0

HS. Part 3. Working out graphs capabilities for the network modelling.

Hello my friend,

There was quite a considerable amount of the feedbacks on the previous post about the data centre network visualisation with graphs. Originally we planned to cover the topology generation today. However, we changed the plan to improve the math model of our graph to make it more flexible and useful from modelling perspective.

1
2
3
4
5
No part of this blogpost could be reproduced, stored in a 

retrieval system, or transmitted in any form or by any 

means, electronic, mechanical or photocopying, recording, 

or otherwise, for commercial purposes without the 

prior permission of the author.

Network automation training – boost your career

To be able to understand and, more important, to create such a solutions, you need to have a holistic knowledge about the network automation. Come to our network automation training to get this knowledge and skills.

At this training we teach you all the necessary concepts such as YANG data modelling, working with JSON/YAML/XML data formats, Linux administration basics, programming in Bash/Ansible/Python for multiple network operation systems including Cisco IOS XR, Nokia SR OS, Arista EOS and Cumulus Linux. All the most useful things such as NETCONF, REST API, OpenConfig and many Continue reading

0

March 2020 on ipSpace.net

We started March 2020 with the second part of Cisco SD-WAN webinar by David Peñaloza Seijas, continued with Upcoming Internet Challenges update, and concluded with 400 GE presentation by Lukas Krattiger and Mark Nowell.

You can access all these webinars with Standard or Expert ipSpace.net subscription. The Cisco SD-WAN presentation is already available with free ipSpace.net subscription, which will also include the edited 400 GE videos once we get them back from our video editor.

0

Enterprises opt for different microsegmentation architectures

It's a network jungle these days with predators relentlessly searching for ways to infiltrate corporate resources. IT leaders are responding with a variety of different microsegmentation approaches, all designed to isolate workloads from each other and prevent unauthorized lateral movements. We asked three enterprises to share why they deployed microsegmentation technology in their networks and how it's working. Here are their stories.Distributed firewalls via VMware NSX Todd Pugh, CIO at food products manufacturer SugarCreek, manages a fully virtualized private data center. Like his counterparts at organizations worldwide, his goal is simple: to frustrate and deter network attackers. "Above all, we protect our databases," he says. "We do anything and everything to keep uninvited guests out of our databases."To read this article in full, please click here

0

Kubernetes DR

Recently, we had a customer issue where a production GKE cluster was deleted accidentally which caused some outage till the cluster recovery was completed. Recovering the cluster was not straightforward as the customer did not have any automated backup/restore mechanism and also the presence of stateful workloads complicated this further. I started looking at some … Continue reading Kubernetes DR →

0

Response: Cisco Licensing Made Easier

I enjoyed this about Cisco licensing and how mercenary it feels

The post Response: Cisco Licensing Made Easier appeared first on EtherealMind.

0

When do You Quit Certifications?

I received a question on Twitter from my friend Fernando on feedback on when to give up on certifications:

@danieldibswe would really like to hear your thoughts/inputs about this question. https://t.co/ulNKcsiCEp

— Fernando Herrera (@Fern_HerreraJr) April 18, 2020

First of all, not everyone will agree that you even need certifications. That’s another discussion and I think there are not many reasons to avoid them entirely, but let’s assume that you already have certifications, when do you give up on them?

That is going to be a choice each person has to make, and it will depend on a number of factors, I think. Here are some that immediately come to mind:

• How do you learn?
• Current role
• Bonus models
• Future role
• Number of years in the industry
• Body of work
• Are you well known in the industry?

What’s your method for learning a new skill? People use certifications differently but for me it’s about a guided learning path. I know roughly what to study to become decently skilled at a topic. For example, when I wanted to learn more about AWS and their networking, I decided to study for the AWS Solutions Architect Associate. For me, it’s motivating to Continue reading

0

Git Tip: Use Word Diff

Git is great (once you get beyond the basic recipes), and I love my new blog setup that allows me to keep track of all the changes I make with Git.

However, there’s a slight gotcha if you use Git with Markdown: whenever you change something, the whole line (and using tools like IA Writer a whole paragraph is a single line) is marked as changed, for example:

0

Helping with COVID-19 Projects: Cloudflare Workers now free through Project Galileo

The Internet has been vital to our response to the COVID-19 crisis: enabling researchers to communicate with the rest of the world, connecting resources with people who need them, and sharing data about the spread.

It’s been amazing to see some of the projects people have stood up on Cloudflare Workers to assist during this crisis. Workers allows you to get set up in minutes, it’s fast and scalable out of the box, and there’s no infrastructure to maintain or scale, which is great if you want to create a project quickly.

To support critical web projects that help in the fight against the COVID-19 pandemic, we’re giving free access to our Cloudflare Workers compute platform through Project Galileo. We believe sites, apps, APIs, and tools that can help people with COVID-19 are exactly the type of critically important projects that Project Galileo was designed to support.    

Free Cloudflare Workers

One of the earliest impacts of the COVID-19 crisis was the switch that many organizations made to a fully remote model. As that happened, and we realized that many organization’s VPNs were not up to the task of scaling to support this increased load, Cloudflare made Cloudflare for Continue reading

0

Riverbed Doubles Down on WAN Optimization

The company’s strategy centers on four “fundamental pillars,” made up of WAN optimization,...

Read More »

0

Interesting: Easy Analytics with Elastic Stack

Adrian Giacometti described how he used Elastic Stack (ELK) to build a dashboard for his integration tests and network logs.

Maybe it’s time to build our own network monitoring systems from open-source components instead of paying vendors big bucks for slick PowerPoint slides.

0

UPDATE 4-18: How enterprise networking is changing with a work-at-home workforce

As the coronavirus spreads, public and private companies as well as government entities are requiring employees to work from home, putting unforeseen strain on all manner of networking technologies and causing bandwidth and security concerns.  What follows is a round-up of news and traffic updates that Network World will update as needed to help keep up with the ever-changing situation.  Check back frequently!UPDATE 4.17AT&T reported that Email traffic is down 25% as more people opt for phone and video calls.  Video conferencing is on the rise with more than 470k Webex Meeting Calls on April 9, the highest during the COVID-19 pandemic.  It also stated instant messaging, including text traffic from messaging apps and platforms, has slightly declined since the week prior, but overall is up nearly 60%.To read this article in full, please click here

0

The New Stack Context: Stress, Resilience and the Network Effects of COVID-19

Welcome to The New Stack Context, a podcast where we discuss the latest news and perspectives in the world of cloud native computing. For this week’s episode, we spoke with The New Stack correspondent Jennifer Riggins about all of the reporting she and others on the TNS team have been doing recently on the effects that the COVID-19 global pandemic is having on the tech industry. TNS editorial and marketing director Libby Clark hosted this episode, alongside founder and TNS publisher Alex Williams and TNS managing editor Joab Jackson. Subscribe: Fireside.fm | Stitcher | Overcast | TuneIn For this episode, we wanted to look at and not only discuss the changing patterns in network traffic that the global COVID-19 pandemic has wrought, due to factors such as people staying at home and working from home, and the sudden acceleration of e-learning. As Riggins writes in a recent post: For a lot of tech and infrastructure teams, they not only are going through the stress of the collective trauma we’re sharing in, but they are struggling to keep up with ever-scaling, extreme strains on their systems. Simply put, Continue reading

0

Daily Roundup: Nokia Faces a Hostile Takeover

Nokia faced a hostile takeover bid; COVID-19 related ransomware attacks spiked; and Red Hat stacked...

Read More »

0

Portworx Essentials: A Free Cloud Native Storage Engine for Kubernetes

If you deal with Kubernetes, you know that storage is one of the core building blocks of the cluster infrastructure. It is as important as the compute building block delivered by the worker nodes. Since the power of the cluster is always measured in terms of the number of worker nodes and their configuration, storage doesn’t get its share of attention. Imagine this: you configured a powerful bare-metal cluster and want to run a highly available and mission-critical workload on it. Without a solid storage engine, your cluster is only good for running stateless and ephemeral workloads that don’t need persistence. But any enterprise application is a combination of both — stateless and stateful services. You wouldn’t be able to justify the investment made in the brand new Kubernetes cluster if you are unable to run end-to-end applications on it. When you install the open source, up-steam Kubernetes distribution, it doesn’t come with a high-performance storage engine. Unlike managed Kubernetes services in the public cloud that come with default storage classes mapped to their respective block storage services, your cluster doesn’t have any storage class. A persistent volume is to storage what a node is to compute. Just like the Continue reading

0

IETF: Travel criteria for in-person/virtual IETF 108

Good list of things to think about on travel in post-lockdown

The post IETF: Travel criteria for in-person/virtual IETF 108 appeared first on EtherealMind.

0

Nokia Stares Down Hostile Takeover Bid

The hostile takeover bid follows a previous report that claimed the company was considering...

Read More »

0

Red Hat Stacks OpenStack Onto ZTE’s XCloud

The work is targeted at helping telecommunication operators deploy virtual network functions in...

Read More »

0

AMD introduces high-performance EPYC processors

AMD has introduced three new processors in its second-generation EPYC 7Fx2 series, which is optimized for frequency and delivers what AMD claims is the fastest per-core performance in the x86 server market.In the server space, AMD is besting Intel when it comes to core count. AMD has the 64-core EPYC line. Intel, which currently tops out at 28 cores, has 38- and 48-core parts due later this year. But it's the individual core performances that matter, and in some benchmarks, Intel wins. READ MORE: How to dispose of IT hardware without hurting the environmentTo read this article in full, please click here

0

Ransomware Attacks Spike 148% Amid COVID-19 Scams

“Notable spikes in attacks can also be correlated to key days in the COVID-19 news cycle,”...

Read More »

0

Is BGP Safe Yet? No. But we are tracking it carefully

BGP leaks and hijacks have been accepted as an unavoidable part of the Internet for far too long. We relied on protection at the upper layers like TLS and DNSSEC to ensure an untampered delivery of packets, but a hijacked route often results in an unreachable IP address. Which results in an Internet outage.

The Internet is too vital to allow this known problem to continue any longer. It's time networks prevented leaks and hijacks from having any impact. It's time to make BGP safe. No more excuses.

Border Gateway Protocol (BGP), a protocol to exchange routes has existed and evolved since the 1980s. Over the years it has had security features. The most notable security addition is Resource Public Key Infrastructure (RPKI), a security framework for routing. It has been the subject of a few blog posts following our deployment in mid-2018.

Today, the industry considers RPKI mature enough for widespread use, with a sufficient ecosystem of software and tools, including tools we've written and open sourced. We have fully deployed Origin Validation on all our BGP sessions with our peers and signed our prefixes.

However, the Internet can only be safe if the major network operators deploy Continue reading