Gathering No MOS
If you work in the voice or video world, you’ve undoubtedly heard about Mean Opinion Scores (MOS). MOS is a rough way of ranking the quality of the sound on a call. It’s widely used to determine the over experience for the user on the other end of the phone. MOS represents something important in the grand scheme of communications. However, MOS is quickly becoming a crutch that needs some explanation.
That’s Just Like Your Opinion
The first think to keep in mind when you look at MOS data is that the second word in the term is opinion. Originally, MOS was derived by having selected people listen to calls and rank them on a scale of 1 (I can’t hear you) to 5 (We’re sitting next to each other). The idea was to see if listeners could distinguish when certain aspects of the call were changed, such as pathing or exchange equipment. It was an all-or-nothing ranking. Good calls got a 4 or even rarely a 5. Most terrible calls got 2 or 3. You take the average of all your subjects and that gives your the overall MOS for your system.
When digital systems came along, MOS took Continue reading
How Much Is Unlimited Anyway?
The big news today came down from the Microsoft MVP Summit that OneDrive is not going to support “unlimited” cloud storage going forward. This came as a blow to folks that were hoping to store as much data as possible for the foreseeable future. The conversations have already started about how Microsoft pulled a bait-and-switch or how storage isn’t really free or unlimited. I see a lot of parallels in the networking space to this problem as well.
All The Bandwidth You Can Buy
I remember sitting in a real estate class in college talking to my professor, who was a commercial real estate agent. He told us, “The happiest day of your real estate career is the day you buy an apartment complex. The second happiest day of your career is when you sell it to the next sucker.” People are in love with the idea of charging for a service, whether it be an apartment or cloud storage and compute. They think they can raise the price every year and continue to reap the profits of ever-increasing rent. What they don’t realize is that those increases are designed to cover increased operating costs, not increased money in Continue reading
Who Wants To Save Forever?
At the recent SpectraLogic summit in Boulder, much of the discussion centered around the idea of storing data and media in perpetuity. Technology has arrived at the point where it is actually cheaper to keep something tucked away rather than trying to figure out whether or not it should be kept. This is leading to a huge influx of media resources being available everywhere. The question now shifts away from storage and to retrieval. Can you really save something forever?
Another One Bites The Dust
Look around your desk. See if you can put your hands on each of the following:
* A USB Flash drive
* A DVD-RW
* A CD-ROM
* A Floppy Disk (bonus points for 5.25")
Odds are good that you can find at least three of those four items. Each of those items represents a common way of saving files in a removal format. I’m not even trying to cover all of the formats that have been used (I’m looking at you, ZIP drives). Each of these formats has been tucked away in a backpack or given to a colleague at some point to pass files back and forth.
Yet, each of these formats Continue reading
Open Networking Needs to Be Interchangeable
We’re coming up quickly on the fall meeting of the Open Networking User Group, which is a time for many of the members of the financial community to debate the needs of modern networking and provide a roadmap and use case set for networking vendors to follow for in the coming months. ONUG provides what some technology desperately needs – a solution to which it can be applied.
Open Or Something Like It
We’ve already started to see the same kind of non-open solution building that plagued the early network years creeping into some aspects of our new “open” systems. Rather than building on what we consider to be tried-and-true building blocks, we instead come to proprietary solutions that promise “magic” when it comes to configuration and maintenance. Should your network provide the magic? Or is that your job?
Magical is what the network should look like to a user, not to the admins. Think about the networking in cloud providers like AWS and MS Azure. The networking there is a very simple model that hides complexity. The average consumer of AWS services doesn’t need to know the specifics of configuration in the underlay of Amazon’s labyrinth of the Continue reading
My Thoughts on Dell, EMC, and Networking
The IT world is buzzing about the news that Dell is acquiring EMC for $67 billion. Storage analysts are talking about the demise of the 800-lb gorilla of storage. Virtualization people are trying to figure out what will happen to VMware and what exactly a tracking stock is. But very little is going on in the networking space. And I think that’s going to be a place where some interesting things are going to happen.
It’s Not The Network
The appeal of the Dell/EMC deal has very little to do with networking. EMC has never had any form of enterprise networking, even if they were rumored to have been looking at Juniper a few years ago. The real networking pieces come from VMware and NSX. NSX is a pure software networking implementation for overlay networking implemented in virtualized networks.
Dell’s networking team was practically nonexistent until the Force10 acquisition. Since then there has been a lot of work in building a product to support Dell’s data center networking aspirations. Good work has been done on the hardware front. The software on the switches has had some R&D done internally, but the biggest gains have been in partnerships. Dell works closely Continue reading
SDN Myths Revisited
I had a great time at TECHunplugged a couple of weeks ago. I learned a lot about emerging topics in technology, including a great talk about the death of disk from Chris Mellor of the Register. All in all, it was a great event. Even with a presentation from the token (ring) networking guy:
I had a great time talking about SDN myths and truths and doing some investigation behind the scenes. What we see and hear about SDN is only a small part of what people think about it.
SDN Myths
Myths emerge because people can’t understand or won’t understand something. Myths perpetuate because they are larger than life. Lumberjacks and blue oxen clearing forests. Cowboys roping tornadoes. That kind of thing. With technology, those myths exist because people don’t want to believe reality.
SDN is going to take the jobs of people that can’t face the reality that technology changes rapidly. There is a segment of the tech worker populace that just moves from new job to new job doing the same old things. We leave technology behind all the time without a care in the world. But we worry when people can’t work on that technology.
Premise vs. Premises
If you’ve listened to a technology presentation in the past two years that included discussion of cloud computing, you’ve probably become embroiled in the ongoing war of the usage of the word premises or the shift of people using the word premise in its stead. This battle has raged for many months now, with the premises side of the argument refusing to give ground and watch a word be totally redefined. So where is this all coming from?
The Premise of Your Premises
The etymology of these two words is actually linked, as you might expect. Premise is the first to appear in the late 14th century. It traces from the Old French premisse which is derived from the Medieval Latin premissa, which are both defined as “a previous proposition from which another follows”.
The appearance of premises comes from the use of premise in legal documents in the 15th century. In those documents, a premise was a “matter previously stated”. More often than not, that referred to some kind of property like a house or a building. Over time, that came to be known as a premises.
Where the breakdown starts happening is recently in technology. We live Continue reading
Tips For Presenting On Video
Giving a presentation is never an easy thing for a presenter. There’s a lot that you have to keep in mind, like pacing and content. You want to keep your audience in mind and make sure you’re providing value for the time they are giving you.
But there is usually something else you need to keep in mind today. Most presentations are being recorded for later publication. When presenting for an audience that has a video camera or two, there are a few other things you want to keep in mind on top of every other thing you are trying to keep track of.
Tip 1: Introduce Early. And Often
One of the things you really need to keep in mind for recorded presentations is time. If the videos are going to be posted to Youtube after the event the length of your presentation is going to matter. People that stumble across your talk aren’t going to want to watch an hour or two of slide discussion. A fifteen minute overview of a topic works much better from a video perspective.
Never rely on a lower third to do something you are capable of taking five seconds to say.
Keeping Continue reading
Network Firefighters or Fire Marshals?
Throughout my career as a network engineer, I’ve heard lots of comparisons to emergency responders thrown around to describe what the networking team does. Sometimes we’re the network police that bust offenders of bandwidth polices. Other times there is the Network SWAT Team that fixes things that get broken when no one else can get the job done. But over and over again I hear network admins and engineers called “fire fighters”. I think it’s time to change how we look at the job of fires on the network.
Fight The Network
The president of my old company used to try to motivate us to think beyond our current job roles by saying, “We need to stop being firefighters.” It was absolutely true. However, the sentiment lacked some of the important details of what exactly a modern network professional actually does.
Think about your job. You spend most of your time implementing change requests and trying to fix things that don’t go according to plan. Or figuring out why a change six months ago suddenly decided today to create a routing loop. And every problem you encounter is a huge one that requires an “all hands on deck” mentality Continue reading
CCIE at 50k: Software Defined? Or Hardware Driven?
Congratulations to Ryan Booth (@That1Guy_15) on becoming CCIE #50117. It’s a huge accomplishment for him and the networking community. Ryan has put in a lot of study time so this is just the payoff for hard work and a job well done. Ryan has done something many dream of and few can achieve. But where is the CCIE program today? And where will it be in the future?
Who Wants To Be A CCIE?
A lot of virtual ink has been committed to opinions in the past couple of years about how the CCIE is become increasingly irrelevant in a world of software defined DevOps focused non-traditional networking teams. It has been said that the CCIE doesn’t teach modern networking concepts like programming or building networks in a world with no CLI access. While this is all true, I don’t think it diminishes the value of getting a CCIE.
The CCIE has never been about building a modern network. It has never been focused on creating anything other than a medium-sized enterprise network in the case of the routing and switching exam. It is not a test of best practices or of greenfield deployment scenarios. Instead, it has Continue reading
The Blame Pipeline
Talk to any modern IT person about shifting the landscape of how teams work and I can guarantee you that you’ll hear a bit about DevOps as well as “siloed” organizational structures. Fingers get pointed in all directions as to the real culprit behind dysfunctional architecture. Perhaps changing the silo term to something more appropriate will help organizations sort out where the real issues lie.
You Dropped A Bomb On Me
Silos, or stovepipes, are an artifact of reporting structures of days gone by. Greg Ferro (@EtherealMind) has a great piece on the evils of ITIL. In it, he talks about how the silo structure creates blame passing issues and lack of responsibility for problem determination and solving.
I think Greg is spot on here. But I also think that the love of blame extends in the other direction too. It is one thing to have the storage team telling everyone that the arrays are working so it’s not their problem. It’s another issue entirely when the CxO-level folks come down from the High Holy Boardroom to hunt for heads when something goes wrong. They aren’t looking to root out the cause of the issue. They want someone Continue reading
This WAN Is Your WAN, This WAN Is My WAN
Straw Bales on Hill Landscape, Tuscany, Italy
Ideas coalesce all the time in every vertical. You don’t really notice it until you wake up one day and suddenly everything around you looks identical. Wireless becoming the new access layer. Flash storage taking hold of the high end performance crown. And in networking we have the dominance of all things software defined. One recent development has coming along much faster than anyone could have predicted: Software Defined Wide Area Networking (SD-WAN).
Automatic For The People
SD-WAN is a force in modern networking because people want simplicity. While Ivan does a great job of decoupling marketing from reality, people still believe that SD-WAN is the silver bullet that will fix all of their WAN woes. Even during the original discussions of SD-WAN technology at conferences like ONUG, the overriding idea wasn’t around tying sites together or driving down costs to the point of feasibility. It was all about making life easier.
How does SD-WAN manage to accomplish this? It’s all black box networking. Just like the fuel injector in your car. There’s no crying about interoperability or standards-based protocols. You just plug things in and it all works, even if Continue reading
Why Are These Slides Marked Confidential?
Imagine you’re sitting in a presentation. You’re hearing some great information from the presenter and you can’t wait to share it with your colleagues or with the wider community. You are just about to say something when you look in the corner of the slide and you see…
Confidential Information
You pause for a moment and ask the presenter if this slide is a secret or if you should consider it under NDA. They respond that this slide can be shared with no restrictions and the information is publicly available. Which raises the question: Why is a public slide marked “confidential”?
I Fought The Law
The laws that govern confidential information are legion. Confidential information is a bit different than copyrighted information or intellectual property that has been patented. In most cases, confidential information is treated as a trade secret. Trade secrets can be harmful if they are divulged, since a trade secret can’t be patented.
A great example is the formula for Coca-Cola. If they tried to patent it they would have to write down all the ingredients. While that would protect the very specific formulation of their drink it would also allow their competitors to create something extremely Continue reading
SDN and the Trough Of Understanding
An article published this week referenced a recent Hype Cycle diagram (pictured above) from the oracle of IT – Gartner. While the lede talked a lot about the apparent “death” of Fibre Channel over Ethernet (FCoE), there was also a lot of time devoted to discussing SDN’s arrival at the Trough of Disillusionment. Quoting directly from the oracle:
Interest wanes as experiments and implementations fail to deliver. Producers of the technology shake out or fail. Investments continue only if the surviving providers improve their products to the satisfaction of early adopters.
As SDN approaches this dip in the Hype Cycle it would seem that the steam is finally being let out of the Software Defined Bubble. The Register article mentions how people are going to leave SDN by the wayside and jump on the next hype-filled networking idea, likely SD-WAN given the amount of discussion it has been getting recently. Do you know what this means for SDN? Nothing but good things.
Software Defined Hammers
Engineers have a chronic case of Software Defined Overload. SD-anything ranks right up there with Fat Free and New And Improved as the Most Overused Marketing Terms. Every solution release in the last two years Continue reading
TECH.unplugged And Being Present
I wanted to let everyone know that I’m going to be taking part in an excellent event being put on by my friend Enrico Signoretti (@ESignoretti) this September. TECH.unplugged is a jam-packed day of presentations from people that cover storage, computing, and in my case networking. We’re getting together to share knowledge and discuss topics of great interest to the IT community. As excited as I am to be taking part, I also wanted to take a few moments to discuss why events like this are important to the technology community.
WORM Food
There’s no doubt that online events are becoming the standard for events in recent years. It’s much more likely to find an event that offers streaming video, virtual meeting rooms, and moderated discussions taking place in a web browser. The costs of travel and lodging are far higher than they were during the recession days of yore. Finding a meeting room that works with your schedule is even harder. It’s much easier to spin up a conference room in the cloud and have people dial in to hear what’s going on.
For factual information, such as teaching courses, this approach works rather well. That’s Continue reading
The Score Is High. Who’s Holding On?
If you haven’t had the chance to read Jeff Fry’s treatise on why the CCIE written should be dropped, do it now. He raises some very valid points about relevancy and continuing education and how the written exam is approaching irrelvancy as a prerequisite for lab candidates. I’d like to approach another aspect of this whole puzzle, namely the growing need to get that extra edge to pass the cut score.
Cuts Like A Knife
Every standardized IT test has a cut score, or the minimum necessary score required to pass. There is a surprising amount of work that goes into calculating a cut score for a standardized test. Too low and you end up with unqualified candidates being certified. Too high and you have a certification level that no one can attain.
The average cut score for a given exam level tends to rise as time goes on. This has a lot to do with the increasing depth of potential candidates as well as the growing average of scores from those candidates. Raising the score with each revision of the test guarantees you have the best possible group representing that certification. It’s like having your entire group be Continue reading
Invalidating Identity Interdiction
It used to be that a data breach was a singular event that caused massive shock and concern. Today, data breaches happen regularly and, while still shocking in scope, are starting to dull the senses. Credit card numbers, security clearances, and even illicit dating profiles have been harvested, coallated, and provided for everyone to expose. It seems to be an insurmountable problem. But why?
Data Cake
Data is a tantalizing thing. Collecting it makes life easier for customers and providers as well. Having your ordering history allows Amazon to suggest products you might like to buy. Having your address on file allows the pizza place to pull it up without you needing to read your address again. Creating a user account on a site lets you set preferences. All of this leads to a custom experience and lets us feel special and unique.
But, data is just like that slice of cheesecake you think you want for dessert. It looks so delicious and tempting. But you know it’s bad for you. It has calories and sugar and very little nutritional value. In the same manner, all that data you collect is a time bomb waiting to be exposed. The more Continue reading
Objectivity Never Rests
Being an independent part of the IT community isn’t an easy thing. There is a lot of writing involved and an even greater amount of research. For every word you commit to paper there is at least an hour of taking phone calls and interviewing leaders in the industry about topics. The rewards can be legion. So can the pitfalls. Objectivity is key, yet that is something where entire communities appear to be dividing.
Us Or Them
Communities are complex organisms with their own flow and feel. What works well in one community doesn’t work well in another. Familiarity with one concept doesn’t immediately translate to another. However, one thing that is universal across all communities is the polarization between extremes.
For instance, in the networking community this polarization is best characterized by the concept of “ABC – Anything But Cisco”. Companies make millions selling Cisco equipment every year. Writers and speakers can make a very healthy career from covering Cisco technologies. And yet there are a large number of companies and people that choose to use other options. They write about Juniper or install Brocade. They spend time researching Cumulus Linux or Big Switch Networks.
Knowing a little about Continue reading
Meraki Will Never Be A Large Enterprise Solution
Thanks to a couple of recent conversations, I thought it was time to stir the wireless pot a little. First was my retweet of an excellent DNS workaround post from Justin Cohen (@CanTechIt). One of the responses I got from wireless luminary Andrew von Nagy (@RevolutionWifi):
This echoed some of the comments that I heard from Sam Clements (@Samuel_Clements) and Blake Krone (@BlakeKrone) during this video from Cisco Live Milan in January:
During that video, you can hear Sam and Blake asking for a few features that aren’t really supported on Meraki just yet. And it all comes down to a simple issue.
Should It Just Work?
Meraki has had a very simple guiding philosophy since the very beginning. Things should be easy to configure and work without hassle for their customers. It’s something we see over and over again in technology. From Apple to Microsoft, the focus has shifted away from complexity and toward simplicity. Gone are the field of radio buttons Continue reading
Cisco and OpenDNS – The Name Of The Game?
This morning, Cisco announced their intent to acquire OpenDNS, a security-as-a-service (SaaS) provider based around the idea of using Domain Naming Service (DNS) as a method for preventing the spread of malware and other exploits. I’ve used the OpenDNS free offering in the past as a way to offer basic web filtering to schools without funds as well as using OpenDNS at home for speedy name resolution when my local name servers have failed me miserably.
This acquistion is curious to me. It seems to be a line of business that is totally alien to Cisco at this time. There are a couple of interesting opportunities that have arisen from the discussions around it though.
Internet of Things With Names
The first and most obivious synergy with Cisco and OpenDNS is around Internet of Things (IoT) or Internent of Everything (IoE) as Cisco has branded their offering. IoT/IoE has gotten a huge amount of attention from Cisco in the past 18 months as more and more devices come online from thermostats to appliances to light sockets. The number of formerly dumb devices that now have wireless radios and computers to send information is staggering.
All of those devices depend Continue reading