers of this newsletter can safely be classified as experts in the field of networking. This article is intended to provide advice on how to differentiate yourself in the field, and perhaps leverage your unique experience into a more profitable career. This post was inspired by the Seth...

RSSI Conundrum

Published on: 2018-03-14

What’s the number one go to value for “design” a wireless network? If you ask most people they will say RSSI. Received Signal Strength Indicator, or RSSI, is the quickest way to see if you have coverage. It’s the “four bars” approach to wireless design, but it isn’t anywhere close to designing a...

Three Months with Google Fiber

Published on: 2017-01-06

I'm one of the lucky few to benefit from Google Fiber's recent expansion into new regions (before they nixed the whole thing). I've had the service fire three months now and figured I should write up my experience with it thus far. Google Fiber announced that it would be expanding to the...

there are many ways

Published on: 2016-05-10

I was neglecting this blog for a while, more than 2 years actually. Well, things changed in my personal life, but this is out of scope for this whiteboard. Let me stick to networking stuff here. I worked for an ISP as a network engineer for many years. I thought I knew so much about the...

GoBGP – A Control Plane Evolving Software Networking

Published on: 2016-03-29

If I have talked to you over the past year or two about networking, odds are I have mentioned a project to you called GoBGP. If we have spoken a lot, you are probably sick of me talking to you about GoBGP There is a reason, it’s because GoBGP is a missing link in networking that has been for a...

Configuring Macvlan and Ipvlan Linux Networking

Published on: 2016-03-28

Macvlan and Ipvlan are both Linux type networking interfaces that are both supported by the Linux kernel. They are unique for a few different reasons. One thing that makes them both very attractive is they do not use bridges in their implementation and natively namespace aware. It solves some...

Still Undecided About Cisco Live? Take a Sneak Peek!

Published on: 2015-04-15

If you still aren't convinced to go to Cisco Live! this year in San Diego, perhaps a sneak peek at two of the courses will help.BRKRST-2311P - IPv6 Planning, Deployment and Troubleshooting(1 Hour)  Presented by Jim Bailey - Technical Leader, CiscoApril 21st10:00am PDT / 12:00pm CDT/1:00pm...

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