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Category Archives for "Networking"

IoT security essentials: Physical, network, software

Even in the planning stages of a deployment, IoT security is one of the chief stumbling blocks to successful adoption of the technology.And while the problem is vastly complicated, there are three key angles to think about when laying out how IoT sensors will be deployed in any given setup: How secure are the device themselves, how many are there and can they receive security patches.Physical access Physical access is an important but, generally, straightforward consideration for traditional IT security. Data centers can be carefully secured, and routers and switches are often located in places where they’re either difficult to fiddle with discreetly or difficult to access in the first place.To read this article in full, please click here

IoT security essentials: Physical, network, software

Even in the planning stages of a deployment, IoT security is one of the chief stumbling blocks to successful adoption of the technology.And while the problem is vastly complicated, there are three key angles to think about when laying out how IoT sensors will be deployed in any given setup: How secure are the device themselves, how many are there and can they receive security patches.Physical access Physical access is an important but, generally, straightforward consideration for traditional IT security. Data centers can be carefully secured, and routers and switches are often located in places where they’re either difficult to fiddle with discreetly or difficult to access in the first place.To read this article in full, please click here

Operators Dish on 5G Strategies for Enterprise

5G heralds a new framework for mobile connectivity and has enterprises poised to gain entirely new...

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Will CCDE Practical Exam (Lab) Change in 2020?

Will CCDE Exam (Lab) change in 2020. I have been receiving this question again and again after Cisco’s announcement on Cisco certification exam changes.  Short answer is NO. Little bit long answer is, it will not change in February 2020 and in fact it has been the only design certification since many years. (Cisco I …

Continue reading "Will CCDE Practical Exam (Lab) Change in 2020?"

The post Will CCDE Practical Exam (Lab) Change in 2020? appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Technologies and the protocols may not be used for what they were intended

I was reading a book today , called Deploying QoS for Cisco IP and NGN networks, which I can recommend you for history and future for QoS in networking industry, there was couple paragraph in the book, which lead me to share my thoughts about the protocols/technologies and their usage.   In the book, as …

Continue reading "Technologies and the protocols may not be used for what they were intended"

The post Technologies and the protocols may not be used for what they were intended appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

SDxCentral’s Top 10 Articles — August 2019

HCX, VMware’s Top-Secret Sauce, Comes Out; VMware Buys Veriflow for Network Monitoring,...

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© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.

Lanner Joins Forces With Hot OCP Ecosystem

Networking manufacture Lanner, well known for its uCPE and white box appliances, is the latest...

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© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.

Huawei Accuses US of Cyberattacks, ‘Menacing’ Its Employees

Huawei accused the U.S. government of using cyberattacks and “every tool at its disposal” to...

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AT&T Asks to Play With Its mmWave 5G Spectrum

The carrier has asked the FCC for early access to the 24 GHz spectrum it won during a recent...

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© SDxCentral, LLC. Use of this feed is limited to personal, non-commercial use and is governed by SDxCentral's Terms of Use (https://www.sdxcentral.com/legal/terms-of-service/). Publishing this feed for public or commercial use and/or misrepresentation by a third party is prohibited.

2019 Chapterthon – Our Chapters, Connecting the World One Community at a Time

Each year, the Chapterthon project competition brings enthusiasm and excitement among our global community. We look forward to this time of year, when our communities mobilize and work alongside each other to achieve a common goal for the development of the Internet.

For the 2019 Chapterthon, we are delighted to announce that 34 Chapters and Special Interest Groups (SIGs) from across the globe have started implementing their work on local solutions that will bring some of the hardest-to-reach places and community segments online—connecting the unconnected.

Over the next two months, these 34 projects will:

  • connect underprivileged and rural areas in Armenia, Bangladesh, Benin, Mali, and South Africa;
  • build a community network in Kenya;
  • establish online databases for rural farmers in Burkina Faso and Saint Vincent and the Grenadines;
  • create an online audio library for people living with disabilities in northern rural Argentina;
  • revolutionize a mobile network unit in Madagascar for use in the event of a natural disaster;
  • educate and empower over fifty rural women on how to use the Internet during a friendly game of “Tag”;
  • build an FM broadcast system in rural Ghana; preserve Indigenous culture in rural Brazil;
  • sweat it out at a bootcamp in Continue reading

Tech Bytes: Applying Cloud Principles To Networking With Big Switch Networks (Sponsored)

Today's sponsored Tech Bytes explores how Big Switch Networks applies cloud design principles to data center and cloud networks. Network engineers can provide a developer-friendly environment while still enforcing policy, enabling security controls, and getting visibility into the network. Our guest is Big Switch CTO Paul Unbehagen.

The post Tech Bytes: Applying Cloud Principles To Networking With Big Switch Networks (Sponsored) appeared first on Packet Pushers.

Forwarding using sFlow-RT

The diagrams show different two different configurations for sFlow monitoring:
  1. Without Forwarding Each sFlow agent is configured to stream sFlow telemetry to each of the analysis applications. This configuration is appropriate when a small number of applications is being used to continuously monitor performance. However, the overhead on the network and agents increases as additional analyzers are added. Often it is not possible to increase the number of analyzers since many embedded sFlow agents have limited resources and only support a small number of sFlow streams. In addition, the complexity of configuring each agent to add or remove an analysis application can be significant since agents may reside in Ethernet switches, routers, servers, hypervisors and applications on many different platforms from a variety of vendors.
  2. With Forwarding In this case all the agents are configured to send sFlow to a forwarding module which resends the data to the analysis applications. In this case analyzers can be added and removed simply by reconfiguring the forwarder without any changes required to the agent configurations.
There are many variations between these two extremes. Typically there will be one or two analyzers used for continuous monitoring and additional tools, like Wireshark, might be deployed Continue reading

Network Break 250: VMware Embraces Kubernetes; Dell Partners With VMware On Datacenters, SD-WAN

It's a heaping helping of Network Break as we try to parse all the Kubernetes pronouncements coming out of VMworld 2019, including Project Pacific and Tanzu Mission Control. Plus we cover new tech and new partnerships between Dell EMC and VMware, new products from Apstra and Mellanox, and HPE's latest financials.

The post Network Break 250: VMware Embraces Kubernetes; Dell Partners With VMware On Datacenters, SD-WAN appeared first on Packet Pushers.

BrandPost: IT Leaders Need to Get Aggressive with SD-WAN

Late last year I moderated a MicroScope roundtable in the UK on the challenges and opportunities of SD-WAN. The representatives included 12 leading SD-WAN vendors, including Michael O’Brien, vice president of worldwide channel sales for Silver Peak. I started off the discussion by introducing a data point from a TechTarget survey (TechTarget owns MicroScope) that only 26 percent of companies surveyed had an SD-WAN deployment underway. This spans any stage of the deployment cycle, including testing. Given the hype around SD-WAN and how many conversations I have with IT leaders about it, this number seemed low to me, so I wanted to get a better feel for what the leading vendors thought about it. To read this article in full, please click here

If You Have to Simulate Your Whole Network, You’re Doing It Wrong

This blog post was initially sent to subscribers of my SDN and Network Automation mailing list. Subscribe here.

Have you ever seen a presentation in which a startup is telling you how awesome their product is because it allows you to simulate your whole network in a virtual environment? Not only that, you can use that capability to build a test suite and a full-blown CI/CD pipeline and test whether your network works every time you make a change to any one box in the network.

Sounds awesome, right? It’s also dead wrong. Let me explain why that’s the case.

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