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DESIGN Stories

DriveNets Boasts Cloud-Native Router Breakthrough

Published on: 2019-04-17

Cloud-native router startup DriveNets has followed up its February funding announcement by claiming its virtualized routing software, dubbed Network Cloud, can support 400G-per-port routing and be scaled up to a whopping 768 Tbit/s, making it (possibly) the highest capacity router on offer.

Making America great in 5G (Analyst Angle)

Published on: 2019-04-17

America is becoming more joined up in its pursuit of global 5G leadership, with presidential vision and objectives, complementary corporate strategies and the FCC's plans to Facilitate America's Superiority in 5G Technology (the 5G FAST Plan). In the interests of maximising international ...

What SDN is and where it’s going

Published on: 2019-04-16

Hardware reigned supreme in the networking world until the emergence of software-defined networking (SDN), a category of technologies that separate the network control plane from the forwarding plane to enable more automated provisioning and policy-based management of network resources.

What SDN is and where it’s going

Published on: 2019-04-16

Hardware reigned supreme in the networking world until the emergence of software-defined networking (SDN), a category of technologies that separate the network control plane from the forwarding plane to enable more automated provisioning and policy-based management of network resources.

PLDT, Cisco team up for 5G-ready IP transport network

Published on: 2019-04-12

Manila, Philippines, 11 April 2019 - Philippines' leading digital services provider PLDT has partnered with global technology leader Cisco to help transform its IP transport infrastructure into a fully automated software defined 5G-ready IP transport network.

Iliad Launches 5G Ready IP Network Architecture with Segment Routing IPv6 in Italy

Published on: 2019-04-09

PARIS - MPLS+SDN+NFV World Congress - April 9, 2019 - Cisco announced today its involvement in helping Iliad deploy a state-of-the-art national IP Network, powered by Segment Routing IPv6 (SRv6), to provide a new mobile offering in Italy.

Resolving the contradiction between cloud and security

Published on: 2019-04-04

Posted by Ulrich Kohn on April 04, 2019 Moving applications and data into public clouds is an easy way for enterprises to simplify cooperation among geographically dispersed teams and use compute and storage resources in a more efficient way. But those advantages come at a price.

Vodafone Idea Limited and Cisco: Building a Distributed Multicloud Network Strategy for Retail and Enterprise Customers

Published on: 2019-04-03

MUMBAI, India - April 3, 2019 - Vodafone Idea Limited, the largest telecom service provider in India, is deploying a state-of-the-art, automated multicloud network across the country to enable an unmatched experience for its retail and enterprise customers. As pioneers in Cloud implementation, ...

Intel's Agilex FPGA family targets data-intensive workloads

Published on: 2019-04-02

After teasing out details about the technology for a year and half under the code name Falcon Mesa, Intel has unveiled the Agilex family of FPGAs, aimed at data-center and network applications that are processing increasing amounts of data for AI, financial, database and IoT workloads.

The story of smart data

Published on: 2019-04-02

With the internet of things (IoT) we've realized that we can amass data from our sensors, smart objects or "things" that know more about our surrounding world than we do or, at least, what we have programmed them to know!

Rockwell Automation, Panduit, and Cisco open Manufacturing Advanced Technology Center in Mexico City

Published on: 2019-03-28

Related Media Manufacturing Advance Technology Center, Mexico City MEXICO CITY, 28 March 2019.- Rockwell Automation, Panduit and Cisco, with special collaboration with Tecnologico de Monterrey, EY and Unified announced today the opening of their Manufacturing Advanced Technology Center (MATC) in ...

Blockchain marches steadily into global financial transaction networks

Published on: 2019-03-08

The organization behind most of the world's cross-border money and security transfers is deploying a blockchain proof-of-concept (PoC) for clients' shareholders to use in electronic voting. SWIFT said this week it will jointly conduct the PoC in the Asia Pacific region with securities software ...

How to move to a disruptive network technology with minimal disruption

Published on: 2019-02-27

Disruptive network technologies are great-at least until they threaten to disrupt essential everyday network services and activities. That's when it's time to consider how innovations such as SDN, SD-WAN, intent-based networking ( IBN) and network functions virtualization ( NFV) can be ...

Arm introduces Neoverse high-performance CPUs for servers, 5G

Published on: 2019-02-22

There have been some interesting developments in the Arm-as-a-server processor field, from Cavium's success to Amazon offering much cheaper instances on its home-brew Arm processors. But now Arm Holdings itself is getting into the fray, and it's offering is a whopper. Last October, Arm announced ...

Arm introduces Neoverse high-performance CPUs for servers, 5G

Published on: 2019-02-22

There have been some interesting developments in the Arm-as-a-server processor field, from Cavium's success to Amazon offering much cheaper instances on its home-brew Arm processors. But now Arm Holdings itself is getting into the fray, and it's offering is a whopper. Last October, Arm announced ...

CoreDNS joins Kubernetes, Prometheus, and Envoy

Published on: 2019-01-24

CoreDNS, the DNS server created to serve as support infrastructure for Kubernetes, has been "graduated" by the Cloud Native Computing Foundation, sustainers of Kubernetes and other open source technology for building modern clouds.

Review: 6 slick open source routers

Published on: 2018-02-01

Hackers of the world, unite! You have nothing to lose but the lousy stock firmware your routers shipped with. Apart from smartphones, routers and wireless base stations are undoubtedly the most widely hacked and user-modded consumer devices.

Review: 6 slick open source routers

Published on: 2018-02-01

Hackers of the world, unite! You have nothing to lose but the lousy stock firmware your routers shipped with. Apart from smartphones, routers and wireless base stations are undoubtedly the most widely hacked and user-modded consumer devices.

Why dynamic mapping is changing network troubleshooting for the better

Published on: 2017-05-15

Effective network troubleshooting requires experience and a detailed understanding of a network's design. And while many great network engineers possess both qualities, they still face the daunting challenge of manual data collection and analysis. The storage and backup industries have long been ...

What has OpenStack done for me lately? The next 5 issues to address

Published on: 2017-05-11

OpenStack has been on a roll, seeing increased adoption across the business world, highlighted by major deployments from leading organizations like Verizon, BBVA, and NASA Jet Propulsion Laboratory, as well as continued growth in the contributing community. But what's next? While it's nice to ...

WiFi’s evolving role in IoT

Published on: 2017-05-11

This vendor-written tech primer has been edited by Network World to eliminate product promotion, but readers should note it will likely favor the submitter's approach. Internet of Things applications have diverse connectivity requirements in terms of range, data throughput, energy efficiency and ...

How to: Designing a mission-critical network

Published on: 2019-04-16

Air traffic control networks are one of many mission critical networks that need special considerations ( Archives New Zealand, Flickr) Ask 10 network engineers to design a network and you'll most likely get 10 different designs each as intricate as their experience.

Applying Zero Trust to Google Cloud Environments

Published on: 2019-04-10

At Palo Alto Networks, we've been helping our customers make a dramatic, transformative shift on how they approach security. This journey is not just about the implementation of technologies, but rather a change in the very philosophy on what security is and how it should be designed across the ...

802.11ax Is NOT A Wireless Switch

Published on: 2019-04-10

802.11ax is fast approaching. Though not 100% ratified by the IEEE, the spec is at the point where most manufacturers and vendors are going to support what's current as the "final" version for now. While the spec for [what marketing people like to call Wi-Fi ...

Ekahau Retools For The Future

Published on: 2019-04-09

As a long-time Ekahau user (pretty sure I was one of the first few American customers way back when), I've gotten used to continuous improvement and evolution from Ekahau Site Survey (ESS) suite of tools. There have always been new features right around the corner, and the company has been ...

Heavy Networking 440: A Wireless Deployment Crash Course

Published on: 2019-04-09

Today's Heavy Networking is a crash course in executing a new wireless deployment for engineers who are wired, not wireless, experts. We explore how and why to gather user and technical requirements, understanding the RF environment, channel management, and more. Our guest is Robert Boardman.

Practice Safe BGP

Published on: 2019-04-04

This blog is a "fun BGP story" - let's call it a Case Study #1, a recent design situation involving local-as (Case Study #2), plus some lessons learned. One theme is that local-as can be fairly handy, so handy there might be a danger of over-using it!

Lessons Learned in Cloud Networking – AWS vs Azure

Published on: 2019-04-01

I've been working a lot with cloud networking lately. I will share some of my findings as this is still quite new and documentation around some topics is poor. Especially on the Azure side. Let me just first start with

Cisco IP Phone 7800/8800 Series with MPP Firmware

Published on: 2019-03-28

The Cisco® IP Phone 7800/8800 Series with Multiplatform Phone Firmware is a cost-effective, high-fidelity voice and video communications portfolio designed to improve your organization's person-to-person communications while reducing your operating costs on approved ...

The Cloud Is (Not) Magic

Published on: 2019-03-21

Cloud technologies are changing the world. Sometimes faster than businesses can keep up, both as consumers of managed or SaaS application, but also on the vendor side. This blog is about some things I've noticed recently as potential pitfalls, and business challenges affecting ability to ...

Amazon Transit VPCs and Transit Gateway

Published on: 2019-03-07

This blog is about AWS, specifically multiple VPCs and routing, and some recent developments. My intent is to give you the flavor of some AWS design approaches, and then point you to some good material for the details. Amazon AWS Transit VPCs is an important cloud concept to consider using as ...

Automation: Tools vs Languages

Published on: 2019-02-20

When it comes to expressing intent in automation workflows, there is validation in both using a task or workflow engine and also knocking it together using scripting in some language. I try not to get involved in tool or language wars, but quite honestly sometimes can't help myself.

NAE: Some Help Dealing with Brain Block

Published on: 2019-01-17

For years, thanks to the gift of misaligned perception, I've been mentally blocked. I've avoided things like Machine Learning because my perceived skill with mathematics is weak, avoided programming languages like C# because the perceived uphill hike to get familiar is high and avoided front end ...

NAE: Automation and Time

Published on: 2019-01-08

Time is the enemy of everything in the field of IT. It doesn't matter whether you are a designer or operator. Time is your sworn enemy. In all the training and certifications I've ever done, all that is missing is a knighting ceremony in which a sword is laid on your shoulders and you're sworn ...

Aruba Wireless Controllers: Architecture & Configurations

Published on: 2019-02-21

A little bit of training, some researching, and a lot of time on the GUI is what I found to be the recipe in getting comfortable with Aruba Wireless Controllers. Even though I spent more time configuring the controllers via GUI, knowing the syntaxes I now find it much simpler to do it via the CLI.

Dealing with Performance Brownouts

Published on: 2019-02-07

I've done a couple of application slowness (brownout) troubleshooting sessions recently. This blog is my attempt to condense some observations from both engagements, to share lessons learned. "Condense" might not be the right word, seeing how long this blog got! Troubleshooting with some process ...

SDN Ate My Hamster

Published on: 2019-02-04

I posted a Tweet the other day which gained a lot of attention in the networking community: As SDN gains more traction, people start fearing for their jobs. Some jobs will decrease in demand and some will disappear entirely. However,

2018 was a good and busy year ! Things I have done during the last year

Published on: 2019-01-02

2018 is done! I wanted to share what I have done during the last year. During 2018, probably the biggest decision for me was establishing a company in Turkey. This photo was taken during a CCDE Bootcamp 10 days after I opened my office in Istanbul.

My Home Automation Gear

Published on: 2018-12-30

I've mostly kept this blog around virtualization technology. Over the last few months, I've had more and more conversations about home automation and how my house is tricked out. A lot of people seem to be interested in my setup, so I'm going to start sharing more on the gear, workflows & results.

Vendor Lock-in – Is It Really That Bad?!

Published on: 2018-12-30

In today's IT infrastructure, open source software is a common component. Many organizations and network engineers stay away from certain architectures and products citing vendor lock-in as their only argument but often lack the understanding to why they think vendor

SD-WAN – Glorified DMVPN?

Published on: 2018-12-28

I had an interesting discussion with Jon Cooper in the Network Collective Slack. The discussion was around SD-WAN. We were discussing if SD-WAN is just a "glorified DMVPN" or if it's something more than that. Note that this was a

Innovation or Iteration

Published on: 2018-02-16

The word "innovation" gets thrown around a lot these days. I wouldn't blame anyone if the word now evokes a gag reflex similar to how we all eventually reacted to "cloud" a few years back. Every product and presentation seemed to be reworked to make it appear it was a "cloud" product.

Sharkfest 2018 EU

Published on: 2018-11-07

Sharkfest 2018 EU recap Vienna

Understanding Cisco DMVPN

Published on: 2018-06-26

In an old post, dated 2011, I explained various types of VPN technologies. In seven years several things have changed: SHA1 is deprecated, des and 3des are no more used for security issues, but some VPN technologies are still used with protocols more secure (SHA256, AES, ...).

Cisco Smart Install Remote Code Execution

Published on: 2018-04-05

At the end of March, Cisco published a stack-based buffer overflow vulnerability in Smart Install Client code. This vulnerability enables an attacker to remotely execute arbitrary code without authentication. So it allows getting full control over a vulnerable network equipment. Cisco Smart ...

“Thirteen hundred APs, no open support tickets” – achieving quality in wireless networks

Published on: 2018-10-08

"Thirteen hundred APs, no open support tickets," Sudheer Matta, VP of Products for Mist Systems, boldly stated during his MFD3 presentation. At the time, he was referencing one of their largest customers specifically, but the company's desire to prevent bugs, create high quality customer ...

RedNectar’s Hyperflex Pre-Install Checklist (Updated)

Published on: 2018-10-06

Completing Cisco's Pre-installation Checklist for Cisco HX Data Platform will capture all the information you need, but not necessarily in the order you need it, and for a single site only. So, I decided to write a version that gets the information in the order you need it and in a format that's ...

Outdoor WiFi is Smaller, Sleeker and Faster #HPE #Aruba #MFD3 #AP387

Published on: 2018-10-01

Once upon a time, I found myself doing a lot of outdoor WiFi. Not the type of outdoor WiFi you hear people talking about now (stadiums or arenas), but college campuses, outdoor mesh and point to point links. Recently at Mobility Field Day 3, I ran across this sweet little access point by Aruba.

Solving 802.11ad challenges

Published on: 2018-09-24

The 802.11ad (60GHz) market has been interesting to watch, especially now that products utilizing the technology are becoming more prevalent. Vendors leveraging 802.11 in a frequency band whose propagation properties differ significantly from the traditional 802.11 bands of 2.4 and 5GHz mean new ...

Attacking Wireshark

Published on: 2018-09-03

Every once in a while there is some news about Wireshark being vulnerable to being attacked/exploited/pwned, meaning that there is a way to craft frames/packets in a pcap/pcapng file to make Wireshark crash and (if done right) execute malicious code. So let's take a look at what that means and ...

Cisco OpFlex

Published on: 2018-06-12

Cisco ACI uses OpFlex to communicate with VMWare DVS/VDS. OpFlex is an extensible policy protocol designed to exchange abstract policy between a network controller and a set of smart devices capable of rendering policy. OpFlex relies on a separate information model understood by agents in both ...

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 ...

The Overlay Problem: Getting In and Out

Published on: 2016-09-30

I've been researching overlay network strategies recently. There are plenty of competing implementations available, employing various encapsulations and control plane designs. But every design I've encountered seems ultimately hampered by the same issue: scalability at the edge. Why Build an ...

Taking the CCIE Lab in RTP

Published on: 2016-07-29

Cisco's campus in Research Triangle Park, North Carolina, is one of only two places in the United States where candidates can complete a CCIE lab exam (the other being in San Jose, California). People fly in from all over the eastern US and beyond to spend a day taking the exam. Lots of folks ...

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 volum

L3 fabric DC -The underlay Network (BGP) -part2

Published on: 2017-01-17

In the previous post, we laid the foundation of L3 fabric DC In this post we will discuss the underlay network which mainly provide IP reachability plus ECMP capability, here BGP would play a role in your DC next to the 3 other that we discussed one of the previous posts.

L3 fabric DC -The underlay Network -Part1

Published on: 2016-12-07

In the previous posts we have discussed the classic DC designs and the M-LAG solution. In this post we will cover the basic L3 fabric DC, you might never heard of it or you think that's a solution for massive scale DC, yes the massive DC in the world would be running L3 fabric but nowadays more ...

Classic DC and M-LAG

Published on: 2016-08-29

In the pervious post we talked about BGP in Data Center and how it is a topic of discussion in between the DC and the SP arenas. In this post I will start explaining some classic DC design and laying its shortage which will engage the SP gurus with us, as well it will make sure ...

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 interference. ...

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, Cisco 10:00am PDT / 12:00pm CDT/1:00pm EDT This ...

there are many ways

Published on: 2016-05-10

Two vendors, two OSPFs. Does this come as a surprise to you? No? Welcome to the club. 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.

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