Internets of Interest for 2nd December 2012


Collection of useful, relevant or just fun places on the Internets for 2nd December 2012 and a bit commentary about what I’ve found interesting about them:

SDN Myth Busters: We Test 5 Common SDN Myths Propagated by Vendors – Good points about SDN market hype – and there is alot of that around…..

The best part about these myths is that they are part of what happens when a technology is being commercialized — and most of them are harmless things vendors tell early customers to get them comfortable with a purchase decision that no-one else has ever made — so our advice — is take each claim with a grain of salt and valid the claims with 3rd parties to separate the white-lies from mis-information, and repeatedly ask questions for detailed SDN customer success stories before you make the final vendor selection and write that check.

Follow the Yellow Brick Road to the Software-Defined Future – @SFoskett – Stephen Foskett, Pack Rat – Stephen Foskett points out the VMware’s big push on the software defined data centre is egocentric masturbation – I agree

The Software-Defined Datacenter is a great concept, but it just won’t work. The big enterprise companies will never allow VMware (and daddy EMC) to commoditize them out of existence, so useful implementations will be rarer than ruby slippers. The best we can hope for is point enhancements to enable greater virtual machine mobility through SDN and improved storage integration.

Bad Idea List: ITU UN Plan To Regulate The Internet – Brent Salisbury takes a closer look at the ITU’s attempt to takeover regulation of the Internet – effectively making it part of the UN Administration. A good roundup of the the discussion.

This makes SOPA look like a parking ticket. The ITU is trying to solve a non-existent problem, that is a major red flag. They are preying on fear, uncertainty and doubt on the risk to the global economy if the Internet continues to be unregulated. The problem is, the Internet itself is the most successful distributed technology in history. Any attempt to centralize policy will end in miserable expensive failure.

Stackable Data Center Switches? Do the Math! « by @ioshints – Stackable switches are a good idea that never quite works out in real life. The trade offs to make “stacking” possible always lead to limits. Ivan highlights one of the current problems:

Conclusion: daisy-chained stackable switches with 100+Gbps stacking cables were probably a great idea in 1GE world; be careful when using switch stacks in 10GE world. You might have to look elsewhere if you want to reduce the management overhead of your ToR switches.

Presentation BINGO | The Networking Nerd – Tom catpures the zeitgeist of most startup presetnations. Funny too

After you get all five of these in your presentation, you can proudly jump up and shout “BINGO!!!” and then leave. You don’t need to know any more about the company from this point forward. Who cares what they make? Do you really want to know how they handle upgrades or licensing or costs? Probably not. Y

VMware vCloud Networking Poster | VMware vSphere Blog – VMware Blogs – Great resource from VMware –

This poster is a reference to all things related to vSphere Standard Switch (VSS), vSphere Distributed Switch (VDS), and Virtual Extensible Local Area Network (VXLAN) technology. It provides you information on the different components, terminologies and parameters of VSS, VDS, and VXLAN. It also explains the advanced features of VDS and discusses some best practices.

Data Center: VCS Fabrics and NAS Storage –… | Brocade Communities – Brocade publishes some templates on Ethernet storage networking. It’s a bit slim but it’s a start. (Still no PDF though).

Scale-out NAS Primer-VCS Fabric for Petabyte Data Stores
Data Center Infrastructure, Design Guide-Scale-out NAS Storage Templates
Data Center Solutions, Design Guide-EMC Isilon Scale-out NAS and VMware vSphere 5

Load Balancing using vCloud Networking and Security 5.1 Edge | VMware vSphere Blog – VMware Blogs – VMware blog on using vShield as a IP or TCP load balancer. You must have a dedicated VM so the performance might be limited to a gigabit or so but that’s enough for most use cases in Enterprise networks. Time to sell F5 stock.

Network virtualization with VXLAN | Vincent Bernat – Full blown lab deploying VXLAN using XORP routers in multiple KVM VMs over PIM-SM core.

Hat Tip: Wes Felter at

How likely is a DDoS Armageddon attack? | DDoS and Security Reports | Arbor Networks Security Blog – Arbor Networks (a carrier class provider of DDOS protection) discusses topics around whether the sheer volume of modern DDOS attacks could take out the entire Internet. Risk is high, but chances are low ….. or not.

That brings me back to the question on whether an Armageddon attack is possible that can not only overwhelm the end victim but also all the Internet providers in between. Based on the current Internet environment, this is all too possible. The first thing that you need to consider what the available bandwidth is to generate an attack. There have been botnets discovered that have contained more than 1M infected hosts. Assuming an average of 1 Mbps worth of upstream access per host, a conservative estimate based on the number of broadband subscribers, 4G and 3G users deployed in the world, a 1M host botnet could generate an attack of 1 Tbps.