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Category Archives for "Networking"

Why EVPN on Cumulus Linux makes our CTO yell “Booyah!”

I started coveting IP encapsulated network virtualization back in 2005 when I was working to build a huge IP fabric. However, we needed to have layer 2 (L2) adjacencies to some servers for classic DSR load balancing. The ideal solution was to have something that looked like a bridge as far as the load balancers and servers were concerned, yet would tunnel unmodified L2 frames through the IP fabric. Alas, we were way ahead of our time.

Thank the IT gods that things have changed quite a bit in the last 12 years. Today, we as an IT community have VXLAN, which is embodied in most modern networking silicon and (a bit more importantly) realized as part of the Linux networking model so that it’s really straightforward to deploy and scale. IT geeks have a bunch of ways to build L2 domains that are extended across IP fabrics using VXLAN. There are dedicated SDN controllers, such as Contrail, Nuage, Midonet and VMware NSX; there are orchestration-hosted controllers in OpenStack Neutron and Docker Swarm; and there are simple tools like the lightweight network virtualization that we built at Cumulus Networks.

This all leads me to EVPN. We recently made EVPN available Continue reading

Ireland the best place to set up a data center in the EU

A report from a data center consulting group BroadGroup says Ireland is the best place, at least in Europe, to set up a data center. It cites connectivity, taxes and active government support among the reasons.BroadGroup’s report argued Ireland’s status in the EU, as well as its “low corporate tax environment,” make it an attractive location. It also cites connectivity, as Ireland will get a direct submarine cable system from Ireland to France—bypassing the U.K.—in 2019. The country also has a high installed base of fibre and dark fibre with further deployment planned.To read this article in full or to leave a comment, please click here

Ireland the best place to set up a data center in the EU

A report from a data center consulting group BroadGroup says Ireland is the best place, at least in Europe, to set up a data center. It cites connectivity, taxes and active government support among the reasons.BroadGroup’s report argued Ireland’s status in the EU, as well as its “low corporate tax environment,” make it an attractive location. It also cites connectivity, as Ireland will get a direct submarine cable system from Ireland to France—bypassing the U.K.—in 2019. The country also has a high installed base of fibre and dark fibre with further deployment planned.To read this article in full or to leave a comment, please click here

Worth Reading: Behind the 200g hype

In the run up to NGON 2017 in Nice, the hype machines from optical vendors have been spinning up in anticipation of one of the most reported shows in our industry. In particular, there have been several announcements around 200G recently – many touting “first” or “lowest power” or “best performance”. It is important that reporters, analysts, and customers understand what’s going on behind the hype. —ECI

The post Worth Reading: Behind the 200g hype appeared first on rule 11 reader.

Choosing Windows for your organization should get you fired

In the wake of yet another ransomware attack—this time named NotPetya—I have a special message specifically for those of you working in organizations that continue to run Microsoft Windows as the operating system on either your servers or your desktops: You are doing a terrible job and should probably be fired.  I know. That’s harsh. But it’s true. If you haven’t yet replaced Windows, across the board, you absolutely stink at your job. For years, we’ve had one trojan, worm and virus after another. And almost every single one is specifically targeting Microsoft Windows. Not MacOS. Not Linux. Not DOS. Not Unix. Windows. To read this article in full or to leave a comment, please click here

Choosing Windows for your organization should get you fired

In the wake of yet another ransomware attack—this time named NotPetya—I have a special message specifically for those of you working in organizations that continue to run Microsoft Windows as the operating system on either your servers or your desktops: You are doing a terrible job and should probably be fired.  I know. That’s harsh. But it’s true. If you haven’t yet replaced Windows, across the board, you absolutely stink at your job. For years, we’ve had one trojan, worm and virus after another. And almost every single one is specifically targeting Microsoft Windows. Not MacOS. Not Linux. Not DOS. Not Unix. Windows. To read this article in full or to leave a comment, please click here

Choosing Windows for your organization should get you fired

In the wake of yet another ransomware attack—this time named NotPetya—I have a special message specifically for those of you working in organizations that continue to run Microsoft Windows as the operating system on either your servers or your desktops: You are doing a terrible job and should probably be fired.  I know. That’s harsh. But it’s true. If you haven’t yet replaced Windows, across the board, you absolutely stink at your job. For years, we’ve had one trojan, worm and virus after another. And almost every single one is specifically targeting Microsoft Windows. Not MacOS. Not Linux. Not DOS. Not Unix. Windows. To read this article in full or to leave a comment, please click here

Choosing Windows for your organization should get you fired

In the wake of yet another ransomware attack—this time named NotPetya—I have a special message specifically for those of you working in organizations that continue to run Microsoft Windows as the operating system on either your servers or your desktops: You are doing a terrible job and should probably be fired.  I know. That’s harsh. But it’s true. If you haven’t yet replaced Windows, across the board, you absolutely stink at your job. For years, we’ve had one trojan, worm and virus after another. And almost every single one is specifically targeting Microsoft Windows. Not MacOS. Not Linux. Not DOS. Not Unix. Windows. To read this article in full or to leave a comment, please click here

DreamWorks: The animation studio’s powerful network

If you don’t know what DreamWorks is, you probably haven’t been to the movies for a couple decades. It’s a digital film studio that turns out critically acclaimed CGI animated movies like Shrek, Madagascar, and Kung Fu Panda, averaging about two a year since the turn of the century, and a major contributor to the cause of keeping kids occupied for a couple of hours.The creation of CGI movies is enormously demanding from a network standpoint. Animation and rendering require very low input latency and create huge files that have to be readily available, which poses technological challenges to the DreamWorks networking team.+ALSO ON NETWORK WORLD: What Cisco's new programmable switches mean for you + Trend: Colocation facilities provide tools to manage data center infrastructureTo read this article in full or to leave a comment, please click here

DreamWorks: The animation studio’s powerful network

If you don’t know what DreamWorks is, you probably haven’t been to the movies for a couple decades. It’s a digital film studio that turns out critically acclaimed CGI animated movies like Shrek, Madagascar, and Kung Fu Panda, averaging about two a year since the turn of the century, and a major contributor to the cause of keeping kids occupied for a couple of hours.The creation of CGI movies is enormously demanding from a network standpoint. Animation and rendering require very low input latency and create huge files that have to be readily available, which poses technological challenges to the DreamWorks networking team.+ALSO ON NETWORK WORLD: What Cisco's new programmable switches mean for you + Trend: Colocation facilities provide tools to manage data center infrastructureTo read this article in full or to leave a comment, please click here

DreamWorks: The animation studio’s powerful network

If you don’t know what DreamWorks is, you probably haven’t been to the movies for a couple decades. It’s a digital film studio that turns out critically acclaimed CGI animated movies like Shrek, Madagascar, and Kung Fu Panda, averaging about two a year since the turn of the century, and a major contributor to the cause of keeping kids occupied for a couple of hours.The creation of CGI movies is enormously demanding from a network standpoint. Animation and rendering require very low input latency and create huge files that have to be readily available, which poses technological challenges to the DreamWorks networking team.+ALSO ON NETWORK WORLD: What Cisco's new programmable switches mean for you + Trend: Colocation facilities provide tools to manage data center infrastructureTo read this article in full or to leave a comment, please click here

Reaction: The End of MPLS?

Jason Wells, over on LinkedIn, has an article up about the end of MPLS; to wit—

MPLS, according to Akkiraju, is old-hat and inefficient – why should a branch office backhaul to get their cloud data, when Internet connections might be faster – and 100X cheaper? Cisco, in acquiring Viptela, has brought Akkiraju, his company, and his perspective back into the fold, perhaps heralding the beginning of the end of Cisco’s MPLS-based offerings (or at least the beginning of the end of the mindset that they should still have an MPLS-based offering).

To being—I actually work with Aryaka on occasion, and within the larger SD-WAN world more often (I am a member of the TAB over at Velocloud, for instance). This is decidedly not a post about the usefulness or future of SD-WAN solutions (though I do have opinions there, as you might have guessed). Rather, what I want to point out is that we, in the networking industry, tend to be rather sloppy about our language in ways that are not helpful.

To understand, it is useful to back up a few years and consider other technologies where our terms have become confused, and how it has impacted our Continue reading

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