The document provides an overview of Chapter 3 from the textbook "Computer Networking: A Top Down Approach" by Jim Kurose and Keith Ross. It discusses the goals and outline of the chapter which covers transport layer services, multiplexing and demultiplexing, UDP, principles of reliable data transfer, TCP, and congestion control. Specifically, it describes transport layer services, multiplexing and demultiplexing of data between applications, UDP as a connectionless transport protocol, and outlines the topics to be covered related to reliable data transfer and TCP.
- The document is a chapter from a textbook on computer networking that discusses the network layer. It covers topics like virtual circuit networks, datagram networks, the operation of routers, IP, routing algorithms, and routing in the Internet.
- Routers examine header fields to forward packets to the appropriate output port based on the destination address and routing tables. Routing algorithms determine the path packets take between source and destination.
- Virtual circuit networks use call setup and connection state in routers to provide guaranteed services, while datagram networks like the Internet forward packets based only on destination addresses for simple operation.
With statistical multiplexing, the total bandwidth available can be utilized more fully since the links are not idle when only one host is transmitting. The statistical multiplexing allows aggregation of variable bit rate traffic streams.
The document discusses various aspects of transport layer protocols including services provided, primitives, addressing, connection establishment and release, flow control, multiplexing, crash recovery, TCP and UDP, and performance issues. Specific topics covered include Berkeley sockets, an example file server, TCP and UDP headers, congestion control, and fast TPDU processing techniques.
Transport layer protocols provide services like reliable data transfer and connection establishment between applications on networked devices. They address this need through protocols like TCP and UDP. TCP provides reliable, ordered data streams using mechanisms like three-way handshake, sequence numbers, acknowledgments, retransmissions, flow control via sliding windows, and connection termination handshaking. UDP provides simple datagram transmissions without reliability or flow control.
The document discusses various topics related to the transport layer in computer networks including TCP congestion control, retransmission timers, and connections; it also covers the network layer and topics like IP addressing, routing, forwarding, fragmentation, and the IPv4 datagram format. Key concepts are explained like congestion window, slow start, retransmission timeouts, and the AIMD congestion control algorithm used by TCP.
Module 3: Transport layer
Transport layer services, Multiplexing and demultiplexing, User datagram protocol, Transmission control protocol: connection, features, segment, Round-Trip Time estimation and timeout, Flow control, Congestion control, SCTP
The document summarizes key topics related to transport layer protocols:
- It describes the services provided by the transport layer, including addressing, connection establishment and release, flow control, and multiplexing.
- It provides details on common transport protocols like TCP and UDP, including their packet headers, connection management, congestion control, and performance issues at high speeds.
- It also presents an example transport protocol and uses finite state machines to model its operation and connection management.
- The document is a chapter from a textbook on computer networking that discusses the network layer. It covers topics like virtual circuit networks, datagram networks, the operation of routers, IP, routing algorithms, and routing in the Internet.
- Routers examine header fields to forward packets to the appropriate output port based on the destination address and routing tables. Routing algorithms determine the path packets take between source and destination.
- Virtual circuit networks use call setup and connection state in routers to provide guaranteed services, while datagram networks like the Internet forward packets based only on destination addresses for simple operation.
With statistical multiplexing, the total bandwidth available can be utilized more fully since the links are not idle when only one host is transmitting. The statistical multiplexing allows aggregation of variable bit rate traffic streams.
The document discusses various aspects of transport layer protocols including services provided, primitives, addressing, connection establishment and release, flow control, multiplexing, crash recovery, TCP and UDP, and performance issues. Specific topics covered include Berkeley sockets, an example file server, TCP and UDP headers, congestion control, and fast TPDU processing techniques.
Transport layer protocols provide services like reliable data transfer and connection establishment between applications on networked devices. They address this need through protocols like TCP and UDP. TCP provides reliable, ordered data streams using mechanisms like three-way handshake, sequence numbers, acknowledgments, retransmissions, flow control via sliding windows, and connection termination handshaking. UDP provides simple datagram transmissions without reliability or flow control.
The document discusses various topics related to the transport layer in computer networks including TCP congestion control, retransmission timers, and connections; it also covers the network layer and topics like IP addressing, routing, forwarding, fragmentation, and the IPv4 datagram format. Key concepts are explained like congestion window, slow start, retransmission timeouts, and the AIMD congestion control algorithm used by TCP.
Module 3: Transport layer
Transport layer services, Multiplexing and demultiplexing, User datagram protocol, Transmission control protocol: connection, features, segment, Round-Trip Time estimation and timeout, Flow control, Congestion control, SCTP
The document summarizes key topics related to transport layer protocols:
- It describes the services provided by the transport layer, including addressing, connection establishment and release, flow control, and multiplexing.
- It provides details on common transport protocols like TCP and UDP, including their packet headers, connection management, congestion control, and performance issues at high speeds.
- It also presents an example transport protocol and uses finite state machines to model its operation and connection management.
The document outlines a syllabus for a computer networks course taught by Usha Barad. The syllabus covers 5 topics: 1) introduction to computer networks and the Internet, 2) application layer, 3) transport layer, 4) network layer, and 5) link layer and local area networks. It also lists recommended reference books for the course.
This document discusses the use and copyright of slides from the textbook "Computer Networking: A Top Down Approach" by Jim Kurose and Keith Ross. It states that the slides are being made freely available for educational use provided that the source is cited and the copyright is acknowledged if posted online. The document asks users to mention the source of the slides if used in a class and to note the authors' copyright if posted on a website.
The document discusses topics related to the network layer, including:
1. It describes virtual circuits and datagrams, which are two methods for transferring data across networks.
2. It covers IPv4 addressing concepts such as address space, notations, classful and classless addressing, subnetting, and network address translation.
3. It provides an overview of additional network layer topics like IPv6 addressing, routing algorithms, internet control protocols, and routing protocols.
This document provides an overview of various topics related to the network layer, including IPv4, IPv6, ARP, RARP, mobile IP, routing algorithms, and routing protocols. It begins with basics of IPv4 such as its addressing scheme and role in interconnecting networks. IPv6 is then introduced, along with reasons for its development and key features like its large 128-bit addresses. Address Resolution Protocol (ARP) and Reverse ARP (RARP) are also covered. The document concludes by discussing routing algorithms like link-state and distance-vector, as well as protocols including RIP, OSPF, and BGP.
This document discusses fundamentals and link layer concepts in computer networks including:
- Network requirements, layering, protocols, and Internet architecture
- Link layer services such as framing, error detection, and flow control
- Performance metrics including bandwidth, latency, and the relationship between delay and bandwidth
- Common communication patterns like client-server and examples of TCP and UDP socket programming in C
This document discusses the seven layers of the OSI model. It describes each layer in detail, including their functions and protocols. The physical layer is responsible for transmitting raw bits over a communication channel. The data link layer handles framing and accessing the physical medium. The network layer handles logical addressing and routing. The transport layer provides reliable data transmission and flow control. The session layer manages connections between applications. The presentation layer converts between different data representations. The application layer contains protocols for common network applications and interacts directly with software.
The document summarizes key aspects of the transport layer. It discusses how the transport layer provides logical communication between application processes running on different hosts by abstracting physical network details. It then describes the services provided by the transport layer including connection-oriented and connectionless services. It also discusses topics like quality of service, transport service primitives, addressing, connection establishment and release, flow control, multiplexing, and crash recovery for the transport layer.
The transport layer provides efficient, reliable, and cost-effective process-to-process delivery by making use of network layer services. The transport layer works through transport entities to achieve its goal of reliable delivery between application processes. It provides an interface for applications to access its services.
Module 1
Data communication components : Physical media, Packet switching, Circuit switching, Delay, loss and throughput,
Network topology, Protocols and standards, OSI model, Connecting LAN and virtual LAN
The document discusses the Transport layer protocols TCP and UDP. It describes TCP as a connection-oriented protocol that provides reliable, ordered delivery of streams of data through mechanisms like sequencing, acknowledgment, flow control and error checking. UDP is described as a simpler connectionless protocol that provides best-effort delivery without checking for errors or lost packets. The key concepts of ports, sockets, multiplexing and demultiplexing are also covered, as well as the header formats and functions of TCP and UDP.
The document discusses transport layer protocols and services including:
- TCP provides reliable, in-order delivery through congestion control, flow control, and connection setup. UDP provides unreliable, unordered delivery with no connection.
- Transport protocols multiplex and demultiplex data between applications using port numbers. TCP uses a 4-tuple of IP addresses and port numbers to identify each connection.
- UDP is useful for streaming multimedia since it is loss tolerant but rate sensitive, while TCP provides reliability through congestion control and retransmissions.
The document provides an overview of the transport layer in computer networks. It discusses the key services provided by the transport layer, including reliable data transmission and isolating applications from the underlying network technology. It introduces some common transport layer protocols like TCP and UDP, and describes important transport layer concepts such as connection-oriented vs. connectionless services, transport service primitives, and elements that transport protocols must address like error control and flow control.
Transport Layer Services : Multiplexing And DemultiplexingKeyur Vadodariya
This document discusses the transport layer of computer networks. It begins with introducing the group members and topic, which is the transport layer introduction, services, multiplexing and demultiplexing. Then it provides definitions of the transport layer, its functions and services. It describes how the transport layer provides process to process delivery, end-to-end connections, congestion control, data integrity, flow control, multiplexing and demultiplexing. It explains the differences between connectionless and connection-oriented multiplexing and demultiplexing. In the end, it lists some references.
This document summarizes key aspects of the transport layer:
- The transport layer provides logical communication between application processes running on different hosts and handles reliable data transfer.
- It provides both connection-oriented and connectionless services to the application layer. Quality of service parameters like throughput and delay can be negotiated.
- Transport layer protocols like TCP and UDP are described. TCP provides reliable byte-stream delivery using connections while UDP provides best-effort unreliable datagram delivery.
Overview of transport protocols.
The transport layer (OSI layer 4) is the interface between the network and application (network API).
The transport layer provides data transport service and some level of quality of service (QoS) to the application.
While all transport protocols offer data transport services, they have varying levels of quality of service in terms of error detection and correction, packet ordering and packet delay.
Simple transport protocols like UDP are often connectionless while connection-oriented transport protocols like TCP provide many quality of service properties.
The document discusses the transport layer in computer networks. It provides 3 key points:
1. The transport layer provides a service to the application layer and obtains a service from the network layer. It is responsible for multiplexing/demultiplexing, reliable data transfer, flow control, and congestion control.
2. The main transport layer protocols used in the Internet are UDP (connectionless) and TCP (connection-oriented). TCP provides reliable in-order byte streams with congestion control and flow control. UDP is unreliable and unordered.
3. Reliable data transfer protocols like RDT use mechanisms like checksums, acknowledgements, negative acknowledgements, retransmissions, and sequence numbers to
The document provides an overview of the transport layer chapter from the textbook "Computer Networking: A Top Down Approach". It outlines the key topics that will be covered, including multiplexing and demultiplexing, connectionless transport with UDP, reliable data transfer, connection-oriented transport with TCP, and principles of congestion control. Examples are given of how multiplexing and demultiplexing work in both connectionless and connection-oriented transport.
This document provides an outline and overview of key topics in the transport layer chapter of a computer networking textbook. It introduces the goals of understanding transport layer services like multiplexing and demultiplexing, reliable data transfer, and congestion control. It summarizes the two main Internet transport protocols - UDP, which provides a connectionless unreliable service, and TCP, which provides connection-oriented reliable delivery along with congestion control. It also outlines the process of developing a reliable data transfer protocol incrementally to handle an unreliable channel.
The document outlines a syllabus for a computer networks course taught by Usha Barad. The syllabus covers 5 topics: 1) introduction to computer networks and the Internet, 2) application layer, 3) transport layer, 4) network layer, and 5) link layer and local area networks. It also lists recommended reference books for the course.
This document discusses the use and copyright of slides from the textbook "Computer Networking: A Top Down Approach" by Jim Kurose and Keith Ross. It states that the slides are being made freely available for educational use provided that the source is cited and the copyright is acknowledged if posted online. The document asks users to mention the source of the slides if used in a class and to note the authors' copyright if posted on a website.
The document discusses topics related to the network layer, including:
1. It describes virtual circuits and datagrams, which are two methods for transferring data across networks.
2. It covers IPv4 addressing concepts such as address space, notations, classful and classless addressing, subnetting, and network address translation.
3. It provides an overview of additional network layer topics like IPv6 addressing, routing algorithms, internet control protocols, and routing protocols.
This document provides an overview of various topics related to the network layer, including IPv4, IPv6, ARP, RARP, mobile IP, routing algorithms, and routing protocols. It begins with basics of IPv4 such as its addressing scheme and role in interconnecting networks. IPv6 is then introduced, along with reasons for its development and key features like its large 128-bit addresses. Address Resolution Protocol (ARP) and Reverse ARP (RARP) are also covered. The document concludes by discussing routing algorithms like link-state and distance-vector, as well as protocols including RIP, OSPF, and BGP.
This document discusses fundamentals and link layer concepts in computer networks including:
- Network requirements, layering, protocols, and Internet architecture
- Link layer services such as framing, error detection, and flow control
- Performance metrics including bandwidth, latency, and the relationship between delay and bandwidth
- Common communication patterns like client-server and examples of TCP and UDP socket programming in C
This document discusses the seven layers of the OSI model. It describes each layer in detail, including their functions and protocols. The physical layer is responsible for transmitting raw bits over a communication channel. The data link layer handles framing and accessing the physical medium. The network layer handles logical addressing and routing. The transport layer provides reliable data transmission and flow control. The session layer manages connections between applications. The presentation layer converts between different data representations. The application layer contains protocols for common network applications and interacts directly with software.
The document summarizes key aspects of the transport layer. It discusses how the transport layer provides logical communication between application processes running on different hosts by abstracting physical network details. It then describes the services provided by the transport layer including connection-oriented and connectionless services. It also discusses topics like quality of service, transport service primitives, addressing, connection establishment and release, flow control, multiplexing, and crash recovery for the transport layer.
The transport layer provides efficient, reliable, and cost-effective process-to-process delivery by making use of network layer services. The transport layer works through transport entities to achieve its goal of reliable delivery between application processes. It provides an interface for applications to access its services.
Module 1
Data communication components : Physical media, Packet switching, Circuit switching, Delay, loss and throughput,
Network topology, Protocols and standards, OSI model, Connecting LAN and virtual LAN
The document discusses the Transport layer protocols TCP and UDP. It describes TCP as a connection-oriented protocol that provides reliable, ordered delivery of streams of data through mechanisms like sequencing, acknowledgment, flow control and error checking. UDP is described as a simpler connectionless protocol that provides best-effort delivery without checking for errors or lost packets. The key concepts of ports, sockets, multiplexing and demultiplexing are also covered, as well as the header formats and functions of TCP and UDP.
The document discusses transport layer protocols and services including:
- TCP provides reliable, in-order delivery through congestion control, flow control, and connection setup. UDP provides unreliable, unordered delivery with no connection.
- Transport protocols multiplex and demultiplex data between applications using port numbers. TCP uses a 4-tuple of IP addresses and port numbers to identify each connection.
- UDP is useful for streaming multimedia since it is loss tolerant but rate sensitive, while TCP provides reliability through congestion control and retransmissions.
The document provides an overview of the transport layer in computer networks. It discusses the key services provided by the transport layer, including reliable data transmission and isolating applications from the underlying network technology. It introduces some common transport layer protocols like TCP and UDP, and describes important transport layer concepts such as connection-oriented vs. connectionless services, transport service primitives, and elements that transport protocols must address like error control and flow control.
Transport Layer Services : Multiplexing And DemultiplexingKeyur Vadodariya
This document discusses the transport layer of computer networks. It begins with introducing the group members and topic, which is the transport layer introduction, services, multiplexing and demultiplexing. Then it provides definitions of the transport layer, its functions and services. It describes how the transport layer provides process to process delivery, end-to-end connections, congestion control, data integrity, flow control, multiplexing and demultiplexing. It explains the differences between connectionless and connection-oriented multiplexing and demultiplexing. In the end, it lists some references.
This document summarizes key aspects of the transport layer:
- The transport layer provides logical communication between application processes running on different hosts and handles reliable data transfer.
- It provides both connection-oriented and connectionless services to the application layer. Quality of service parameters like throughput and delay can be negotiated.
- Transport layer protocols like TCP and UDP are described. TCP provides reliable byte-stream delivery using connections while UDP provides best-effort unreliable datagram delivery.
Overview of transport protocols.
The transport layer (OSI layer 4) is the interface between the network and application (network API).
The transport layer provides data transport service and some level of quality of service (QoS) to the application.
While all transport protocols offer data transport services, they have varying levels of quality of service in terms of error detection and correction, packet ordering and packet delay.
Simple transport protocols like UDP are often connectionless while connection-oriented transport protocols like TCP provide many quality of service properties.
The document discusses the transport layer in computer networks. It provides 3 key points:
1. The transport layer provides a service to the application layer and obtains a service from the network layer. It is responsible for multiplexing/demultiplexing, reliable data transfer, flow control, and congestion control.
2. The main transport layer protocols used in the Internet are UDP (connectionless) and TCP (connection-oriented). TCP provides reliable in-order byte streams with congestion control and flow control. UDP is unreliable and unordered.
3. Reliable data transfer protocols like RDT use mechanisms like checksums, acknowledgements, negative acknowledgements, retransmissions, and sequence numbers to
The document provides an overview of the transport layer chapter from the textbook "Computer Networking: A Top Down Approach". It outlines the key topics that will be covered, including multiplexing and demultiplexing, connectionless transport with UDP, reliable data transfer, connection-oriented transport with TCP, and principles of congestion control. Examples are given of how multiplexing and demultiplexing work in both connectionless and connection-oriented transport.
This document provides an outline and overview of key topics in the transport layer chapter of a computer networking textbook. It introduces the goals of understanding transport layer services like multiplexing and demultiplexing, reliable data transfer, and congestion control. It summarizes the two main Internet transport protocols - UDP, which provides a connectionless unreliable service, and TCP, which provides connection-oriented reliable delivery along with congestion control. It also outlines the process of developing a reliable data transfer protocol incrementally to handle an unreliable channel.
This document describes slides for a chapter on the transport layer. It states that the slides can be freely used and modified for educational purposes with proper attribution. It asks users to mention the source if the slides are used for a class and to note any adaptation if slides are posted online. The document also provides copyright information for the material.
The document summarizes key aspects of the transport layer from Chapter 3 of the textbook "Computer Networking: A Top Down Approach". It discusses the goals of the transport layer, including providing multiplexing/demultiplexing, reliable data transfer, congestion control and flow control. It then describes the two main Internet transport protocols - UDP (connectionless) and TCP (connection-oriented), focusing on their differences and how TCP provides reliability.
The document provides an overview of the transport layer chapter from the textbook "Computer Networking: A Top Down Approach". It begins with goals of understanding transport layer services like multiplexing and demultiplexing. It then outlines the chapter sections which will cover transport layer protocols UDP and TCP, principles of reliable data transfer, and congestion control. Transport layer protocols provide end-to-end communication between application processes on different hosts.
The document provides an overview of the transport layer and outlines the goals and key topics to be covered in the chapter, including transport-layer services, multiplexing and demultiplexing, connectionless transport using UDP, principles of reliable data transfer, connection-oriented transport using TCP, and principles of congestion control. It also includes slides on specific transport layer topics like UDP and TCP segment structure, and multiplexing and demultiplexing.
The document provides an overview of transport layer services and protocols:
1. It discusses the goals of the transport layer including multiplexing, demultiplexing, reliable data transfer, flow control, and congestion control.
2. It describes the two main Internet transport protocols - UDP which provides connectionless unreliable data transfer, and TCP which provides connection-oriented reliable data transfer.
3. It outlines the chapter which covers transport layer services, multiplexing and demultiplexing, UDP, principles of reliable data transfer, TCP, and congestion control.
The document discusses the transport layer and key protocols TCP and UDP. It outlines the chapter which covers transport layer services like multiplexing and demultiplexing, connectionless transport with UDP, principles of reliable data transfer, connection-oriented transport with TCP including segment structure, reliable data transfer, flow control, and connection management, and principles of congestion control including TCP congestion control. It provides details on multiplexing and demultiplexing to direct segments to the appropriate socket, UDP using port numbers but providing unreliable delivery, and TCP using a 4-tuple to identify connections and providing reliable in-order byte stream delivery with congestion control and flow control.
This document provides an overview of the transport layer chapter from the textbook "Computer Networking: A Top Down Approach". It discusses the goals of understanding transport layer services like multiplexing and demultiplexing. It also covers the two main Internet transport protocols - UDP which provides connectionless unreliable data transfer, and TCP which provides connection-oriented reliable data transfer. The document outlines the rest of the chapter which will discuss TCP and UDP in more detail as well as principles of reliable data transfer and congestion control.
The document discusses the transport layer and its goals of providing reliable data transfer between application processes running on different hosts. It covers the key transport layer protocols UDP and TCP. UDP provides a basic unreliable datagram service, while TCP enables reliable in-order delivery of data through mechanisms like congestion control, flow control, and connection setup. The document also examines concepts like multiplexing, demultiplexing, and how reliable data transfer is achieved even over unreliable network channels through the use of sequence numbers, acknowledgments, and retransmissions.
TRANSPORT LAYER_DATA STRUCTURE LEARNING MATERIALjainyshah20
This document provides an overview of the transport layer and outlines the goals and key topics to be covered in the chapter. It introduces the transport layer services and protocols, including multiplexing, demultiplexing, UDP as a connectionless transport, and TCP as a connection-oriented reliable transport. It also outlines the principles of reliable data transfer and congestion control that will be discussed.
Computer networks Module 3 Transport layerclaudle200415
The document discusses the transport layer and provides an overview of key concepts. It introduces transport layer services including multiplexing, demultiplexing, and reliable data transfer. It describes the two main Internet transport protocols - UDP which provides connectionless unreliable data transfer, and TCP which provides connection-oriented reliable transfer. The document outlines the concepts that will be covered in more detail, including multiplexing, demultiplexing, the transport protocols UDP and TCP, and congestion control.
The document provides an overview of the transport layer and its goals and protocols. It discusses the principles of transport layer services including multiplexing, demultiplexing, reliable data transfer, flow control, and congestion control. It describes the two main Internet transport layer protocols: UDP, which provides connectionless and unreliable data transfer, and TCP, which provides connection-oriented and reliable data transfer with congestion control. It then goes on to discuss in detail the principles and mechanisms behind reliable data transfer, including error detection, acknowledgements, negative acknowledgements, sequencing, and handling duplicate packets.
The document discusses the transport layer in computer networks. It describes the key goals and services of the transport layer, including multiplexing, demultiplexing, reliable data transfer, flow control, and congestion control. It also outlines the main Internet transport layer protocols - UDP, which provides connectionless unreliable data transfer, and TCP, which provides connection-oriented reliable data transfer along with congestion control. The document discusses how transport layer protocols provide logical communication between application processes running on different hosts.
The transport layer provides end-to-end communication between processes on different machines. Two main transport protocols are TCP and UDP. TCP provides reliable, connection-oriented data transmission using acknowledgments and retransmissions. UDP provides simpler, connectionless transmission but without reliability. Both protocols use port numbers to identify processes and negotiate quality of service options during connection establishment.
The transport layer chapter discusses process-to-process delivery and the transport layer protocols TCP and UDP. TCP provides reliable, connection-oriented data transfer using sequencing, acknowledgements and retransmissions. UDP provides simpler, connectionless delivery without reliability. Well-known ports are assigned for standard services like DNS, HTTP, FTP. TCP uses sliding windows and congestion control to prevent overwhelming the receiver. Reliability and flow control are implemented end-to-end rather than just link-by-link.
Jaimin chp-6 - transport layer- 2011 batchJaimin Jani
The document discusses the transport layer in computer networking. It explains that the transport layer provides logical communication between processes running on different hosts. It describes two main transport protocols: TCP and UDP. TCP provides connection-oriented transmission that is reliable and in-order, while UDP provides connectionless transmission that is unreliable and unordered. The document also covers topics like connection establishment, port numbers, sockets, and services provided by the transport layer.
TCP and UDP are transport layer protocols that package and deliver data between applications. TCP provides reliable, ordered delivery through connection establishment and packet sequencing. UDP provides faster, unreliable datagram delivery without connections. Common applications using TCP include HTTP, FTP, and SMTP. Common UDP applications include DNS, DHCP, and streaming media.
computer network having transport layer.pptHarisKhan35881
This document provides an overview of slides for a computer networking course. It states that the slides can be freely used and modified with attribution given to the authors and their book. It also notes the copyright of the material.
This document provides an overview of slides for a chapter on transport layer networking. It states that the slides can be freely used and modified with proper attribution given. It also notes the copyright of the material.
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Guest Speaker Segment with Hannah Barrington: Dive into the world of dynamic real estate marketing with Hannah, the Marketing Manager at Workspace Group. Hear firsthand how their team generates engaging descriptions for thousands of office units by integrating diverse data sources—from PDF floorplans to web pages—using FME transformers, like OpenAIVisionConnector and AnthropicVisionConnector. This use case will show you how GenAI can streamline content creation for marketing across the board.
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- The top challenges for privacy leaders, practitioners, and organizations in 2024
- Key themes to consider in developing and maintaining your privacy program
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HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
Chapter3 transport
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8. Multiplexing/demultiplexing application transport network link physical P1 application transport network link physical application transport network link physical P2 P3 P4 P1 host 1 host 2 host 3 = process = socket delivering received segments to correct socket gathering data from multiple sockets, enveloping data with header (later used for demultiplexing) Demultiplexing at rcv host: Multiplexing at send host:
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13. Connection-oriented demux (cont) Client IP:B server IP: C SP: 9157 DP: 80 D-IP:C S-IP: A D-IP:C S-IP: B D-IP:C S-IP: B P1 client IP: A P1 P2 P4 SP: 9157 DP: 80 P5 P6 P3 SP: 5775 DP: 80
14. Connection-oriented demux: Threaded Web Server Client IP:B server IP: C SP: 9157 DP: 80 P4 D-IP:C S-IP: A D-IP:C S-IP: B D-IP:C S-IP: B P1 client IP: A P1 P2 SP: 9157 DP: 80 P3 SP: 5775 DP: 80
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24. Reliable data transfer: getting started send side receive side rdt_send(): called from above, (e.g., by app.). Passed data to deliver to receiver upper layer udt_send(): called by rdt, to transfer packet over unreliable channel to receiver rdt_rcv(): called when packet arrives on rcv-side of channel deliver_data(): called by rdt to deliver data to upper
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28. rdt2.0: FSM specification Wait for call from above snkpkt = make_pkt(data, checksum) udt_send(sndpkt) extract(rcvpkt,data) deliver_data(data) udt_send(ACK) rdt_rcv(rcvpkt) && notcorrupt(rcvpkt) rdt_rcv(rcvpkt) && isACK(rcvpkt) udt_send(sndpkt) rdt_rcv(rcvpkt) && isNAK(rcvpkt) sender receiver rdt_send(data) udt_send(NAK) rdt_rcv(rcvpkt) && corrupt(rcvpkt) Wait for ACK or NAK Wait for call from below
29. rdt2.0: operation with no errors Wait for call from above snkpkt = make_pkt(data, checksum) udt_send(sndpkt) extract(rcvpkt,data) deliver_data(data) udt_send(ACK) rdt_rcv(rcvpkt) && notcorrupt(rcvpkt) rdt_rcv(rcvpkt) && isACK(rcvpkt) udt_send(sndpkt) rdt_rcv(rcvpkt) && isNAK(rcvpkt) Wait for call from below rdt_send(data) udt_send(NAK) rdt_rcv(rcvpkt) && corrupt(rcvpkt) Wait for ACK or NAK
30. rdt2.0: error scenario Wait for call from above snkpkt = make_pkt(data, checksum) udt_send(sndpkt) extract(rcvpkt,data) deliver_data(data) udt_send(ACK) rdt_rcv(rcvpkt) && notcorrupt(rcvpkt) rdt_rcv(rcvpkt) && isACK(rcvpkt) udt_send(sndpkt) rdt_rcv(rcvpkt) && isNAK(rcvpkt) Wait for call from below rdt_send(data) udt_send(NAK) rdt_rcv(rcvpkt) && corrupt(rcvpkt) Wait for ACK or NAK
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32. rdt2.1: sender, handles garbled ACK/NAKs Wait for call 0 from above sndpkt = make_pkt(0, data, checksum) udt_send(sndpkt) rdt_send(data) udt_send(sndpkt) rdt_rcv(rcvpkt) && ( corrupt(rcvpkt) || isNAK(rcvpkt) ) sndpkt = make_pkt(1, data, checksum) udt_send(sndpkt) rdt_send(data) rdt_rcv(rcvpkt) && notcorrupt(rcvpkt) && isACK(rcvpkt) udt_send(sndpkt) rdt_rcv(rcvpkt) && ( corrupt(rcvpkt) || isNAK(rcvpkt) ) rdt_rcv(rcvpkt) && notcorrupt(rcvpkt) && isACK(rcvpkt) Wait for ACK or NAK 0 Wait for call 1 from above Wait for ACK or NAK 1
42. rdt3.0: stop-and-wait operation first packet bit transmitted, t = 0 sender receiver RTT last packet bit transmitted, t = L / R first packet bit arrives last packet bit arrives, send ACK ACK arrives, send next packet, t = RTT + L / R
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44. Pipelining: increased utilization first packet bit transmitted, t = 0 sender receiver RTT last bit transmitted, t = L / R first packet bit arrives last packet bit arrives, send ACK ACK arrives, send next packet, t = RTT + L / R last bit of 2 nd packet arrives, send ACK last bit of 3 rd packet arrives, send ACK Increase utilization by a factor of 3!
58. TCP segment structure URG: urgent data (generally not used) ACK: ACK # valid PSH: push data now (generally not used) RST, SYN, FIN: connection estab (setup, teardown commands) # bytes rcvr willing to accept counting by bytes of data (not segments!) Internet checksum (as in UDP) source port # dest port # 32 bits application data (variable length) sequence number acknowledgement number Receive window Urg data pnter checksum F S R P A U head len not used Options (variable length)
68. TCP: retransmission scenarios Host A Seq=100, 20 bytes data ACK=100 premature timeout Host B Seq=92, 8 bytes data ACK=120 Seq=92, 8 bytes data ACK=120 Seq=92 timeout SendBase = 100 SendBase = 120 SendBase = 120 Sendbase = 100 time Seq=92 timeout Host A Seq=92, 8 bytes data ACK=100 loss timeout lost ACK scenario Host B X Seq=92, 8 bytes data ACK=100 time
69. TCP retransmission scenarios (more) SendBase = 120 Host A Seq=92, 8 bytes data ACK=100 loss timeout Cumulative ACK scenario Host B X Seq=100, 20 bytes data ACK=120 time
70. TCP ACK generation [RFC 1122, RFC 2581] Event at Receiver Arrival of in-order segment with expected seq #. All data up to expected seq # already ACKed Arrival of in-order segment with expected seq #. One other segment has ACK pending Arrival of out-of-order segment higher-than-expect seq. # . Gap detected Arrival of segment that partially or completely fills gap TCP Receiver action Delayed ACK. Wait up to 500ms for next segment. If no next segment, send ACK Immediately send single cumulative ACK, ACKing both in-order segments Immediately send duplicate ACK , indicating seq. # of next expected byte Immediate send ACK, provided that segment starts at lower end of gap
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72. Figure 3.37 Resending a segment after triple duplicate ACK Host A timeout Host B time X resend 2 nd segment
73. Fast retransmit algorithm: event: ACK received, with ACK field value of y if (y > SendBase) { SendBase = y if (there are currently not-yet-acknowledged segments) start timer } else { increment count of dup ACKs received for y if (count of dup ACKs received for y = 3) { resend segment with sequence number y } a duplicate ACK for already ACKed segment fast retransmit
100. TCP sender congestion control SS or CA SS or CA SS or CA Congestion Avoidance (CA) Slow Start (SS) State CongWin and Threshold not changed Increment duplicate ACK count for segment being acked Duplicate ACK Enter slow start Threshold = CongWin/2, CongWin = 1 MSS, Set state to “Slow Start” Timeout Fast recovery, implementing multiplicative decrease. CongWin will not drop below 1 MSS. Threshold = CongWin/2, CongWin = Threshold, Set state to “Congestion Avoidance” Loss event detected by triple duplicate ACK Additive increase, resulting in increase of CongWin by 1 MSS every RTT CongWin = CongWin+MSS * (MSS/CongWin) ACK receipt for previously unacked data Resulting in a doubling of CongWin every RTT CongWin = CongWin + MSS, If (CongWin > Threshold) set state to “Congestion Avoidance” ACK receipt for previously unacked data Commentary TCP Sender Action Event
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Editor's Notes
Kurose and Ross forgot to say anything about wrapping the carry and adding it to low order bit