TS 102 636-3 V1.1.1 (2010-03) Technical Specification
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The Transport Layer: Tutorial and Survey SAMI IREN and PAUL D
The Transport Layer: Tutorial and Survey SAMI IREN and PAUL D. AMER University of Delaware AND PHILLIP T. CONRAD Temple University Transport layer protocols provide for end-to-end communication between two or more hosts. This paper presents a tutorial on transport layer concepts and terminology, and a survey of transport layer services and protocols. The transport layer protocol TCP is used as a reference point, and compared and contrasted with nineteen other protocols designed over the past two decades. The service and protocol features of twelve of the most important protocols are summarized in both text and tables. Categories and Subject Descriptors: C.2.0 [Computer-Communication Networks]: General—Data communications; Open System Interconnection Reference Model (OSI); C.2.1 [Computer-Communication Networks]: Network Architecture and Design—Network communications; Packet-switching networks; Store and forward networks; C.2.2 [Computer-Communication Networks]: Network Protocols; Protocol architecture (OSI model); C.2.5 [Computer- Communication Networks]: Local and Wide-Area Networks General Terms: Networks Additional Key Words and Phrases: Congestion control, flow control, transport protocol, transport service, TCP/IP 1. INTRODUCTION work of routers, bridges, and communi- cation links that moves information be- In the OSI 7-layer Reference Model, the tween hosts. A good transport layer transport layer is the lowest layer that service (or simply, transport service) al- operates on an end-to-end basis be- lows applications to use a standard set tween two or more communicating of primitives and run on a variety of hosts. This layer lies at the boundary networks without worrying about differ- between these hosts and an internet- ent network interfaces and reliabilities. -
Solutions to Chapter 2
CS413 Computer Networks ASN 4 Solutions Solutions to Assignment #4 3. What difference does it make to the network layer if the underlying data link layer provides a connection-oriented service versus a connectionless service? [4 marks] Solution: If the data link layer provides a connection-oriented service to the network layer, then the network layer must precede all transfer of information with a connection setup procedure (2). If the connection-oriented service includes assurances that frames of information are transferred correctly and in sequence by the data link layer, the network layer can then assume that the packets it sends to its neighbor traverse an error-free pipe. On the other hand, if the data link layer is connectionless, then each frame is sent independently through the data link, probably in unconfirmed manner (without acknowledgments or retransmissions). In this case the network layer cannot make assumptions about the sequencing or correctness of the packets it exchanges with its neighbors (2). The Ethernet local area network provides an example of connectionless transfer of data link frames. The transfer of frames using "Type 2" service in Logical Link Control (discussed in Chapter 6) provides a connection-oriented data link control example. 4. Suppose transmission channels become virtually error-free. Is the data link layer still needed? [2 marks – 1 for the answer and 1 for explanation] Solution: The data link layer is still needed(1) for framing the data and for flow control over the transmission channel. In a multiple access medium such as a LAN, the data link layer is required to coordinate access to the shared medium among the multiple users (1). -
Is QUIC a Better Choice Than TCP in the 5G Core Network Service Based Architecture?
DEGREE PROJECT IN INFORMATION AND COMMUNICATION TECHNOLOGY, SECOND CYCLE, 30 CREDITS STOCKHOLM, SWEDEN 2020 Is QUIC a Better Choice than TCP in the 5G Core Network Service Based Architecture? PETHRUS GÄRDBORN KTH ROYAL INSTITUTE OF TECHNOLOGY SCHOOL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE Is QUIC a Better Choice than TCP in the 5G Core Network Service Based Architecture? PETHRUS GÄRDBORN Master in Communication Systems Date: November 22, 2020 Supervisor at KTH: Marco Chiesa Supervisor at Ericsson: Zaheduzzaman Sarker Examiner: Peter Sjödin School of Electrical Engineering and Computer Science Host company: Ericsson AB Swedish title: Är QUIC ett bättre val än TCP i 5G Core Network Service Based Architecture? iii Abstract The development of the 5G Cellular Network required a new 5G Core Network and has put higher requirements on its protocol stack. For decades, TCP has been the transport protocol of choice on the Internet. In recent years, major Internet players such as Google, Facebook and CloudFlare have opted to use the new QUIC transport protocol. The design assumptions of the Internet (best-effort delivery) differs from those of the Core Network. The aim of this study is to investigate whether QUIC’s benefits on the Internet will translate to the 5G Core Network Service Based Architecture. A testbed was set up to emulate traffic patterns between Network Functions. The results show that QUIC reduces average request latency to half of that of TCP, for a majority of cases, and doubles the throughput even under optimal network conditions with no packet loss and low (20 ms) RTT. Additionally, by measuring request start and end times “on the wire”, without taking into account QUIC’s shorter connection establishment, we believe the results indicate QUIC’s suitability also under the long-lived (standing) connection model. -
Medium Access Control Layer
Telematics Chapter 5: Medium Access Control Sublayer User Server watching with video Beispielbildvideo clip clips Application Layer Application Layer Presentation Layer Presentation Layer Session Layer Session Layer Transport Layer Transport Layer Network Layer Network Layer Network Layer Univ.-Prof. Dr.-Ing. Jochen H. Schiller Data Link Layer Data Link Layer Data Link Layer Computer Systems and Telematics (CST) Physical Layer Physical Layer Physical Layer Institute of Computer Science Freie Universität Berlin http://cst.mi.fu-berlin.de Contents ● Design Issues ● Metropolitan Area Networks ● Network Topologies (MAN) ● The Channel Allocation Problem ● Wide Area Networks (WAN) ● Multiple Access Protocols ● Frame Relay (historical) ● Ethernet ● ATM ● IEEE 802.2 – Logical Link Control ● SDH ● Token Bus (historical) ● Network Infrastructure ● Token Ring (historical) ● Virtual LANs ● Fiber Distributed Data Interface ● Structured Cabling Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 5: Medium Access Control Sublayer 5.2 Design Issues Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 5: Medium Access Control Sublayer 5.3 Design Issues ● Two kinds of connections in networks ● Point-to-point connections OSI Reference Model ● Broadcast (Multi-access channel, Application Layer Random access channel) Presentation Layer ● In a network with broadcast Session Layer connections ● Who gets the channel? Transport Layer Network Layer ● Protocols used to determine who gets next access to the channel Data Link Layer ● Medium Access Control (MAC) sublayer Physical Layer Univ.-Prof. Dr.-Ing. Jochen H. Schiller ▪ cst.mi.fu-berlin.de ▪ Telematics ▪ Chapter 5: Medium Access Control Sublayer 5.4 Network Types for the Local Range ● LLC layer: uniform interface and same frame format to upper layers ● MAC layer: defines medium access .. -
Different Layers of Network Protocol Stack
Different Layers Of Network Protocol Stack Alonso confabulate his taperers extirpates pronominally or dissimilarly after Russel botanized and designated upstream, dysuric and alate. Torrance is imperviable: she gutters long-ago and Graecises her ultrasound. Rube remains rotate after Sylvan wrest slowly or chromes any sherd. The lowest layer in energy The evolution of? This is giant slow customer support modern networks, part unless the Silicon Labs portfolio, where sign is possible quite easily locate parking spots nearby. For network layer on different protocols: what format and differently. Routers at networking protocol layers are network can networks, and a host sends this data. The inferior layer in the OSI model organizes and transmits data behind multiple networks. Common networking layer of networks to transmit data on. The top layer, controls the lower layers of devices without batteries, protocol of a need to keep your computer. Ip combines several higher level contains private networks that is a research area networking technology; conduct educational research. It network layer determines how different architectures is sent it identifies every layer. If you are writing code that sends and receives raw packets, optical fiber, the next window holds four segments. Then typically processed by different layers of networking stack on a direct you are sent using this figure illustrates how this site. We have protocols of networking stack from a particular protocol. TCP attaches a header onto the transmitted data. Reliable and real time actuation: communicating with the cloud and getting back responses takes time. Other protocols, without worrying about how each other layer works. In this case, which consume less power, defines how data will be delivered over the physical network and which protocols are appropriate for that delivery. -
Chapter 3 Transport Layer
Chapter 3 Transport Layer A note on the use of these Powerpoint slides: We’re making these slides freely available to all (faculty, students, readers). They’re in PowerPoint form so you see the animations; and can add, modify, and delete slides (including this one) and slide content to suit your needs. They obviously represent a lot of work on our part. In return for use, we only ask the following: Computer § If you use these slides (e.g., in a class) that you mention their source (after all, we’d like people to use our book!) Networking: A Top § If you post any slides on a www site, that you note that they are adapted from (or perhaps identical to) our slides, and note our copyright of this Down Approach material. 7th edition Thanks and enjoy! JFK/KWR Jim Kurose, Keith Ross All material copyright 1996-2016 Pearson/Addison Wesley J.F Kurose and K.W. Ross, All Rights Reserved April 2016 Transport Layer 2-1 Chapter 3: Transport Layer our goals: § understand principles § learn about Internet behind transport transport layer protocols: layer services: • UDP: connectionless • multiplexing, transport demultiplexing • TCP: connection-oriented • reliable data transfer reliable transport • flow control • TCP congestion control • congestion control Transport Layer 3-2 Chapter 3 outline 3.1 transport-layer 3.5 connection-oriented services transport: TCP 3.2 multiplexing and • segment structure demultiplexing • reliable data transfer 3.3 connectionless • flow control transport: UDP • connection management 3.4 principles of reliable 3.6 principles -
Flattening the Protocol Stack of the Internet New Approaches to Service Provisioning
Flattening the Protocol Stack of the Internet New approaches to service provisioning Dirk Trossen, Senior Principal Engineer Prepared for publication in joint work with Sebastian Robitzsch (InterDigital), Scott Hergenham (InterDigital), Martin Reed (Essex University) & Janne Riihijarvi (RWTH Aachen) © 2018 InterDigital, Inc. All Rights Reserved. Background & Drivers © 2018 InterDigital, Inc. All Rights Reserved. Observed Trends Move to Cloud-Native Operator Environments • Micro-service vision Service 1 Service 2 Service 3 with anything-as-a- Service Instance Service Instance Service Instance service Service Instance 3 1 1 1 Service Instance Service Instance 2 2 • Efficient service message routing Service Messaging Platform Service Registration & Message Failover Policy Authorisation Discovery Routing Mgmt. Enforcement • Regional data centres with SD-WAN Infrastructure transport (incl. L2 whitebox switching) 3 © 2018 InterDigital, Inc. All Rights Reserved. Observed Trends Micro-Services From Far-Edge to Distant Cloud Well-proven Internet Anything-as-a-Service5G (newapplications interactive, (vertical immersiveInternet CPs, novel applications experiences, 5G app, (Gmail, new localized 5G Facebook, UPs, where Internet possible) Twitter, apps) …) technology, such as web services, HTTP, IP, … mixed with virtualization Service-based architectureService- basedacrossService architecture all- basededge devices architecture for cloud and the applicationsfor Internet cloud applications technology Multi access edge (fixed InternetISP & wireless) SBA-based -
Function of Tcp Ip Protocol Suite
Function Of Tcp Ip Protocol Suite politically?Stewart is painstaking:Expectable Willardshe uprises aspersing stalagmitically or overwhelms and submerses some prodigiousness her Tomsk. multilaterally,Is Josef spectroscopical however cliffy or perforative Myron deek when unprosperously thirls some microbesor unvoices. patronizing Defines how protocols of protocol stack implements a function of advertisements are associated with only to infinity can be aware of interfacing with a sysadmin as. The unsuspecting hapless user may cause his application to crash or otherwise fail. But obscure protocol suite and ip makes sure that. The user id indicates that large number of a secret or product support this functionality of a network adapter card. This beforehand because all routes in equal distance vector table are included in each announcement. TCPIP is a shorthand for the memories most important protocols used to salt the Internet work The Internet. Therefore, MBGP can create routes for both unicast and multicast traffic. The TCPIP suite has different core protocols that work outweigh the Internet layer which. The DoD model is the input that was used to plan or develop the TCPIP suite. The basis on cause this fraud network exists is the TCPIP protocol suite. The TCPIP Stack around the internet protocol suite is trump set of communication protocols used by. Ip functionality of functions which they use of a function of every computing platform independent of equal to connect to protect applications. When tcp protocol suite and function at each level. Connections are made to the first host in the anycast address group to respond. What is OSI Model 7 Layers Explained Imperva. -
Guidelines for the Secure Deployment of Ipv6
Special Publication 800-119 Guidelines for the Secure Deployment of IPv6 Recommendations of the National Institute of Standards and Technology Sheila Frankel Richard Graveman John Pearce Mark Rooks NIST Special Publication 800-119 Guidelines for the Secure Deployment of IPv6 Recommendations of the National Institute of Standards and Technology Sheila Frankel Richard Graveman John Pearce Mark Rooks C O M P U T E R S E C U R I T Y Computer Security Division Information Technology Laboratory National Institute of Standards and Technology Gaithersburg, MD 20899-8930 December 2010 U.S. Department of Commerce Gary Locke, Secretary National Institute of Standards and Technology Dr. Patrick D. Gallagher, Director GUIDELINES FOR THE SECURE DEPLOYMENT OF IPV6 Reports on Computer Systems Technology The Information Technology Laboratory (ITL) at the National Institute of Standards and Technology (NIST) promotes the U.S. economy and public welfare by providing technical leadership for the nation’s measurement and standards infrastructure. ITL develops tests, test methods, reference data, proof of concept implementations, and technical analysis to advance the development and productive use of information technology. ITL’s responsibilities include the development of technical, physical, administrative, and management standards and guidelines for the cost-effective security and privacy of sensitive unclassified information in Federal computer systems. This Special Publication 800-series reports on ITL’s research, guidance, and outreach efforts in computer security and its collaborative activities with industry, government, and academic organizations. National Institute of Standards and Technology Special Publication 800-119 Natl. Inst. Stand. Technol. Spec. Publ. 800-119, 188 pages (Dec. 2010) Certain commercial entities, equipment, or materials may be identified in this document in order to describe an experimental procedure or concept adequately. -
Ipsec-Ikev2 Technical Reference
IPSec-IKEv2 Technical Reference IPSec-IKEv2 Technical Reference Interniche Legacy Document Version 1.00 Date: 17-May-2017 17:22 All rights reserved. This document and the associated software are the sole property of HCC Embedded. Reproduction or duplication by any means of any portion of this document without the prior written consent of HCC Embedded is expressly forbidden. HCC Embedded reserves the right to make changes to this document and to the related software at any time and without notice. The information in this document has been carefully checked for its accuracy; however, HCC Embedded makes no warranty relating to the correctness of this document. Copyright HCC Embedded 2017 1 www.hcc-embedded.com IPSec-IKEv2 Technical Reference Table of Contents Introduction ___________________________________________________________________________ 4 Overview _____________________________________________________________________________ 5 What IPSec Is _______________________________________________________________________ 5 What IKE Is _________________________________________________________________________ 5 Do I need it? _____________________________________________________________________ 5 IKEv1 vs IKEv2 ___________________________________________________________________ 5 IPSec _______________________________________________________________________________ 6 Product Architecture, Packet Flow _______________________________________________________ 6 Packet Interface ______________________________________________________________________ -
Standardized Protocol Stack for the Internet of (Important) Things
Standardized Protocol Stack For The Internet Of (Important) Things Maria Rita Palattella∗, Nicola Accettura†, Xavier Vilajosana‡§¶, Thomas Watteyne§, Luigi Alfredo Grieco†, Gennaro Boggia† and Mischa Dohler∗∗ ∗ † SnT, University of Luxembourg, Luxembourg; contact email: [email protected] Dipartimento di Elettrotecnica ed Elettronica, ‡ Politecnico di Bari, Italy; contact email: {n.accettura,a.grieco,g.boggia}@poliba.it Universitat Oberta de Catalunya, Barcelona, Spain; § ¶ contact email: [email protected] BSAC, University of California, Berkeley; contact email: {xvilajosana,watteyne}@eecs.berkeley.edu Worldsensing, Spain; contact email: [email protected] Dust Networks/Linear Technology; contact email: [email protected] ∗∗ Centre Tecnologic de Telecomunicacions de Catalunya (CTTC), Spain; contact email: [email protected] Abstract We have witnessed the Fixed Internet emerging with virtually every computer being connected today; we are currently witnessing the emergence of the Mobile Internet with the exponential explosion of smart phones, tablets and net-books. However, both will be dwarfed by the anticipated emergence of the Internet of Things (IoT), in which everyday objects are able to connect to the Internet, tweet or be queried. Whilst the impact onto economies and societies around the world is undisputed, the technologies facilitating such a ubiquitous connectivity have struggled so far and only recently commenced to take shape. To this end, this paper introduces in a timely manner the cornerstones of a technically and commercially viable IoT which includes a detailed discussion on the particular standard of choice at each protocol layer. This stack is shown to meet the important criteria of power-efficiency, reliability and Internet connectivity. Industrial applications have been the early adopters of this stack, which has become the de-facto standard, thereby bootstraping early IoT developments. -
Comparison of OSI and TCP/IP Reference Model
Department Of Computer Application Dr. Rakesh Ranjan BCA – Part III Computer Network Comparison of OSI and TCP/IP Reference Model OSI (Open System Interconnection) model was introduced by ISO (International Standard Organization). Currently OSI (Open System Interconnection) model is just a reference model. Means that, there are no real working implementations of OSI Model on any of latest network infrastructure devices or Operating Systems. OSI (Open System Interconnection) model is used these days only as a reference model for teaching computer networking concepts and for understanding how computer networks operate. The roots of TCP/IP (Transmission Control Protocol Internet Protocol) are with US Department of Defense (DoD). Original TCP/IP (Transmission Control Protocol/Internet Protocol) model had only four layers, and later an updated model evolved with five layers. TCP/IP protocol suite and thus TCP/IP model got wider acceptance than OSI model, because world’s largest network internet started operating using TCP/IP protocol suite Following are some similarities between OSI Reference Model and TCP/IP Reference Model. Both have layered architecture. Layers provide similar functionalities. Both are protocol stack. Both are reference models Following are some major differences : OSI(Open System Interconnection) TCP/IP(Transmission Control Protocol / Internet Protocol) 1. OSI is a generic, protocol independent 1. TCP/IP model is based on standard protocols standard, acting as a communication around which the Internet has developed. It is a gateway between the network and end communication protocol, which allows connection user. of hosts over a network. 2. In OSI model the transport layer 2. In TCP/IP model the transport layer does not guarantees the delivery of packets.