The Transport Layer
... 1. CPU speed is more important than network speed. 2. Reduce packet count to reduce software overhead. 3. Minimize context switches. ...
... 1. CPU speed is more important than network speed. 2. Reduce packet count to reduce software overhead. 3. Minimize context switches. ...
PowerPoint XP
... If no timeout, more data is sent If timeout, TCP reduces the amount of data being sent ...
... If no timeout, more data is sent If timeout, TCP reduces the amount of data being sent ...
PPT Version
... TCP's window-based congestion control functions by estimating the available bandwidth-delay product. A loss happens when the congestion window exceeds the available bandwidth-delay product (BDP) Large delay and/or rate variation causes the available BDP to vary as well. Thus, TCP's window-based ...
... TCP's window-based congestion control functions by estimating the available bandwidth-delay product. A loss happens when the congestion window exceeds the available bandwidth-delay product (BDP) Large delay and/or rate variation causes the available BDP to vary as well. Thus, TCP's window-based ...
PowerPoint XP
... • Implications of timeout period at a sender – Too long unnecessary waiting – Too short a message is transmitted when an acknowledgement is in transit ...
... • Implications of timeout period at a sender – Too long unnecessary waiting – Too short a message is transmitted when an acknowledgement is in transit ...
r02-review-transport..
... • Receiver has to hold onto a packet until all prior packets have arrived • Why might this be difficult for just parallel stop & wait? • Sender must prevent buffer overflow at receiver ...
... • Receiver has to hold onto a packet until all prior packets have arrived • Why might this be difficult for just parallel stop & wait? • Sender must prevent buffer overflow at receiver ...
Project Description
... The project will be done in teams of 3-4 people. 1. Each team will select a paper on TCP, from a list that I will provide before the weekend is over. The paper will describe a modification to the basic TCP protocol. 2. You will model the core of the modification by modifying a TCP ioa that I will pr ...
... The project will be done in teams of 3-4 people. 1. Each team will select a paper on TCP, from a list that I will provide before the weekend is over. The paper will describe a modification to the basic TCP protocol. 2. You will model the core of the modification by modifying a TCP ioa that I will pr ...
The Internet and the World Wide Web
... Time To Live (TTL) Checksum Data being transmitted (000110100100101…) ...
... Time To Live (TTL) Checksum Data being transmitted (000110100100101…) ...
PPT - Pages
... – Routers provide feedback to end systems • Single bit indicating congestion (SNA, DECbit, TCP/IP ECN, ATM) • Explicit rate sender should send at – Problem: makes routers complicated ...
... – Routers provide feedback to end systems • Single bit indicating congestion (SNA, DECbit, TCP/IP ECN, ATM) • Explicit rate sender should send at – Problem: makes routers complicated ...
Practice Questions: Congestion Control and Queuing COS 461: Computer Networks
... TCP window behave in such a manner, rather than have a linear slope? (Put another way, why would it be bad if region A had a linear slope?) ...
... TCP window behave in such a manner, rather than have a linear slope? (Put another way, why would it be bad if region A had a linear slope?) ...
MCN 7200 Advanced Internetworking Protocols
... This course shall adopt interactive teaching that shall emphasize on allowing students to use analytical thinking to required to get in depth understanding of advanced network protocols. Teaching patterns shall include class sessions, laboratory sessions, reading assignments of related research pape ...
... This course shall adopt interactive teaching that shall emphasize on allowing students to use analytical thinking to required to get in depth understanding of advanced network protocols. Teaching patterns shall include class sessions, laboratory sessions, reading assignments of related research pape ...
wireless-transport
... – exponential increase (double) of the congestion window up to the congestion threshold, then linear increase (increase by 1) – missing acknowledgement causes the reduction of the congestion threshold to one half of the current congestion window – congestion window starts again with one segment ...
... – exponential increase (double) of the congestion window up to the congestion threshold, then linear increase (increase by 1) – missing acknowledgement causes the reduction of the congestion threshold to one half of the current congestion window – congestion window starts again with one segment ...
Slow Start - ECSE - Rensselaer Polytechnic Institute
... • On detecting a packet loss, TCP sender assumes that network congestion has occurred • On detecting packet loss, TCP sender drastically reduces the congestion window • Reducing congestion window reduces amount of data that can be sent per RTT – throughput may decrease ...
... • On detecting a packet loss, TCP sender assumes that network congestion has occurred • On detecting packet loss, TCP sender drastically reduces the congestion window • Reducing congestion window reduces amount of data that can be sent per RTT – throughput may decrease ...
Chapter 7 TCP Traffic Control
... • TCP rule: if a segment is received out of order, an ack must be issued immediately for the last in-order segment • Fast Retransmit rule: if 4 acks received for same segment, highly likely it was lost, so retransmit immediately, rather than waiting for timeout ...
... • TCP rule: if a segment is received out of order, an ack must be issued immediately for the last in-order segment • Fast Retransmit rule: if 4 acks received for same segment, highly likely it was lost, so retransmit immediately, rather than waiting for timeout ...
ppt
... Summary: TCP Congestion Control • When CongWin is below Threshold, sender in slow-start phase, window grows exponentially. • When CongWin is above Threshold, sender is in congestion-avoidance phase, window grows linearly. ...
... Summary: TCP Congestion Control • When CongWin is below Threshold, sender in slow-start phase, window grows exponentially. • When CongWin is above Threshold, sender is in congestion-avoidance phase, window grows linearly. ...
עבודה מס` 3 – מבוא לרשתות תקשורת תאריך הגשה : 18.12.07 הגשה בזוגות
... receiver window size (RWS) = 1 frame. Note that RWS is the maximum number of out-of-order frames that the receiver is willing to accept. Backup your example with a diagram depicting the messages passing between the sender and receiver. b. Assume n = 16 (SN = 0, …, 15) and the receiver’s NFE (next f ...
... receiver window size (RWS) = 1 frame. Note that RWS is the maximum number of out-of-order frames that the receiver is willing to accept. Backup your example with a diagram depicting the messages passing between the sender and receiver. b. Assume n = 16 (SN = 0, …, 15) and the receiver’s NFE (next f ...
CEN 4500C Computer Networks Fundamentals
... Q. Mention the different kinds of protocols that may be used for congestion control. Argue for (or against) having network-assisted congestion control. (10 points) 1- Back pressure using hop by hop flow control (e.g., Go back N or selective reject) 2- Choke packet that is sent from the congested rou ...
... Q. Mention the different kinds of protocols that may be used for congestion control. Argue for (or against) having network-assisted congestion control. (10 points) 1- Back pressure using hop by hop flow control (e.g., Go back N or selective reject) 2- Choke packet that is sent from the congested rou ...
Split-TCP: State of the Union Address
... packet delivery. In the old model, the packet stream was “reassembled” at each proxy – and bytes were only forwarded once they arrived in order. Per-flow state at each proxy. ...
... packet delivery. In the old model, the packet stream was “reassembled” at each proxy – and bytes were only forwarded once they arrived in order. Per-flow state at each proxy. ...
Automation of Batch Vacuum Pans At D.R.B.C Sugar Factory
... No proxy/does not have a buffering system, instead require sender to retransmit lost packet If SH does not receive ACK, it assumes disconnection and changes the window size of the sender to 0 - Choking Maintain TCP end-to-end semantics Packet loss due to error bits is propagated to sender Freeze TCP ...
... No proxy/does not have a buffering system, instead require sender to retransmit lost packet If SH does not receive ACK, it assumes disconnection and changes the window size of the sender to 0 - Choking Maintain TCP end-to-end semantics Packet loss due to error bits is propagated to sender Freeze TCP ...
PRACTICE QUESTIONS ON RESOURCE ALLOCATION QUESTION 1: Internet Versus Station Wagon
... bandwidth of a station wagon full of tapes.” Suppose you need to deliver a large file between two computers that are 200 km apart and connected by a direct link. This question analyzes when it is faster to drive the data between the two locations, rather than transmit the data? (1a) Suppose the stat ...
... bandwidth of a station wagon full of tapes.” Suppose you need to deliver a large file between two computers that are 200 km apart and connected by a direct link. This question analyzes when it is faster to drive the data between the two locations, rather than transmit the data? (1a) Suppose the stat ...