|By Marten Terpstra||
|February 23, 2014 12:00 PM EST||
It is human nature to try and relate new information and new ways of doing things to something that we know, something we are familiar with. Often when we talk about the way we fit traffic onto a Plexxi mesh network, the reaction is “I know what you mean, you are doing traffic engineering like we (used to) do in MPLS”. The response to that is usually “kinda, but not really”.
In the most basic meaning, everything that has to do with the placement of traffic onto links, routing and forwarding choices being programmed, etc., would be part of Traffic Engineering. But like too many words and phrases in our networking dictionary, traffic engineering has taken on a very specific meaning, very much related to the way traffic is mapped onto MPLS and like networks. For us, its a bit different. We build ethernet and IP networks that use packet by packet forwarding rules and while individual flows may have a hop by hop crafted path through the network, a very large portion of traffic travels using regular L2 and L3 forwarding tables. We just construct those tables differently than the typical network. Dare I say we engineer the tables to ensure forwarding occurs the way we calculated it to go.
Mike Bushong yesterday talked about equal cost paths and shortest path algorithms. We have discussed our views several times in this and other forums, and it is because we have a fundamental believe that it can be done better. A Plexxi network consists of switches that are connected together using a variety of optical technologies with a mesh of 10GbE Ethernet connections. These point to point connections between switches for the basis of the L2 and L3 connectivity that exists, on top of which Plexxi Control Engineers the forwarding behavior of the fabric (skipping the part where Control can actually change those point to point connections for now).
So far this still smells like Traffic Engineering. I have a network, I have traffic I need to put on the network. The goal is simple, maximize the available network capacity. Use it as best as you can. All of it. While providing the best possible service for the providers and consumers of the traffic. But the way we do it is just a little different.
Our fabric is engineered based on a set of information sources. The most obvious of those sources is the actual network that is constructed. How our switches are connected together, and what initial L1/L2 topography (mesh of point to point networks) is created as part of our default connectivity. Our second source of information is the set of Affinities defined for the network. What application relationships are explicitly described, what is the requested network behavior for them and most importantly, where can I find these application components on the network. The latter is learned of course, not defined by the operator. The third component is actual traffic utilization on the fabric. What links are in use and how much of it.
These three inputs go into what we call the fitting engine. Heavy duty graph theory that we have blogged about before. The goal: resolve all Affinity constraints on top of the network infrastructure provided, and provide Non Equal Weighted Egress Based Multipath Trees for all non Affinitized traffic to ensure it gets the best service and spreads traffic as best as we can across all available paths between any two points in the fabric. That last one is a mouthful and not really what we call it, but at NFD7 yesterday I used it jokingly as the best descriptive term that articulates all it actually is. Last, a set of backup paths are calculated for link and switch failures. This can number 100s of paths easily. The results of these calculations are passed back to the switches in a multi phase commit fashion, ensuring that all switches will start using the same forwarding directions at the same time. Some of these are used in the switches as explicit flow like rules (similar to perhaps OpenFlow), others are used to populate forwarding tables when new MAC addresses are learned, or ARPs are resolved.
The result is a very carefully constructed description of connectivity from anywhere to anywhere on the fabric, satisfying the needs of Affinities, and balancing the remainder of the traffic across all available bandwidth. And once completed, the next set of traffic statistics that are entered into the overall traffic modeling will provide an even better tuned view of reality. When new Affinities are defined, you can run partial computations to just layer these new requirements on top of the previously calculated topologies.
Traffic Engineering has a very 90’s meaning attached to it. At least for me it does. Maybe this is Traffic Engineering 3.0 for the Datacenter and Data Center Interconnects (see last week’s blog post). Maybe the name does not matter. It’s a very mathematically engineered fabric. Mike said it well at NFD7: we are really a math company, masquerading as a software company, masquerading as a hardware company.
[Today's fun fact: Coconuts kill more people than sharks. Each year 150 people die from falling coconuts. Umbrellas make for safer shade than coconut trees.]
The post Fabric Engineering is more than Traffic Engineering appeared first on Plexxi.
SYS-CON Events announced today that Embotics, the cloud automation company, will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Embotics is the cloud automation company for IT organizations and service providers that need to improve provisioning or enable self-service capabilities. With a relentless focus on delivering a premier user experience and unmatched customer support, Embotics is the fas...
Oct. 26, 2016 02:00 PM EDT Reads: 987
SYS-CON Events announced today that MathFreeOn will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. MathFreeOn is Software as a Service (SaaS) used in Engineering and Math education. Write scripts and solve math problems online. MathFreeOn provides online courses for beginners or amateurs who have difficulties in writing scripts. In accordance with various mathematical topics, there are more tha...
Oct. 26, 2016 01:30 PM EDT Reads: 1,106
SYS-CON Events announced today that Niagara Networks will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Niagara Networks offers the highest port-density systems, and the most complete Next-Generation Network Visibility systems including Network Packet Brokers, Bypass Switches, and Network TAPs.
Oct. 26, 2016 01:15 PM EDT Reads: 1,389
The best way to leverage your Cloud Expo presence as a sponsor and exhibitor is to plan your news announcements around our events. The press covering Cloud Expo and @ThingsExpo will have access to these releases and will amplify your news announcements. More than two dozen Cloud companies either set deals at our shows or have announced their mergers and acquisitions at Cloud Expo. Product announcements during our show provide your company with the most reach through our targeted audiences.
Oct. 26, 2016 01:00 PM EDT Reads: 5,007
@ThingsExpo has been named the Top 5 Most Influential Internet of Things Brand by Onalytica in the ‘The Internet of Things Landscape 2015: Top 100 Individuals and Brands.' Onalytica analyzed Twitter conversations around the #IoT debate to uncover the most influential brands and individuals driving the conversation. Onalytica captured data from 56,224 users. The PageRank based methodology they use to extract influencers on a particular topic (tweets mentioning #InternetofThings or #IoT in this ...
Oct. 26, 2016 12:45 PM EDT Reads: 8,556
In his general session at 19th Cloud Expo, Manish Dixit, VP of Product and Engineering at Dice, will discuss how Dice leverages data insights and tools to help both tech professionals and recruiters better understand how skills relate to each other and which skills are in high demand using interactive visualizations and salary indicator tools to maximize earning potential. Manish Dixit is VP of Product and Engineering at Dice. As the leader of the Product, Engineering and Data Sciences team a...
Oct. 26, 2016 12:45 PM EDT Reads: 602
Virgil consists of an open-source encryption library, which implements Cryptographic Message Syntax (CMS) and Elliptic Curve Integrated Encryption Scheme (ECIES) (including RSA schema), a Key Management API, and a cloud-based Key Management Service (Virgil Keys). The Virgil Keys Service consists of a public key service and a private key escrow service.
Oct. 26, 2016 12:45 PM EDT Reads: 1,162
OnProcess Technology has announced it will be a featured speaker at @ThingsExpo, taking place November 1 - 3, 2016, in Santa Clara, California. Dan Gettens, OnProcess’ Chief Analytics Officer, will discuss how Internet of Things (IoT) data can be leveraged to predict product failures, improve uptime and slash costly inventory stock. @ThingsExpo is an annual gathering of IoT and cloud developers, practitioners and thought-leaders who exchange ideas and insights on topics ranging from Big Data in...
Oct. 26, 2016 12:45 PM EDT Reads: 410
Data is the fuel that drives the machine learning algorithmic engines and ultimately provides the business value. In his session at Cloud Expo, Ed Featherston, a director and senior enterprise architect at Collaborative Consulting, will discuss the key considerations around quality, volume, timeliness, and pedigree that must be dealt with in order to properly fuel that engine.
Oct. 26, 2016 12:30 PM EDT Reads: 3,954
In an era of historic innovation fueled by unprecedented access to data and technology, the low cost and risk of entering new markets has leveled the playing field for business. Today, any ambitious innovator can easily introduce a new application or product that can reinvent business models and transform the client experience. In their Day 2 Keynote at 19th Cloud Expo, Mercer Rowe, IBM Vice President of Strategic Alliances, and Raejeanne Skillern, Intel Vice President of Data Center Group and ...
Oct. 26, 2016 12:15 PM EDT Reads: 1,603
There is growing need for data-driven applications and the need for digital platforms to build these apps. In his session at 19th Cloud Expo, Muddu Sudhakar, VP and GM of Security & IoT at Splunk, will cover different PaaS solutions and Big Data platforms that are available to build applications. In addition, AI and machine learning are creating new requirements that developers need in the building of next-gen apps. The next-generation digital platforms have some of the past platform needs a...
Oct. 26, 2016 11:45 AM EDT Reads: 2,348
I'm a lonely sensor. I spend all day telling the world how I'm feeling, but none of the other sensors seem to care. I want to be connected. I want to build relationships with other sensors to be more useful for my human. I want my human to understand that when my friends next door are too hot for a while, I'll soon be flaming. And when all my friends go outside without me, I may be left behind. Don't just log my data; use the relationship graph. In his session at @ThingsExpo, Ryan Boyd, Engi...
Oct. 26, 2016 11:45 AM EDT Reads: 1,894
Successful digital transformation requires new organizational competencies and capabilities. Research tells us that the biggest impediment to successful transformation is human; consequently, the biggest enabler is a properly skilled and empowered workforce. In the digital age, new individual and collective competencies are required. In his session at 19th Cloud Expo, Bob Newhouse, CEO and founder of Agilitiv, will draw together recent research and lessons learned from emerging and established ...
Oct. 26, 2016 11:45 AM EDT Reads: 1,526
Smart Cities are here to stay, but for their promise to be delivered, the data they produce must not be put in new siloes. In his session at @ThingsExpo, Mathias Herberts, Co-founder and CTO of Cityzen Data, will deep dive into best practices that will ensure a successful smart city journey.
Oct. 26, 2016 11:00 AM EDT Reads: 3,186
More and more brands have jumped on the IoT bandwagon. We have an excess of wearables – activity trackers, smartwatches, smart glasses and sneakers, and more that track seemingly endless datapoints. However, most consumers have no idea what “IoT” means. Creating more wearables that track data shouldn't be the aim of brands; delivering meaningful, tangible relevance to their users should be. We're in a period in which the IoT pendulum is still swinging. Initially, it swung toward "smart for smar...
Oct. 26, 2016 10:30 AM EDT Reads: 1,161
Two weeks ago (November 3-5), I attended the Cloud Expo Silicon Valley as a speaker, where I presented on the security and privacy due diligence requirements for cloud solutions. Cloud security is a topical issue for every CIO, CISO, and technology buyer. Decision-makers are always looking for insights on how to mitigate the security risks of implementing and using cloud solutions. Based on the presentation topics covered at the conference, as well as the general discussions heard between sessi...
Oct. 26, 2016 10:15 AM EDT Reads: 5,189
19th Cloud Expo, taking place November 1-3, 2016, 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 enterpri...
Oct. 26, 2016 10:15 AM EDT Reads: 4,972
The Internet of Things can drive efficiency for airlines and airports. In their session at @ThingsExpo, Shyam Varan Nath, Principal Architect with GE, and Sudip Majumder, senior director of development at Oracle, will discuss the technical details of the connected airline baggage and related social media solutions. These IoT applications will enhance travelers' journey experience and drive efficiency for the airlines and the airports. The session will include a working demo and a technical d...
Oct. 26, 2016 10:00 AM EDT Reads: 2,635
The Internet of Things (IoT), in all its myriad manifestations, has great potential. Much of that potential comes from the evolving data management and analytic (DMA) technologies and processes that allow us to gain insight from all of the IoT data that can be generated and gathered. This potential may never be met as those data sets are tied to specific industry verticals and single markets, with no clear way to use IoT data and sensor analytics to fulfill the hype being given the IoT today.
Oct. 26, 2016 07:30 AM EDT Reads: 2,825
@ThingsExpo has been named the Top 5 Most Influential M2M Brand by Onalytica in the ‘Machine to Machine: Top 100 Influencers and Brands.' Onalytica analyzed the online debate on M2M by looking at over 85,000 tweets to provide the most influential individuals and brands that drive the discussion. According to Onalytica the "analysis showed a very engaged community with a lot of interactive tweets. The M2M discussion seems to be more fragmented and driven by some of the major brands present in the...
Oct. 26, 2016 07:30 AM EDT Reads: 11,544