Impact of Cache Locality

In the past, we didn't have the opportunity to evaluate as many CPUs as we do today. The hardware ecosystem was simple – Intel had consistently delivered industry leading processors. Other vendors could not compete with them on both performance and cost. Recently it all changed: AMD has been challenging the status quo with their 2nd Gen EPYC processors.

This is not the first time that Intel has been challenged; previously there was Qualcomm, and we worked with AMD and considered their 1st Gen EPYC processors and based on the original Zen architecture, but ultimately, Intel prevailed. AMD did not give up and unveiled their 2nd Gen EPYC processors codenamed Rome based on the latest Zen 2 architecture.

This made many improvements over its predecessors. Improvements include a die shrink from 14nm to 7nm, a doubling of the top end core count from 32 to 64, and a larger L3 cache size. Let’s emphasize again on the size of that L3 cache, which is 32 MiB L3 cache per Core Complex Die (CCD).

This time around, we have taken steps to Continue reading

How to fight scripting attacks

Most phishing campaigns use links to malicious scripts that infect users’ devices. Here’s how to spot and prevent them from doing damage.

The Myth of Scaling From On-Premises Data Center into a Public Cloud

Every now and then someone tries to justify the “wisdom” of migrating VMs from on-premises data center into a public cloud (without renumbering them) with the idea of “scaling out into the public cloud” aka “cloud bursting”. My usual response: this is another vendor marketing myth that works only in PowerPoint.

To be honest, that statement is too harsh. You can easily scale your application into a public cloud assuming that:

The Myth of Scaling From On-Premises Data Center into a Public Cloud

Every now and then someone tries to justify the “wisdom” of migrating VMs from on-premises data center into a public cloud (without renumbering them) with the idea of “scaling out into the public cloud” aka “cloud bursting”. My usual response: this is another vendor marketing myth that works only in PowerPoint.

To be honest, that statement is too harsh. You can easily scale your application into a public cloud assuming that:

Meaningful availability

NTT Fuels Academic Research Into Security

McAfee Gets SASE, Buys Light Point Security

Cisco Certifications changes: a short summary

Unless you’ve been living in a cave during the last nine months, specifically since Cisco Live US 2019, you should know that last Monday, February 24th, was the D-day for big changes in Cisco certifications. Here is a short summary of the major changes and what to remember about them. Changes on current certifications Associate level The various CCNA certifications have been consolidated to only one now. And the CCDA also disappears. Remaining certs at associate level are: CCNA DevNet Associate (I will talk about DevNet certs more in details…

The post Cisco Certifications changes: a short summary appeared first on AboutNetworks.net.

Ostinato – Packet Generator – Test your broadcast and mitigation strategies

I used ostinato long before when it was in early stages probably, at that point I never had any real need to use a packet generator as the place I was working was already equipped with IXIA and Spirant best in Class Packet generators.

https://ostinato.org/ – is the link

Whats the use case – Well I wanted to test LSP loadbalancing and also specific scenario of BUM traffic and how well it can be contained lets say in Switching level QFX and also VPLS level

Its doing a good job, though it started as open source, author now sells it with some minimal fee to keep up with the development costs.

You could also use scapy and i wrote a small program to do this , problem is scapy sorts of waits for some of the responses and i have not yet figured out what needs to be solved there

Testing Ostinato on QFX and its really good so far. Storm control got in and stopped transmitting any packets through the interface.

At the end, this is a nice to have tool for any sort of packet crafting and limited scale testing for proof of concept scenarios.

-Rakesh

Kernel of Truth season 3 episode 2: OCP Summit 2020

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Early March is a busy time here at Cumulus Networks and part of the reason is the Open Compute Project Summit. Kernel of Truth hosts Brian O’Sullivan and Roopa Prabhu are joined by Scott Emery, project lead at OCP. First thing the group covers— what is OCP? The conversation continues into what’s happening in the OCP community, what you can expect at the conference and more.

Guest Bios

Brian O’Sullivan: Brian currently heads Product Management for Cumulus Linux. For 15 or so years he’s held software Product Management positions at Juniper Networks as well as other smaller companies. Once he saw the change that was happening in the networking space, he decided to join Cumulus Networks to be a part of the open networking innovation. When not working, Brian is a voracious reader and has held a variety of jobs, including bartending in three countries and working as an extra in a German soap opera. You can find him on Twitter at @bosullivan00.

Roopa Prabhu: Roopa is Director of Engineering, Linux software at Cumulus Networks. At Cumulus Continue reading

Daily Roundup: Google Loves Intel’s Security Transparency

Essential People in a Wedding Professionals Networking Group

If you are a professional that provides services for weddings as a main part of your business, then becoming part of a wedding professionals networking group can help you increase your business and keep you updated on the latest wedding trends. Here is a look at some of the essential people in a wedding professionals networking group.

7 Wedding Professionals Networking Group Members

Wedding Planners 

Wedding planners are the most essential people in a wedding professionals networking group. In many cases, it is the wedding planner that finds the venue, hires the band or DJ, the cake maker, and the photographers – or at least recommends people in these professionals to the engaged couple. So you definitely want to include wedding planners in your networking group.

Bridal Shop Owners or Wedding Dress Makers

Another essential person in a wedding professionals networking group is the person who runs a bridal shop or makes wedding gowns and bridesmaid dresses, since these professionals work closely with the bride and often are asked to suggest other wedding vendors.

DJs and Wedding Bands

Almost all weddings have some type of music, so you are going to want to include DJs or wedding bands as Continue reading

CenturyLink CSO Decries Abundant, Niche Security Services

For secure data backup, here’s how to do the 3-2-1 rule right

As the number of places where we store data increases, the basic concept of what is referred to as the 3-2-1 rule often gets forgotten. This is a problem, because the 3-2-1 rule is easily one of the most foundational concepts for designing data protection. It's important to understand why the rule was created, and how it's currently being interpreted in an increasingly tapeless world.What is the 3-2-1 rule for backup? The 3-2-1 rule says there should be at least three copies or versions of data stored on two different pieces of media, one of which is off-site. Let's take a look at each of the three elements and what it addresses.[Get regularly scheduled insights by signing up for Network World newsletters.] 3 copies or versions: Having at least three different versions of your data over different periods of time ensures that you can recover from accidents that affect multiple versions. Any good backup system will have many more than three copies. 2 different media: You should not have both copies of your data on the same media. Consider, for example, Apple's Time Machine. You can fool it using Disc Utility to split your hard drive into Continue reading

Red Hat OpenStack Update Angles Toward Cloud-Native Future

Mirantis Collects Kontena Kubernetes Cast-Offs

The Birth Of The Distributed Cloud

There is a seismic shift that is about to reshape enterprise IT. …

The Birth Of The Distributed Cloud was written by Ankur Singla at The Next Platform.

Nokia Bolsters Cloud-Native Software

Computational Storage Winds Its Way Towards The Mainstream

Enterprises are said to be awash in data, and one of the problems posed by all this data is not just storing it, but processing it. …

Computational Storage Winds Its Way Towards The Mainstream was written by Daniel Robinson at The Next Platform.

Infovista’s José Duarte Outlines 5G Deployment Strategy