In the first blog in this series we talked about programmable fabrics and their use causes. In this blog we’ll look at what a programmable fabric actually looks like.The following diagram shows the high-level architecture of a programmable fabric:The programmable fabric can be broken down into two main layers, the control plane and the data plane.Control Plane LayerThe control plane layer is responsible for configuring and managing the data plane and is normally more centrally located, i.e., one per PoP or region.The control plane is normally divided into three separate domains – Fabric, Telemetry & Configuration and Management – to allow them to scale independently. However, they could be implemented in one software controller, for example in a small-scale implementation.1. Fabric ControllerThe Fabric Controller controls the loading and programming of the data plane pipeline using the P4 Runtime interface to communicate with the data plane’s programmable forwarding engine as shown in the diagram below.There will be a number of controller applications or “network functions” that talk to the fabric controller to control various aspects of the programmable fabric.The Fabric Management applications manage the underlying network fabric setup and configuration. It can also be thought of as a number of virtualized switch and router network functions that provide the underlying network fabric using the programmable fabric.The Fabric Management applications rely on user plane functionality being implemented in the P4 pipeline in the PFE.The NF control plane uses a CUPS (Control User Plane Separation) methodology to implement the control plane portion of a Network Function while the user plane functions are pushed down into the “data plane node” as described in this document.2. Telemetry ControllerThe Telemetry Controller allows applications (i.e. Fault Management) to collect telemetry on the network elements in the programmable fabric using the Programmable Fabric’s gNMI streaming interface. It is expected that other applications will use things like machine learning to provide more intelligent decisions and provide control loop feedback into the Fabric Controller applications to provide pre-emptive service reconfiguration and repair as we move towards autonomous networks.3. Configuration and Management ControllerThe Configuration and Management Controller will provide applications with common north bound interfaces and models for the configuration and management of the programmable fabric.The OpenConfig group provides a set of network data models that allow network functions to be managed using a common set of tools and protocols. The gNMI and gNOI interfaces use the OpenConfig models to allow efficient access to configure and manage the network functions in the Programmable Fabric.Data Plane LayerThe data plane does the bulk of the network traffic forwarding only sending exception or control packets up to the control plane for processing (i.e. DHCP for a new IPoE session in a BNG-c). While the data plane might normally be thought of as a standalone network switch in the network it could also be a SmartNIC in a compute server that allows the programmable fabric to be extended up into the server (i.e. using P4 to define a pipeline in an FPGA SmartNIC).The data plane is normally made up of several components:Data Plane Node (DPN):is used to describe the hardware that houses the data plane forwarding function (i.e. all the components below). This could be a stand alone network switch with a PFE like Intel/Barefoot’s Tofino chip or a compute server with a P4 based SmartNIC like Intel’s PAC N3000.Data Plane Agent (DP-Agent):provides the standardised north bound data plane interfaces (i.e. P4 Runtime, gNMI and gNOI) that allow the control plane network functions to communicate with the data plane. An example implementation of the DP-Agent is the ONF’s Stratum project.Network Function user plane (NF-u):the user plane portions of network functions can be defined in the programmable pipeline (i.e. using P4 for example) and then loaded into the PFE to process packets. These functions are programmed by their control plane counters parts (i.e. BNG-c, UPF-c, Fabric Manager-c) in order to handle the bulk of the traffic in the PFE without needing to go up to the control plane for processing.Programmable Forwarding Engine (PFE):the actual hardware that does the packet forwarding. Some examples of a PFE could be the P4 based switch chipset like Intel/Barefoot’s Tofino chipset, or another could be an FPGA based SmartNIC using P4 to define the packet forwarding pipeline.Dell Technologies is committed to driving disaggregation and innovation through open architectures and the competitiveness this brings to our customer’s networks. The high-level architecture described in this blog is in line with the Open Networking Forum’s Stratum and NG-SDN projects and provides open building blocks that allow telecommunication providers to build open, scalable and cost effective edge solutions.
Sign up for our COVID-19 newsletter to stay up-to-date on the latest coronavirus news throughout New York 11. Schools too goodNobody likes a know it all. And with LI schools ranking among the best in the nation, there’s bus loads of smart-aleck-y kids running around shoving their science fair trophies and writing scholarships in your face. Thanks a lot, future of America.10. Beaches too niceA woman carries her surfboard from the beach in the Hamptons.There’s nothing worse than a nice relaxing day at the shore. Sure, a beach nap and dip in the ocean is great, but eventually the sun goes down, everyone has to leave, and the painful existence of work and/or school resumes.9. Property too good an investmentDon’t you just hate making the biggest investment of your life by purchasing a home to a raise a family and the value of that property constantly rising year after year because demand for housing is so high? Equity is exhausting.8. Nightlife too fun Greenport’s downtown has been lively since the LIRR first stopped there in the 19th century. (photo credit: Joe Shlabotnik/Flickr)Uhg, between having to decide between an Islanders game, a concert at one of numerous local live music venues, or a night out at one of the many downtowns on LI, it’s enough to make you want to just stay home and do nothing instead.7. Too many celebrities “Piano Man” Billy Joel bids Nassau Veterans Memorial Coliseum farewell on Aug. 4, 2015.You know what really grinds my gears? Bumping into some big-name movie star, TV host, supermodel, or music icon while out and about trying to live my life. Go back to Hollywood, famous people!6. Scenery too beautiful A dramatic sunset at a Sayville marina. (Shutterstock)Did you know there’s a place on Fire Island where people gather to watch the sunset and they’re so inspired by the colorful celestial show reflecting off the Great South Bay that they all applaud when it’s over? Makes me sick.5. NYC too accessible Times Square on a rainy night in New York CityWho wants to be about an hour train ride from the greatest city on Earth and all of the excitement to be had there? Not me.4. Food too deliciousDon’t get me started on trying to decide what to eat. Yes, everyone knows about our pizza and bagels. But what about all the other cuisine, from five-star fine dining hot spots to acclaimed eateries run by celebrity chefs? Why not just microwave some Ramen?3. Too many destinationsVisitors at Montauk Point.You mean it’s not bad enough that we have to live here, but we also have to vacation here? And amazing getaways like the Twin Forks, Shelter Island, and Fire Island are a short drive or boat ride away? Gross.2. Too many beveragesBlue Point Brewery debuted Colonial Ale, a beer recipe created by President George Washington, at the 2016 Hofstra Debates (Timothy Bolger/Long Island Press)Then there’s all the delicious craft beer and wine that local brewers and wineries are pouring. I’ll stick with my box wine and cheap water-down, mass-produced beer, thank you very much.1. Too much historyThe William Floyd Estate in Mastic was home to one of the signers of the Declaration of Independence. (Photo by Xiomaro). .On top of everything else, this wretched sandbar also played a key role in pivotal moment’s of our nation’s history, from the Revolutionary War to the Moon landing? Get me outta here!
by Tracy McCue, Sumner Newscow â€” A couple of Wellington school board members expressed irritation that the USD 353 school district construction project for security and other improvements is not progressing as quickly as it should.Both board members Carol Hadorn and Pat Zeka expressed concerns near the tail end of Thursdayâ€™s regular meeting that deadlines are not being met by the construction company.“In my limited experience with them, they seem to have missed every deadline,” Zeka said.Wellington Superintendent Rick Weiss said he hasnâ€™t been happy with the progress so far either.â€œIâ€™ll say I have personally been involved with three school construction projects during my time as a school administrator and this is by far the most interesting one Iâ€™ve been associated with,â€ Weiss said. â€œI keep getting reassurances from them that so and so will get done and then itâ€™s 50/50 if it really gets done.â€The school district is undergoing several transformations including building of tornado shelters in certain buildings, making more secure entryways throughout the district, putting in heating and air conditioning units in a couple of elementaries, building an auxiliary middle school gymnasium and redoing the WMS parking lot.Walz, Harmon and Huffman is the general contractor for the project. The project was approved by voters in June of 2014.Weiss said in an earlier interview with Sumner Newscow that he is satisfied with the work that has been done so far. Itâ€™s just getting it completed that seems to be the issue. Wellington has already suffered one week delay to the start of school, due to buildings not being ready for student occupancy. Washington Elementary was the worst hit when it was discovered that the air conditioning/heating units needed to be moved from the ceiling to the floor and the duct work needed to be restructured (see story here).While that crisis is in the past, it still has not sit well with Weiss and some of the board members and makes them weary about the future. The heating/air conditioning work at Eisenhower Elementary is especially going slow where students and teachers are working around construction especially not having any ceiling tiles in a large section of the building as a new ac/heating system is instilled.As far as other projects are concerned, Weiss said he hopes to have tornado shelters in place at Roosevelt and Eisenhower before the tornado season completed, but is offering no guarantees.The auxiliary gym will be bid out this month, and its construction will begin in the not to distant future. In the totality scheme of things, the project is still going on the way it is supposed to, Weiss said. Still, Weiss said the day-to-day operations is what bothers him the most. He is still waiting on a construction schedule.â€œThey were supposed to get that to me on Wednesday,â€ Weiss said on Thursday of last week. â€œI havenâ€™t received anything yet.â€Board member Jackie Berryman asked if there is a way to get the architect to light a little fire underneath the tail of the contractors.Weiss said usually nothing seems to work unless they read about it in the press.â€œItâ€™s just going to be a long year,â€ Hadorn said. â€œI will say the students and teachers have been good soldiers throughout this whole process.â€Weiss said much of the work will be getting done during Thanksgiving and Christmas break. Hadorn responded that she has her doubts it will get done during that time.Weiss said the project is still under budget, and that there will be a pot of money at the end of the project that the construction company will not receive until all the work is completed.In other news, the board: â€¢tabled a request by the Kansas State High School Vocational Agriculture instructor Linda Chase to put together a clay target team;â€¢initiated the process of developing a long range strategic plan for USD 353;â€¢approved the site councils for 2015-16;â€¢held an executive session for non elected personnel.Follow us on Twitter. Close Forgot password? Please put in your email: Send me my password! Close message Login This blog post All blog posts Subscribe to this blog post’s comments through… RSS Feed Subscribe via email Subscribe Subscribe to this blog’s comments through… RSS Feed Subscribe via email Subscribe Follow the discussion Comments (12) Logging you in… Close Login to IntenseDebate Or create an account Username or Email: Password: Forgot login? Cancel Login Close WordPress.com Username or Email: Password: Lost your password? Cancel Login Dashboard | Edit profile | Logout Logged in as Admin Options Disable comments for this page Save Settings Sort by: Date Rating Last Activity Loading comments… You are about to flag this comment as being inappropriate. Please explain why you are flagging this comment in the text box below and submit your report. The blog admin will be notified. Thank you for your input. -1 Vote up Vote down CueballSumnernewscow 94p · 252 weeks ago In order to participate in the comment section, please read the comment policy here: http://www.sumnernewscow.com/sumner-newscow-comme…. We highly encourage you to sign your name, but will allow one surname, preferably a first or middle name, and a valid e-mail address. E-mails will not be published. Report Reply 0 replies · active 252 weeks ago +14 Vote up Vote down Becky A. · 252 weeks ago When the District receives the construction schedule, it would be appreciated if they would share it with the public. The citizens of Wellington are paying for this so it would only make sense that they are kept informed of the progress and timing of this project. Report Reply 0 replies · active 252 weeks ago +8 Vote up Vote down JustMe · 252 weeks ago A clay target team would be a huge thing. Being a rural community, that’s something a lot of kids could get involved in. Report Reply 0 replies · active 252 weeks ago +1 Vote up Vote down Larry · 252 weeks ago They will never let it happen if the district is a gun free zone. They would have to break their on rules. Report Reply 4 replies · active 252 weeks ago +6 Vote up Vote down brenda · 252 weeks ago Maybe they should set deadlines for each project and when they aren’t met, the company starts losing money from the original amount…that should kick em in high gear. Report Reply 0 replies · active 252 weeks ago +6 Vote up Vote down Charlie · 252 weeks ago Maybe the board should have researched this general contractor before hand. Having worked with commercial general contractors all my life, this is about the right speed for this one. Good luck. I hope there was a severe time penalty clause in the contract. Report Reply 0 replies · active 252 weeks ago +3 Vote up Vote down randy · 252 weeks ago I dont think the superintendent and other admin have been around to make sure things are getting done, their just saying that to keep us voters at bay. But thats wellington admin for you, dropping the ball once again. Report Reply 0 replies · active 252 weeks ago 0 Vote up Vote down Concerned Citizen · 164 weeks ago This issue has an easy solution. Firm completion and interim deadlines in the contract backed up with bonuses for early completion, monetary penalties for missing all deadlines, and no draws are paid at all until each agreed stage is met. You could include default clauses tied to timely completion Of stages too.Of course, the stages and interim deadlines must be reasonable and include retainage. This is easy to do and apparently lacking. This is a school construction administrator’s responsibility. The Board should find personnel with basic project management skills and get rid of those in those positions lacking them. This is not the fault of the architect or GC. This is obviously the fault of the school administrators and our chikdren deserve better. It is easy to try to blame the GC but this obviously a failure of our school administration. The School Board should hold administrators accountable.. Report Reply 0 replies · active 164 weeks ago Post a new comment Enter text right here! Comment as a Guest, or login: Login to IntenseDebate Login to WordPress.com Login to Twitter Go back Tweet this comment Connected as (Logout) Email (optional) Not displayed publicly. Name Email Website (optional) Displayed next to your comments. Not displayed publicly. If you have a website, link to it here. Posting anonymously. Tweet this comment Submit Comment Subscribe to None Replies All new comments Comments by IntenseDebate Enter text right here! 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