Introduction - Jigar Pandya
... transmission between two parties. Circuit-switching is ideal when data must be transmitted quickly and must arrive in the same order in which it's sent. This is the case with most real-time data, such as live audio and video. Packet switching is more efficient and robust for data that can withstan ...
... transmission between two parties. Circuit-switching is ideal when data must be transmitted quickly and must arrive in the same order in which it's sent. This is the case with most real-time data, such as live audio and video. Packet switching is more efficient and robust for data that can withstan ...
Evaluating the Eifel Algorithm for TCP in a GPRS Network
... since GPRS implements a rather persistent link layer retransmission scheme. However, the sudden delay spikes can cause TCP to timeout prematurely, and perform unnecessary retransmissions. This paper presents a quantitative evaluation of the Eifel algorithm for TCP [4] within the context of GPRS. The ...
... since GPRS implements a rather persistent link layer retransmission scheme. However, the sudden delay spikes can cause TCP to timeout prematurely, and perform unnecessary retransmissions. This paper presents a quantitative evaluation of the Eifel algorithm for TCP [4] within the context of GPRS. The ...
TCP in wireless environments: problems and solutions
... received in-order packets are acknowledged to the sender by the receiver, by sending corresponding packets (acknowledgments, ACKs) with sequence numbers of the next expected packets. On the other hand, packet loss or reception of outof-order packets indicates failures. To eradicate such failures, TC ...
... received in-order packets are acknowledged to the sender by the receiver, by sending corresponding packets (acknowledgments, ACKs) with sequence numbers of the next expected packets. On the other hand, packet loss or reception of outof-order packets indicates failures. To eradicate such failures, TC ...
Document
... gradually increasing its window size until it senses packet loss - at which point it quickly reduces the window size ...
... gradually increasing its window size until it senses packet loss - at which point it quickly reduces the window size ...
ppt
... • ACK(n): ACKs all pkts up to, including seq # n - “cumulative ACK” – may deceive duplicate ACKs (see receiver) • Single timer for all in-flight pkts • timeout(n): retransmit pkt n and all higher seq # pkts in window ...
... • ACK(n): ACKs all pkts up to, including seq # n - “cumulative ACK” – may deceive duplicate ACKs (see receiver) • Single timer for all in-flight pkts • timeout(n): retransmit pkt n and all higher seq # pkts in window ...
Network Protocols
... Control Protocol Connection oriented – establishes a manually acknowledged session between two hosts. Provides reliability to IP Flow control, sequencing, and error detection and correction. Transport layer ...
... Control Protocol Connection oriented – establishes a manually acknowledged session between two hosts. Provides reliability to IP Flow control, sequencing, and error detection and correction. Transport layer ...
Slides - TERENA Networking Conference 2005
... RTT=117 ms MTU = 1500 Bytes; Avg. throughput over a period of 4000s = 50 Mb/s MTU = 9000 Bytes; Avg. throughput over a period of 4000s = 698 Mb/s ...
... RTT=117 ms MTU = 1500 Bytes; Avg. throughput over a period of 4000s = 50 Mb/s MTU = 9000 Bytes; Avg. throughput over a period of 4000s = 698 Mb/s ...
Network Security CS 478/CIS 678
... – Reliable = Packets delivered in order and no packets are missing – Reliability provided by sequencing and retransmission ...
... – Reliable = Packets delivered in order and no packets are missing – Reliability provided by sequencing and retransmission ...
ATCP: TCP for Mobile Ad Hoc Networks
... Functioning of the ATCP Layer : The ATCP layer is only active at the TCP sender (in a duplex communication, the ATCP layer at both participating nodes will be active). This layer monitors TCP state and the state of the network (based on ECN and ICMP messages) and takes appropriate action. To underst ...
... Functioning of the ATCP Layer : The ATCP layer is only active at the TCP sender (in a duplex communication, the ATCP layer at both participating nodes will be active). This layer monitors TCP state and the state of the network (based on ECN and ICMP messages) and takes appropriate action. To underst ...
Remi Ando, Tutomu Murase, Masato Oguchi
... ssthresh is flexibly set by using the target bandwidth cwnd is led to keep the target bandwidth, and kept large as much as possible even in packet loss it avoids congestion collapsing ...
... ssthresh is flexibly set by using the target bandwidth cwnd is led to keep the target bandwidth, and kept large as much as possible even in packet loss it avoids congestion collapsing ...
02-Protocol Architecture
... data between applications a TCP segment is the basic protocol unit TCP tracks segments between entities for duration of each connection ...
... data between applications a TCP segment is the basic protocol unit TCP tracks segments between entities for duration of each connection ...
Wireless Communication
... Concerned with the exchange of data between an end system and the network to which it's attached Software used depends on type of network ...
... Concerned with the exchange of data between an end system and the network to which it's attached Software used depends on type of network ...
3rd Edition: Chapter 3
... multiplicative decrease: cut cwnd in half after loss To start with: slow start additively increase window size … ...
... multiplicative decrease: cut cwnd in half after loss To start with: slow start additively increase window size … ...
Lecture 6: Vector
... – Latency reduces from function of: number of intermediate switches X by the size of the packet to ...
... – Latency reduces from function of: number of intermediate switches X by the size of the packet to ...
Elektronischer Hšrsaal
... From RFC 2581; underlying idea: cwnd = number of packets in flight 1. Upon reception of third duplicate ACK (DupACK): ssthresh = FlightSize/2 2. Retransmit lost segment (fast retransmit); cwnd = ssthresh + 3*SMSS ("inflates" cwnd by the number of segments (three) that have left the network and which ...
... From RFC 2581; underlying idea: cwnd = number of packets in flight 1. Upon reception of third duplicate ACK (DupACK): ssthresh = FlightSize/2 2. Retransmit lost segment (fast retransmit); cwnd = ssthresh + 3*SMSS ("inflates" cwnd by the number of segments (three) that have left the network and which ...
Comtech EF Data Releases TurboVR™ Router With Acceleration Delivering Performance Gains For Satellite Communications
... Telecommunications Corporation (NASDAQ: CMTL), announced today the release of turboVR™, a new combination router with acceleration. This product combats the inherent challenges of transmitting Transmission Control Protocol/Internet Protocol (TCP/IP) over satellite communications links by transparent ...
... Telecommunications Corporation (NASDAQ: CMTL), announced today the release of turboVR™, a new combination router with acceleration. This product combats the inherent challenges of transmitting Transmission Control Protocol/Internet Protocol (TCP/IP) over satellite communications links by transparent ...
Document
... Let us assume that the message is four times longer than the maximum packet size, so the network layer has to break it into four packets, 1, 2, 3, and 4 and sends each of them in turn to router A using some point-topoint protocol. Every router has an internal table telling it where to send ...
... Let us assume that the message is four times longer than the maximum packet size, so the network layer has to break it into four packets, 1, 2, 3, and 4 and sends each of them in turn to router A using some point-topoint protocol. Every router has an internal table telling it where to send ...
Transport Protocols
... expected from other side it’s a cumulative ACK Qn: how receiver handles out-of-order segments? puts them in receive buffer but does not acknowledge them ...
... expected from other side it’s a cumulative ACK Qn: how receiver handles out-of-order segments? puts them in receive buffer but does not acknowledge them ...
Week15_2
... • Sending frames from one end of a link to the other end of the link. • The problem is: the receiver may be slow, the link may lose frames, both the data frames and the control frames you want to use. ...
... • Sending frames from one end of a link to the other end of the link. • The problem is: the receiver may be slow, the link may lose frames, both the data frames and the control frames you want to use. ...
Chapter 9
... into its application layer – TCP/IP combines the OSI data link and physical layers into one layer – TCP/IP appears simpler because it has fewer layers – TCP/IP transport layer using UDP does not always guarantee reliable delivery of packets as the transport layer in the OSI model does ...
... into its application layer – TCP/IP combines the OSI data link and physical layers into one layer – TCP/IP appears simpler because it has fewer layers – TCP/IP transport layer using UDP does not always guarantee reliable delivery of packets as the transport layer in the OSI model does ...
