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Category Archives for "Networking"

Datanauts 135: An Introduction To Edge Computing

It turns out you can t do it all in the cloud. And thus, we have the rise of edge computing, in which data is collected, processed, and analyzed close to the source of its creation and close to where people and systems need it.

The goals of edge computing include improving performance, reducing the costs and time of data transmission, and creating new applications to take advantage of that data.

Our guide to edge computing is Alex Marcham. Alex is a technologist, writer and researcher. You can find his work at NetworkArchitecture2020.com.

We level-set with a working definition of edge computing, examine the notion of locality and what it means for edge computing, and discuss latency issues.

We explore edge computing use cases such as industrial processes and video surveillance, and dive into the infrastructure that drives this technology.

Show Links:

Network Architecture 2020

Alex Marcham on Twitter

The post Datanauts 135: An Introduction To Edge Computing appeared first on Packet Pushers.

History Of Networking – Martin Casado – Software Defined Networking

Today, every network vendor sells a solution labeled “software-defined”. But in the 2000’s, the networking stack was driven by constraints in hardware that could not be changed. In this History of Networking, Martin Casado joins us to talk about the ideas that drove his research in software-defined networking and his thoughts on hardware and software in networking.

 

Martin Casado
Guest
Russ White
Host
Jordan Martin
Host
Eyvonne Sharp
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 History Of Networking – Martin Casado – Software Defined Networking appeared first on Network Collective.

Canadian Youth Advocates Participate in Enhancing IoT Project

On May 14, a group of young people who are currently working on or are studying tech, politics, computer science, and the Internet of Things (IoT) met for a two-hour Youth Advocates for IoT Security round table. This event was a part of the Internet Society’s year-long initiative, the Canadian Multistakeholder Process – Enhancing IoT Security in partnership with Innovation, Science and Economic Development, the Canadian Internet Registration Authority, CANARIE, and CIPPIC. It serves as just one of several workshops that will be held during the process to develop recommendations for a set of norms and policies to secure the IoT in Canada.

The round table offered an opportunity for young people in school or their early careers to voice their opinions and provide unique inputs for consideration on the following aspects of IoT security:

  • How young people currently use IoT devices;
  • How they anticipate these devices will be used in the future; and
  • Effective ways of educating young consumers about IoT security.

The group discussed the ways in which IoT devices have become seemingly ubiquitous in youth’s lives. IoT devices have also become integral, and often required, parts of classroom learning and workplaces. Now, the lines Continue reading

Who’s developing quantum computers?

There are two main camps in the quantum computing development, says Ashish Nadkarni, Program Vice President of Computing Platforms, Worldwide Infrastructure at IDC. In the first camp are entrenched players from the world of classical computing. And in the second are quantum computing startups.“It’s a highly fragmented landscape,” Nadkarni says. “Each company has its own approach to building a universal quantum computer and delivering it as a service.”[ Now see What is quantum computing [and why enterprises should care.] Classic-computing vendors pioneer quantum computing Along with IBM, other classical computing companies staking a claim in the emerging field of quantum computing include:To read this article in full, please click here

What’s quantum computing [and why enterprises need to care]

The first thing to know about quantum computing is that it won’t displace traditional, or ‘classical’ computing. The second thing to know: Quantum computing is still a nascent technology that probably won’t be ready for prime time for several more years.And the third thing you should know? The time to start protecting your data’s security from quantum computers is now.[ Learn how server disaggregation can boost data center efficiency and how Windows Server 2019 embraces hyperconverged data centers . | Get regularly scheduled insights by signing up for Network World newsletters. ] Here’s an overview of what you should know about quantum computing.To read this article in full, please click here

Who’s developing quantum computers?

There are two main camps in the quantum computing development, says Ashish Nadkarni, Program Vice President of Computing Platforms, Worldwide Infrastructure at IDC. In the first camp are entrenched players from the world of classical computing. And in the second are quantum computing startups.“It’s a highly fragmented landscape,” Nadkarni says. “Each company has its own approach to building a universal quantum computer and delivering it as a service.”[ Now see What is quantum computing [and why enterprises should care.] Classic-computing vendors pioneer quantum computing Along with IBM, other classical computing companies staking a claim in the emerging field of quantum computing include:To read this article in full, please click here

What’s quantum computing [and why enterprises need to care]

The first thing to know about quantum computing is that it won’t displace traditional, or ‘classical’ computing. The second thing to know: Quantum computing is still a nascent technology that probably won’t be ready for prime time for several more years.And the third thing you should know? The time to start protecting your data’s security from quantum computers is now.[ Learn how server disaggregation can boost data center efficiency and how Windows Server 2019 embraces hyperconverged data centers . | Get regularly scheduled insights by signing up for Network World newsletters. ] Here’s an overview of what you should know about quantum computing.To read this article in full, please click here

Multi-tier load-balancing with Linux

A common solution to provide a highly-available and scalable service is to insert a load-balancing layer to spread requests from users to backend servers.1 We usually have several expectations for such a layer:

scalability
It allows a service to scale by pushing traffic to newly provisioned backend servers. It should also be able to scale itself when it becomes the bottleneck.
availability
It provides high availability to the service. If one server becomes unavailable, the traffic should be quickly steered to another server. The load-balancing layer itself should also be highly available.
flexibility
It handles both short and long connections. It is flexible enough to offer all the features backends generally expect from a load-balancer like TLS or HTTP routing.
operability
With some cooperation, any expected change should be seamless: rolling out a new software on the backends, adding or removing backends, or scaling up or down the load-balancing layer itself.

The problem and its solutions are well known. From recently published articles on the topic, “Introduction to modern network load-balancing and proxying” provides an overview of the state of the art. Google released “Maglev: A Fast and Reliable Software Network Load Balancer” describing their Continue reading

Why is Network Automation So Hard?

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

Every now and then someone asks me “Why are we making so little progress on network automation? Why does it seem so hard?”

There are some obvious reasons:

However, there’s a bigger elephant in the room: every network is a unique snowflake.

Read more ...

Regular Expression for Network Engineer Part-1

A regular expression is set of pattern used to define certain amount of text. An powerful  tool in any scripting language to match any pattern. Lets have a look , how regular expression can be used in Python to solves the problem. Module “re’ is imported in python to support regular expression . << import […]

Regular Expression for Network Engineer Part-1

A regular expression is set of pattern used to define certain amount of text. An powerful  tool in any scripting language to match any pattern.

Lets have a look , how regular expression can be used in Python to solves the problem. Module “re’ is imported in python to support regular expression .

<< import re >>

[  ] – its for specifying character class, individual char or range of character can be mached .

 

  • [123] will match any of the character ‘1’,’2′,’3′
  • [1-3] will match any of the character  ‘1’,’2′,’3′
  • [a-d] will match any of the character a,b,c,d
  • [a-z] will match lowercase
  • [A-Z] will match uppercase
  • [^6] will match any character except 6
  • [a-zA-Z0-9] will match any alphanumeric character
  • [^a-zA-Z0-9] will not match any alphanumeric character
  •  [a-zA-Z0-9] is equivalent to \w
  •  [^a-zA-Z0-9] is equivalent to \W
  • [0-9] is equivalent to \d
  • [^0-9] is equivalent to \D
  • [  \t\n\r\f\v] is equivalent to \s
  • [ ^ \t\n\r\f\v] is equivalent to \S

 

. – Period character ,use for matching any single charcter

  • EXAMPLE :

 

[code language=”python”]

In [225]: ip =’10.20.30.40′
In [226]: re.search(r”.”,ip)
Out[226]:&lt;_sre.SRE_Match object; span=(0, 1), match=’1’_>
In [227]: re.search(r”.”,ip).group(0)
Out[227]: ‘1’

Continue reading

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