The History of the URL

The History of the URL

On the 11th of January 1982 twenty-two computer scientists met to discuss an issue with ‘computer mail’ (now known as email). Attendees included the guy who would create Sun Microsystems, the guy who made Zork, the NTP guy, and the guy who convinced the government to pay for Unix. The problem was simple: there were 455 hosts on the ARPANET and the situation was getting out of control.

The History of the URL

This issue was occuring now because the ARPANET was on the verge of switching from its original NCP protocol, to the TCP/IP protocol which powers what we now call the Internet. With that switch suddenly there would be a multitude of interconnected networks (an ‘Inter... net’) requiring a more ‘hierarchical’ domain system where ARPANET could resolve its own domains while the other networks resolved theirs.

Other networks at the time had great names like “COMSAT”, “CHAOSNET”, “UCLNET” and “INTELPOSTNET” and were maintained by groups of universities and companies all around the US who wanted to be able to communicate, and could afford to lease 56k lines from the phone company and buy the requisite PDP-11s to handle routing.

The History of the URL

In the original ARPANET design, a central Network Information Center Continue reading

Best Computer for Engineering Students

Engineering students need a computer that is portable, has good CPU speed, lots of memory, great graphics, and is affordable, which means that the laptops useful for most students simply won’t be the best computer for engineering students. Ironically, the laptops that make the best computers for students in engineering are gaming computers.

Why Gaming Computers are the Best Computers for Engineering Students

The reason why gaming laptops tend to be the best computers for engineering students is because the features that make these laptops good for gaming are also the same features that engineering students need, including:

  • A fast CPU speed
  • Plenty of hard drive memory
  • At least 8GB of RAM
  • Wi-Fi and Bluetooth connectivity
  • Excellent graphics
  • Reasonable cost

While good gaming computers aren’t cheap, unless someone is a real hardcore gamer, gaming computers can be acquired for between $1,000 and $2,000, which is cheaper and much more portable than a workstation for engineering students. In addition, while great for completing engineering tasks, gaming computers will also allow engineering students to play games, as well as do all the things that regular laptops do.

This allows engineering students to save and share their work, as well as use the Continue reading

Cloud Networking Transformation Ahead

Cloud Networking Transformation Ahead

Networking is undergoing a metamorphosis. Today’s operations are challenged to cope with the DevOps, NetOps, SecOps and CloudOps models that need consistent operations control. Why should enterprises care? How do you cope with decades of legacy and is change possible? Arista believes that the networking world is at the cusp of a transformation, significantly facilitated by the agile, dynamic and economic network models of the public cloud providers. They have proven the elegance of simple yet scalable designs that transform siloed networks for the data center, core, campus or branch PINs (Places in the Network) into east west PICs(Places in the Cloud). This new paradigm is a far cry from the traditional siloed network architectures that required applications to be assigned to specific servers or storage, causing fixed-function rigidity. Agility and high availability are pivotal foundations to building the new PICs.

Should I Go with VXLAN or MLAG with STP?

TL&DR: It’s 2020, and VXLAN with EVPN is all the rage. Thank you, you can stop reading.

On a more serious note, I got this questions from an Johannes Spanier after he read my do we need complex data center switches for NSX underlay blog post:

Would you agree that for smaller NSX designs (~100 hypervisors) a much simpler Layer2 based access-distribution design with MLAGs is feasible? One would have two distribution switches and redundant access switches MLAGed together.

I would still prefer VXLAN for a number of reasons:

Should I Go with VXLAN or MLAG with STP?

TL&DR: It’s 2020, and VXLAN with EVPN is all the rage. Thank you, you can stop reading.

On a more serious note, I got this questions from an Johannes Spanier after he read my do we need complex data center switches for NSX underlay blog post:

Would you agree that for smaller NSX designs (~100 hypervisors) a much simpler Layer2 based access-distribution design with MLAGs is feasible? One would have two distribution switches and redundant access switches MLAGed together.

I would still prefer VXLAN for a number of reasons:

Read more ...

Rust: Constants, Variables, and Mutability – Oh My!

In the last post I wrote about my journey from Python to Go as my primary language, and how I am now exploring Rust. This will be the first in a series of posts on Rust, mostly written from this perspective. I realize not everyone is going to Rust from Go, but that’s my perspective, and it will be impossible to keep this perspective from showing through and making comparisons between Rust and Go or Python.

AT&T Puts More Jobs on the Chopping Block

Continued job losses at one of the world’s largest network operators underlines the impact...

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COVID-19 affects IT pros at work

The COVID-19 virus has already forced cancellation of major technology conferences, Mobile World Congress being the first and most notable, and others could follow, but there are more immediate effects on IT professionals.The availability of servers is projected to be reduced due to scaled back or halted production in China, where efforts to contain the coronavirus include closing factories. The center of the outbreak, Wuhan, is also the center of display production.10 of the world's fastest supercomputers Processor manufacturer Nvidia acknowledges the effects of the virus on its production and predicts a $100 million revenue hit next quarter because of it.To read this article in full, please click here

Covid-19 affects IT pros at work

The Covid-19 virus has already forced cancellation of major technology conferences, Mobile World Congress being the first and most notable, and others could follow, but there are more immediate effects on IT professionals.The availability of servers is projected to be reduced due to scaled back or halted production in China, where efforts to contain the coronavirus include closing factories. The center of the outbreak, Wuhan, is also the center of display production.10 of the world's fastest supercomputers Processor manufacturer Nvidia acknowledges the effects of the virus on its production and predicts a $100 million revenue hit next quarter because of it.To read this article in full, please click here

Daily Roundup: Cumulus Touts Open Source Network Automation

Cumulus added open source network automation; Telefónica to lead yet another edge alliance; and...

Read More »

© 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.

4 Ways SD-Branch Is Transforming Retail Networks

Retail SD-branch can help a business retain customers, offer them better service, and increase...

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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.

CNCF Survey Underscores Cloud Native Popularity

Results from CNCF's annual survey indicate growing ubiquity of the use of cloud native technologies...

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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.

A requirements spec for voting

In software development, we start with a "requirements specification" defining what the software is supposed to do. Voting machine security is often in the news, with suspicion the Russians are trying to subvert our elections. Would blockchain or mobile phone voting work? I don't know. These things have tradeoffs that may or may not work, depending upon what the requirements are. I haven't seen the requirements written down anywhere. So I thought I'd write some.


One requirement is that the results of an election must seem legitimate. That's why responsible candidates have a "concession speech" when they lose. When John McCain lost the election to Barack Obama, he started his speech with:
"My friends, we have come to the end of a long journey. The American people have spoken, and they have spoken clearly. A little while ago, I had the honor of calling Sen. Barack Obama — to congratulate him on being elected the next president of the country that we both love."
This was important. Many of his supporters were pointing out irregularities in various states, wanting to continue the fight. But there are always irregularities, or things that look like irregularities. In every election, if a Continue reading

Lawrence Livermore To Surpass 2 Exaflops With AMD Compute

As the steward of the nuclear weapon arsenal for the United States government, it is probably not an overstatement to say that Lawrence Livermore National Laboratory, one of the main supercomputer and scientific research facilities operated by the Department of Energy, is keenly interested in bang for the buck. …

Lawrence Livermore To Surpass 2 Exaflops With AMD Compute was written by Timothy Prickett Morgan at The Next Platform.

Use TheGreenBow VPN Client to Connect with VyOS

The site-to-site Virtual Private Networks (VPN) connect two or more remote locations. Thanks to it, computers located inside locations can communicate securely over the public Internet as they were located on the same private network. This is accomplished by tunnels that interconnect remote locations. Tunnels add extra layer security, encrypting user traffic carried inside tunnels. […]
Continue reading...

Ericsson 5G Production Ramps at Texas ‘Smart Factory’

While “smart,” the facility initially counts approximately 100 employees. The facility itself...

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Are All Networks Created Equal?

It’s not illogical to argue that since we all use the same networking technologies that all networks are essentially the same. Routing protocols, layer two technologies, and overlays all behave the same whether they are run in SOHO, enterprise, or service provider environments. That being said, it feels like there can be worlds of difference between the application of these technologies in different environments. In this episode Nick Buraglio, Kevin Myers, and I discuss just how interchangeable these technologies are and why it feels like engineers who work on the same technologies can feel worlds apart when their paths intersect.

Nick Buraglio
Guest
Kevin Myers
Guest
Jordan Martin
Host

Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/

The post Are All Networks Created Equal? appeared first on Network Collective.

Day Two Cloud 038: Making The Case For Third-Party Cloud Storage

Today's Day Two Cloud podcast focuses on third-party cloud storage. While cloud providers have native storage offerings, there may be times when you want an alternative. Guest Stephen Foskett discusses why third-party storage in the cloud is viable, describes common enterprise use cases, and examines key issues including performance, data management, and operations.

The post Day Two Cloud 038: Making The Case For Third-Party Cloud Storage appeared first on Packet Pushers.

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