SDN Internet Router Is in Production on Software Gone Wild
You might remember the great idea David Barroso had last autumn – turn an Arista switch into an Internet edge router (SDN Internet Router – SIR). In the meantime, he implemented that solution in production environment serving high-speed links at multiple Internet exchange points. It was obviously time for another podcast on the same topic.
Read more ...DH-1024 in Bitcoin terms
The recent paper on Diffie-Hellman "precomputation" estimates a cost of 45-million core-years. Of course, the NSA wouldn't buy so many computers to do the work, but would instead build ASICs to do the work. The most natural analogy is how Bitcoin works. Bitcoin hashes were originally computed on CPU cores, then moved to graphics co-processors, then FPGAs, then finally ASICs.
The current hashrate of Bitcoin 460,451,594,000 megahashes/second. An Intel x86 core computes about 3-megahashes/second, or 153,483,864,667 CPU cores. Divided this by 45-million core-years for precomputing 1024bit DH, and you get 3410 DH precomputations per year. Thus, we get the following result:
The ASIC power in the current Bitcoin network could do all the necessary precomputations for a Diffie-Hellman 1024 bit pair with 154 minutes worth of work. Or, the precomputation effort is roughly equal to 15 bitcoin blocks, at the current rate.(Update: I did some math wrong, it's 154 minutes not 23 minutes)
Another way of comparing is by using the website "keylength.com", which places the equivalent effort of cracking 1024 DH with 72 to 80 bits of symmetric crypto. At the current Bitcoin rate, 72 bits of crypto comes out to 15 bitcoin blocks, Continue reading
Show 259: Don’t Forget The Basics
In Packet Pushers Weekly Show #259 (two hundred and fifty nine, really?), Greg Ferro and Ethan Banks have a wide ranging discussion about several different things that have been on their minds. Perhaps the biggest idea in this discussion is "Don't forget the basics."
The post Show 259: Don’t Forget The Basics appeared first on Packet Pushers.
Dell/EMC Deal Puts Crosshairs on HP. Who Else?
With layoffs and upcoming split, HP should be sweating this mega-merger, one analyst believes.
BTI Integrates NFV Capability Into Its Optical Platform
Service providers can use BTI's optical platform to also virtualize some central office functions.
Would I take Wireshark training?
If the buck stops with you when it comes to troubleshooting strange and bizarre application behavior, you’ll want to be able to use a packet capture tool effectively. Wireshark is ubiquitous; most network engineers use it. Wireshark has an active user and development community. Plus, there is a commercial variant through Riverbed if you care to go that route. Therefore, I view Wireshark as a safe packet analysis tool to spend time learning intimately.PQ Show 60: The IO Visor Project And Linux Networking
IO Visor is an open source project to bring a programmable data plane to the Linux kernel. We find out how it works and how it compares to other projects to optimize Linux for networking.
The post PQ Show 60: The IO Visor Project And Linux Networking appeared first on Packet Pushers.
What’s inside your containers? Why visibility and control are critical for container security
This vendor-written tech primer has been edited by Network World to eliminate product promotion, but readers should note it will likely favor the submitter’s approach.
As organizations turn to containers to improve application delivery and agility, the security ramifications of the containers and their contents are coming under increased scrutiny.
Container providers Docker, Red Hat and others are moving aggressively to reassure the marketplace about container security. In August Docker delivered Docker Content Trust as part of the Docker 1.8 release. It uses encryption to secure the code and software versions running in Docker users’ software infrastructures. The idea is to protect Docker users from malicious backdoors included in shared application images and other potential security threats.
To read this article in full or to leave a comment, please click here
REPORT: OpenStack and More – Cloud Management, Orchestration and DevOps
OpenStack got you down? Get clarity on cloud management and orchestration today with a copy of our report!
One year at Plexxi and the Future of Networking
It’s almost time to celebrate my one-year work anniversary with Plexxi, coming up next month. When I began here I set out with a grand vision set on building a simply better network. I’m grateful to the entire Plexxi team for their commitment and hard work to make many of our goals a reality. I believe that today we are better and stronger as a company. We have meaningful industry partnerships like our distribution agreement with Arrow, groundbreaking product developments and more financing to make our goals and growth plans a reality.
Last week I spoke with Chris Talbot, a writer at FierceEnterpriseCommunications and had the opportunity to reflect on my time with Plexxi so far. Chris and I discussed what led me to join Plexxi, why I believe in what we’re doing and why we’re pioneering a new path for networks that is going to lead the industry for years to come.
We are making great strides and I’m excited about the momentum we have going for us right now and what the future holds. You can find Chris’ article, “The Future of Networking is Photonic Underlays” here. Let me know what you think.
The post Continue reading
Docomo’s vEPC Is Nearing Launch With Ericsson, Fujitsu, & NEC
The NFV project looks ready to launch by March, Docomo tells the SDN & OpenFlow World Congress.
HP Is Shipping Unicorns Now: 10GBASE-T SFP+ Module
It's long been said that we'll never see an SFP+ transceiver for 10GBASE-T media. Too much power, too small package, too much heat, etc...I'm not sure that never is quite right. There's this wonderful/horrible contraption:
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| Dawnray SFP+ module. Photo found here. |
It's huge. It's ugly. Its covered with fins, so it must be hot. The data sheet says it consumes 7 Watts. Where's it getting 7W? Not from the SFP+ interface on the switch... Note the power cord attached to the module. It uses a wall wart!
This is not an elegant solution, but 10GBASE-T is hard, and this is the best we've got.
Until now.
/u/asdlkf recently pointed out on reddit that HP have published a data sheet1 for a much more elegant SFP+ module for 10GBASE-T.
There were rumors that this module was going to have a giant heatsink and protrude far beyond the SFP+ slot, but it turns out that's not the case. It looks really good, and it's only a bit longer than some 1000BASE-T modules that I have kicking around the office.
The module uses only 2.3W (no wall wart required, but plugging in lots of them will still tax most switches), Continue reading
There were rumors that this module was going to have a giant heatsink and protrude far beyond the SFP+ slot, but it turns out that's not the case. It looks really good, and it's only a bit longer than some 1000BASE-T modules that I have kicking around the office.
The module uses only 2.3W (no wall wart required, but plugging in lots of them will still tax most switches), Continue reading
Getting to Know Peter Sprygada, Director of Engineering
Knowing the members of our Ansible community is important to us, and we want you to get to know the members of our team in (and outside of!) the Ansible office. Stay tuned to the blog to learn more about the people who are helping to bring Ansible to life.
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This week we're happy to introduce you to Peter Sprygada, who recently joined Ansible to tackle all things networking. Prior to joining us at Ansible, Peter built a long career building and operating next generation network infrastructures and most recently ran the EOS+ CS team at Arista focusing on the integration of network operations with DevOps methodologies. |
What’s your role at Ansible?
Mostly my days revolve around working closely with customers, partners and the fantastic Ansible community to bring more robust support for networking devices into Ansible and Ansible Tower. This includes applying Ansible to help evolve DevOps methodologies to solve problems associated with running network operations teams.
What exciting Ansible networking projects can you tell us about?
To start, we have been working closely with our network partners to transition many of the great modules that have been available in the wild and make them available to Continue reading