Presenter: Chen Sun
Chen sun introduces how networks have changed from the usage of middleboxes to the use of service chains. Sun et al, argues that sequential service chaining in network function introduce latency and overhead in NFV. He proposes the use of virtualization techniques that exploits low cost, flexibility, and scalability. There have been recent networks that reduce NFV latency such as ClickNP NetBricks and OpenBox via a horizontal sequence.
Sun et al implements an NFP framework that enables network function parallelism to improve NFV performance. The framework consists of three main components: policy specification scheme, NFP orchestrator and NFP infrastructure.
The Policy Specification Scheme applies an intuitive graph description. This involves a step-by-step process to order the packets, set the priority of the packets and position the packets. The Orchestrator uses a three-stack workflow in handling the packets. This involves NF Dependency Identification (Add/drop, read, write, drop a packet), Resource Overhead Optimization and Service Graph Construction. The NFP Infrastructure aspires to overcome four main challenges: Packet Copying, Packet Delivery, Packet Merging and Packet Dropping. For example, to tackle packet delivery, a distributed packet delivery process is deployed to deliver more packets (example four packets) at the same time as opposed to central packet delivery system. This results in a higher number of packets being delivered.
The authors have implemented a prototype of the NFP framework called OpenNetVM, which showcases the benefits and limitations of NF parallelism. The NFP framework results in a slightly higher latency rate than that of the service chain but has an improved rate of distributed packet delivery.
There is a 53.5% of NF pairs that can run in parallel and 41.5% of NF pairs can be parallelized without causing extra resource overhead. Therefore, from these calculations, we can extract the opportunities posed by the NFP framework to increase the performance of NFV.
Q: In NF Parallelism with branching, when one packet is dropped by one branch, what are the actions of the other branch?
A: The NF Analysis process is used to detect which packet has been dropped. From there, the framework considers what actions to take and solve the problem. This is done via the identification algorithm.
Q: With branching in NF Parallelism, how does the system handle packets with branches operating at different speeds?
A: Through Packet Tagging, we identify, copy, merge and determine if we should drop the packets.
In the future, we will add branching policies and implement optimization.
Q: How do NF read/write information to packets with the use of 3rd parties?
A: The programming interface can be used to identify the actions and detect network functions.
- · Bath processing (e.g NetVM [NSDI’14], Intel DPDK)
- · Parallel processing pf NF building blocks (e.g CLickNP [SIGCOMM’16])
- · Parallelism between match-action tables (e.g P4, RMT [SIGCOMM’13])
- · Module composition in parallel in SDN (e.g Pyretic [NSDI’13])
Thanks for sharing. Air Ambulance and air medical service will be provided from Bangalore,India to across the world services, air ambulance in Bangalore is used to respond to medical emergencies by emergency medical services.charter Flights Aviation is providing all kind of medical emergency assitance and air ambulances are ICU equiped also contains Aero Medical Docters and Nurses,Suction Machine,Emergency Medicine,Ventilator,Defibrillator etcReplyDelete
ادوات صحيه الكويتReplyDelete
شركة غسيل سجاد الكويت غسيل سجاد الكويت
فني كهربائي منازل الكويت كهربائي منازل في الكويت
شركة تنظيف في الكويت شركة الكويت سيرفيس للتنظيف
This is my first time i visit here. I found so many entertaining stuff in your blog, especially its discussion. From the tons of comments on your articles, I guess I am not the only one having all the leisure here! Keep up the good work. I have been meaning to write something like this on my website and you have given me an idea. Best essay writing servicesReplyDelete
This is such a great resource that you are providing and you give it away for free. I love seeing blog that understand the value of providing a quality resource for free. pay to write paperReplyDelete
A couple of days ago I had a disagreement with my colleague who also is a writer and ultimately he and I had to complement our ways as neither folks was willing to listen to one another but yes we both knew that we are correct at our points. apnews.comReplyDelete
Awesome and interesting article. Great things you've always shared with us. Thanks. Just continue composing this kind of post. professional writing servicesReplyDelete
Remember an essay is an argument: the task in an article is not to create a story or even to recount a plot. The teacher knows all of this information. In an article your child's job is to present a compelling argument-using specific evidence-for the purpose they are attempting to make. great post to readReplyDelete
I found Hubwit as a transparent s ite, a social hub which is a conglomerate of Buyers and Sellers who are ready to offer online digital consultancy at decent cost. cheap research papers onlineReplyDelete
In Network Function Virtualization (NFV), software-based sequential service chains may introduce significant performance overhead. Online Essays HelpReplyDelete
Remember that you are still on a free host and if you have too much visitors at a time you will consume all your bandwidth in the firs 20 days or even faster. After that your website won't work anymore and you get bad reputation. readReplyDelete
Thank you for helping people get the information they need. Great stuff as usual. Keep up the great work!!! more infoReplyDelete
I would like to say that this blog really convinced me to do it! Thanks, very good post. read moreReplyDelete