SecureNet: Simulating a Secure Network with Mininet

I have been working with OpenStack(devstack) for a while and I must say it is quite convenient to bring up a test setup using devstack. At times, I still feel it is an overkill to use devstack for a quick test to verify your understanding of the network/security rules/routing etc. This is where Mininet shines. … Continue reading SecureNet: Simulating a Secure Network with Mininet

NSX-Powered Credit Union Shifts Focus to Speed and Innovation

Personal banking sure isn’t what it used to be. Thankfully.

When is the last time you went to a bank? My trips are so infrequent that I actually enjoy the experience as a change of pace. That’s because normally, I get to transfer money or deposit a check not only online, but from my phone. And things in the banking sector aren’t slowing down, they’re speeding up, as new digital upstarts create competition and a pressure to innovate and make customers’ lives easier.

Still, not too long ago, the banking industry was still feeling the shockwaves of the financial crisis. Investments across the industry were tight, meaning more had to be done with less – a story many of us who have had roles in IT can relate to. So when Amy Hysell took on the role of CIO at the Arizona Federal Credit Union (AZFCU), she decided to take a fresh approach. To compete in this fast-moving industry, she stepped back and took a look at on how to enable speed and innovation, while keeping security as the top priority, and also without sacrificing cost efficiency.

Fast forward to today, and a peek at some of AZFCU’s services quickly Continue reading

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Worth Reading: NVMe for Data Centers

The Non-Volatile Memory Express (NVMe) specification defines a new method to access solid-state drives (SSDs) over a PCIe bus, and it’s forecasted to grow exponentially over the next few years thanks to its performance advantages and lower latencies compared with legacy protocols (such as SATA). NVMe-enabled storage infrastructures are not only seeing wide deployment, but they’re now entering other data center areas that were once typically reserved for legacy HDDs and SSDs. NVMe has become an agent for next-generation data centers. To understand this evolution, it’s important to review the history and examine some of the new application workloads that are being transformed by this protocol. —Anand Jayapalan @ The Data Center Journal

The post Worth Reading: NVMe for Data Centers appeared first on rule 11 reader.

BGP Attribute : Multi-Exit Discriminator or Known as MED

Today I am going to talk about the other BGP attribute which is widely used for the inbound traffic to come in to your network. MED is generally set by the service provider and the lower value of the MED will be selected as a preference route for incoming traffic into the network.

MED attribute is exchanged between ASs, but a MED attribute that comes into an AS does not leave the AS. When an update enters the AS with a certain MED value, that value is used for decision making within the AS. When BGP sends that update to another AS, the MED is reset to 0.

MED is called as optional non-transtive attribute and the router compares MED attributes for paths from external neighbors that are in the same AS. Hope you got the exact point of the MED use in the BGP enabled network. Lets take an topology and the configuration part of the MED. The topology and the IP addresses showing in this example is taken only for the demo purposes and have no relevance with any of the live or the enterprise network.

Fig 1.1- BGP Attribute- MED
 Configurations on Router A  

Save on School Supplies With Amazon’s Back To School Deals – Deal Alert

If you already know this page exists, let it serve as a reminder. Amazon's back to school deals page centralizes their best discounts on everything from laptops to calculators to pencils and batteries. If you still have supplies left to buy, there's plenty of time. Grab your list, fill your cart, and start putting check marks on your list while also saving some cash. Visit Amazon's back to school Electronics deals page here, or their main back to school deals page right here.To read this article in full or to leave a comment, please click here

Imanis Data focuses on big data backup and recovery

Imanis Data, formerly known as Talena, released version 3.0 of its eponymous backup and recovery platform last week with emphasis on supporting very large datasets that are being generated in the era of big data. The company notes that three out of four companies have experienced a data loss over the last year, which carries an average cost of $900,000 and weeks of downtime. With Imanis Data 3.0, the company claims its backup architecture backs up, recovers and replicates terabyte and petabyte-sized data sets up to 10 times faster than any other solution on the market, minimizing the impact of data loss by reducing costly days and weeks of downtime to minutes and hours and reducing secondary storage costs by up to 80%. To read this article in full or to leave a comment, please click here

Imanis Data focuses on big data backup and recovery

Imanis Data, formerly known as Talena, released version 3.0 of its eponymous backup and recovery platform last week with emphasis on supporting very large datasets that are being generated in the era of big data. The company notes that three out of four companies have experienced a data loss over the last year, which carries an average cost of $900,000 and weeks of downtime. With Imanis Data 3.0, the company claims its backup architecture backs up, recovers and replicates terabyte and petabyte-sized data sets up to 10 times faster than any other solution on the market, minimizing the impact of data loss by reducing costly days and weeks of downtime to minutes and hours and reducing secondary storage costs by up to 80%. To read this article in full or to leave a comment, please click here

Imanis Data focuses on big data backup and recovery

Imanis Data, formerly known as Talena, released version 3.0 of its eponymous backup and recovery platform last week with emphasis on supporting very large datasets that are being generated in the era of big data. The company notes that three out of four companies have experienced a data loss over the last year, which carries an average cost of $900,000 and weeks of downtime. With Imanis Data 3.0, the company claims its backup architecture backs up, recovers and replicates terabyte and petabyte-sized data sets up to 10 times faster than any other solution on the market, minimizing the impact of data loss by reducing costly days and weeks of downtime to minutes and hours and reducing secondary storage costs by up to 80%. To read this article in full or to leave a comment, please click here

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What is GLBP and where GLBP should be used ?

GLBP stands for Gateway Load Balancing Protocol. In this article, I will explain where GLBP is used , where it shouldn’t be used with the topologies. GLBP is a Cisco preparatory protocol. In most networks, design requirements might be to use only standard based protocols. If that is the case, GLBP is not a standard […]

The post What is GLBP and where GLBP should be used ? appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Quick Reference to Common AWS CLI Commands

This post provides an extremely basic “quick reference” to some commonly-used AWS CLI commands. It’s not intended to be a deep dive, nor is it intended to serve as any sort of comprehensive reference (the AWS CLI docs nicely fill that need).

This post does make a couple of important assumptions:

  1. This post assumes you already have a basic understanding of the key AWS concepts and terminology, and therefore doesn’t provide any definitions or explanations of these concepts.

  2. This post assumes the AWS CLI is configured to output in JSON. (If you’re not familiar with JSON, see this introductory article.) If you’ve configured your AWS CLI installation to output in plain text, then you’ll need to adjust these commands accordingly.

I’ll update this post over time to add more “commonly-used” commands, since each reader’s definition of “commonly used” may be different based on the AWS services consumed.

To list SSH keypairs in your default region:

aws ec2 describe-key-pairs

To use jq to grab the name of the first SSH keypair returned:

aws ec2 describe-key-pairs | jq -r '.KeyPairs[0].KeyName'

To store the name of the first SSH keypair returned in a variable for use in later commands:

KEY_NAME=$(aws  Continue reading
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