|By Michael Bushong||
|July 21, 2014 06:00 AM EDT||
Whenever a new networking platform is evaluated, one of the early sales calls includes a packet walkthrough. In excruciating detail, someone walks the customer through the path a packet takes from ingress port, through the device, across the switching or routing ASIC, and back down to the egress port. The technical deep dive frequently includes internals that even the vendor engineers are not all familiar with.
Some people will justify the depth by talking about troubleshooting complex systems. Others will pull on random technical details that suggest one platform is better than another in some regard or under some set of circumstances. Others will actually parrot some of the vendor’s marketing efforts with claims of flexibility, scalability, or extensibility.
While all of these are absolutely valid, they actually miss the biggest reason the packet walkthrough is a ubiquitous part of every selling motion.
We networking gearheads are a skeptical lot. We learned long ago that listening to someone and taking their words for granted was a short path to operational hell. Their words might have sounded true but their promises rang hollow. The platform, or even the architecture, did not perform as advertised. And because the result of a network failure is catastrophically worse than any other infrastructure failure, we have collectively vowed to look at every opportunity with a sideways glance from a somewhat disbelieving perspective.
Trust but verify
The real reason that we evaluate in such detail new platforms and solutions is not because of the inherent troubleshooting value of examining the architecture. Nor is it because we can determine with any certainty what the scaling limits are based on a cursory glance at the internals of a system. We examine architectures in detail because it allows us to put the vendor under a bit of scrutiny. If they stand up to a few somewhat randomly placed questions (less random if you have had particularly painful issues in the past), then we believe with a bit more certainty other claims that are made.
I don’t mention this because I think this is a bad way to do things, mind you. Rather, I bring this up because the collective psyche of the networking buyer needs to be understood if architectural advances like SDN and abstractions are to bring any any real value.
Control freaks and abstraction
Networking generally has operated through meticulous control for decades. Network management via configuration knob puts a ton of power at the hands of the network architect. Behavior can be precisely specified. And when something goes wrong, it can be queried to surmise the cause.
A shift to abstractions might make things easier in terms of actual physical workload (how much typing there is), but it comes with a gigantic leap of faith. Control freaks might complain about how much effort things are, but they absolutely cringe at the thought of giving any of that work up lest something go wrong.
When behavior is specified by an abstraction (as with an edge policy abstraction), not only must the syntax be correct but also the translation of that abstraction into underlying behavior. The former is easy to verify, but the latter requires a bit of faith on behalf of the user that the vendor has done the right thing under the hood.
A peek under the hood
There are already a bunch of industry efforts around SDN and abstractions. Whether it’s vendor-specific (as with Cisco’s ACI) or a part of open source (OpenDaylight, for example), there are a number of movements that either focus on or include some abstraction as part of the solution. But if our past teaches us anything, it is that network architects are not happy with a basic understanding of what the abstractions do. They require additional information so they have at least some concept of how they do it.
It would seem that people peddling abstractions will ultimately need to provide the equivalent of a packet walkthrough. With platforms, this is easy. Where does the packet physically enter the device, and where does it leave? But with abstractions, the equivalent is a bit harder.
Initially, this dynamic favors abstractions that merely replace well-understood configuration with something less. The abstraction walkthrough for a replacement is essentially an expansion of the abstraction into the underlying configuration knobs. Think of this as more indirection than abstraction, more similar to header files than anything else.
But if abstractions are about more than saving keystrokes, this type of walkthrough will not permit itself for even slightly more complex scenarios. This leaves the abstraction salesperson in a tough spot: how do you demonstrate that something works if you cannot provide a meaningful look at the internals?
Behavior determines success
The long-term answer here is going to necessarily fall to actual behavior. The creators of abstractions will need to show in the affirmative that the network (or the applications) behave appropriately when an abstraction is used. This might seem obvious, but the implications are actually quite profound.
For networks today, there are lots of ways to verify specific state in the network (BGP neighbors, interface stats, and so on). And when there is no network state, the configuration itself serves as the check. But what if that configuration is not there?
In the long term, the infrastructure broadly (including but not limited to the network) will need to be instrumented with meaningful abstractions in mind. If abstractions become common around managing edge policy, there will need to be additional ways to instrument specific applications, tenants, and flows. For example, if abstractions allow network engineers to specify a particular application as PCI compliant, then there might need to be ways to verify PCI compliance via command.
The bottom line
The abstraction market initially will be focused on keyboard time reduction. That is a fine place to start, and it is easy to verify. But if the real value of abstractions is in the removal of complexity (not just masking it) and the increased collaboration of infrastructure, then abstraction salespeople are going to need to think through the post-sales elements of their products. Those that do this early will certainly find that having an abstraction walkthrough shortens the evaluation time for new solutions. And if no one else has done this, the existence of such a walkthrough could prove a killer element of the product sales cycle.
[Today’s fun fact: Right-handed people tend to chew food on the right side of their mouths, and lefties on the left side.]
The post Network abstractions need equivalent of packet walkthrough appeared first on Plexxi.
SYS-CON Events announced today that G2G3 will exhibit at SYS-CON's @DevOpsSummit Silicon Valley, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Based on a collective appreciation for user experience, design, and technology, G2G3 is uniquely qualified and motivated to redefine how organizations and people engage in an increasingly digital world.
Sep. 4, 2015 11:00 PM EDT Reads: 560
In their Live Hack” presentation at 17th Cloud Expo, Stephen Coty and Paul Fletcher, Chief Security Evangelists at Alert Logic, will provide the audience with a chance to see a live demonstration of the common tools cyber attackers use to attack cloud and traditional IT systems. This “Live Hack” uses open source attack tools that are free and available for download by anybody. Attendees will learn where to find and how to operate these tools for the purpose of testing their own IT infrastructu...
Sep. 4, 2015 09:30 PM EDT Reads: 534
DevOps Summit, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development...
Sep. 4, 2015 07:00 PM EDT Reads: 1,663
Too often with compelling new technologies market participants become overly enamored with that attractiveness of the technology and neglect underlying business drivers. This tendency, what some call the “newest shiny object syndrome,” is understandable given that virtually all of us are heavily engaged in technology. But it is also mistaken. Without concrete business cases driving its deployment, IoT, like many other technologies before it, will fade into obscurity.
Sep. 4, 2015 06:45 PM EDT Reads: 455
SYS-CON Events announced today that DataClear Inc. will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. The DataClear ‘BlackBox’ is the only solution that moves your PC, browsing and data out of the United States and away from prying (and spying) eyes. Its solution automatically builds you a clean, on-demand, virus free, new virtual cloud based PC outside of the United States, and wipes it clean...
Sep. 4, 2015 05:30 PM EDT Reads: 507
With the proliferation of connected devices underpinning new Internet of Things systems, Brandon Schulz, Director of Luxoft IoT – Retail, will be looking at the transformation of the retail customer experience in brick and mortar stores in his session at @ThingsExpo. Questions he will address include: Will beacons drop to the wayside like QR codes, or be a proximity-based profit driver? How will the customer experience change in stores of all types when everything can be instrumented and a...
Sep. 4, 2015 04:15 PM EDT Reads: 534
SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
Sep. 4, 2015 03:30 PM EDT Reads: 982
Any Ops team trying to support a company in today’s cloud-connected world knows that a new way of thinking is required – one just as dramatic than the shift from Ops to DevOps. The diversity of modern operations requires teams to focus their impact on breadth vs. depth. In his session at DevOps Summit, Adam Serediuk, Director of Operations at xMatters, Inc., will discuss the strategic requirements of evolving from Ops to DevOps, and why modern Operations has begun leveraging the “NoOps” approa...
Sep. 4, 2015 03:30 PM EDT Reads: 470
Organizations from small to large are increasingly adopting cloud solutions to deliver essential business services at a much lower cost. According to cyber security experts, the frequency and severity of cyber-attacks are on the rise, causing alarm to businesses and customers across a variety of industries. To defend against exploits like these, a company must adopt a comprehensive security defense strategy that is designed for their business. In 2015, organizations such as United Airlines, Sony...
Sep. 4, 2015 03:30 PM EDT Reads: 545
To assist customers with legacy Windows Server 2003 that is no longer supported by Microsoft, Racemi has introduced fixed price packages for upgrading and migrating Windows Server 2003 servers to either Windows 2008 R2 or Windows 2012 R2 and the choice of Amazon Web Services (AWS) or SoftLayer cloud. "We're extending a lifeline by upgrading the legacy servers to more modern Windows Server platforms while taking advantage of cloud computing," said James Strayer, vice president of product managem...
Sep. 4, 2015 02:12 PM EDT
All major researchers estimate there will be tens of billions devices - computers, smartphones, tablets, and sensors - connected to the Internet by 2020. This number will continue to grow at a rapid pace for the next several decades. With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo, November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Learn what is going on, contribute to the discussions, and e...
Sep. 4, 2015 02:00 PM EDT Reads: 239
In today's digital world, change is the one constant. Disruptive innovations like cloud, mobility, social media, and the Internet of Things have reshaped the market and set new standards in customer expectations. To remain competitive, businesses must tap the potential of emerging technologies and markets through the rapid release of new products and services. However, the rigid and siloed structures of traditional IT platforms and processes are slowing them down – resulting in lengthy delivery ...
Sep. 4, 2015 01:45 PM EDT Reads: 656
SYS-CON Events announced today that IceWarp will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. IceWarp, the leader of cloud and on-premise messaging, delivers secured email, chat, documents, conferencing and collaboration to today's mobile workforce, all in one unified interface
Sep. 4, 2015 12:00 PM EDT Reads: 504
SYS-CON Events announced today that Micron Technology, Inc., a global leader in advanced semiconductor systems, will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Micron’s broad portfolio of high-performance memory technologies – including DRAM, NAND and NOR Flash – is the basis for solid state drives, modules, multichip packages and other system solutions. Backed by more than 35 years of tech...
Sep. 4, 2015 12:00 PM EDT Reads: 298
As more and more data is generated from a variety of connected devices, the need to get insights from this data and predict future behavior and trends is increasingly essential for businesses. Real-time stream processing is needed in a variety of different industries such as Manufacturing, Oil and Gas, Automobile, Finance, Online Retail, Smart Grids, and Healthcare. Azure Stream Analytics is a fully managed distributed stream computation service that provides low latency, scalable processing of ...
Sep. 4, 2015 11:45 AM EDT Reads: 404
U.S. companies are desperately trying to recruit and hire skilled software engineers and developers, but there is simply not enough quality talent to go around. Tiempo Development is a nearshore software development company. Our headquarters are in AZ, but we are a pioneer and leader in outsourcing to Mexico, based on our three software development centers there. We have a proven process and we are experts at providing our customers with powerful solutions. We transform ideas into reality.
Sep. 4, 2015 11:45 AM EDT Reads: 587
17th Cloud Expo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterprises ar...
Sep. 4, 2015 11:00 AM EDT Reads: 1,619
In 2014, the market witnessed a massive migration to the cloud as enterprises finally overcame their fears of the cloud’s viability, security, etc. Over the past 18 months, AWS, Google and Microsoft have waged an ongoing battle through a wave of price cuts and new features. For IT executives, sorting through all the noise to make the best cloud investment decisions has become daunting. Enterprises can and are moving away from a "one size fits all" cloud approach. The new competitive field has ...
Sep. 4, 2015 11:00 AM EDT Reads: 196
Introducing Containers & Microservices Bootcamp at @CloudExpo Silicon Valley | #Containers #Microservices
SYS-CON Events announced today the Containers & Microservices Bootcamp, being held November 3-4, 2015, in conjunction with 17th Cloud Expo, @ThingsExpo, and @DevOpsSummit at the Santa Clara Convention Center in Santa Clara, CA. This is your chance to get started with the latest technology in the industry. Combined with real-world scenarios and use cases, the Containers and Microservices Bootcamp, led by Janakiram MSV, a Microsoft Regional Director, will include presentations as well as hands-on...
Sep. 4, 2015 11:00 AM EDT Reads: 434
SYS-CON Events announced today that the "Second Containers & Microservices Expo" will take place November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Containers and microservices have become topics of intense interest throughout the cloud developer and enterprise IT communities.
Sep. 4, 2015 10:45 AM EDT Reads: 667