Lect10
... • Initial `packet 4' can arrive during second session, so that the data from that old packet rather than the current `packet 4' is inserted into the data • Protocols attach session number to each packet in a protocol session to differentiate packets from different sessions TCP/IP: Basics ...
... • Initial `packet 4' can arrive during second session, so that the data from that old packet rather than the current `packet 4' is inserted into the data • Protocols attach session number to each packet in a protocol session to differentiate packets from different sessions TCP/IP: Basics ...
NAME: Computer Science 461 Midterm Exam March 30, 2009
... 1D. [4 points] In the previous example of 1c, would anything be different if all packets were lost after you reached 32,000 bytes per second, instead of just a single packet? If so, what is the next instantaneous rate TCP will send at in this example, and how long (in terms of RTTs) would it now tak ...
... 1D. [4 points] In the previous example of 1c, would anything be different if all packets were lost after you reached 32,000 bytes per second, instead of just a single packet? If so, what is the next instantaneous rate TCP will send at in this example, and how long (in terms of RTTs) would it now tak ...
Performance Diagnosis and Improvement in Data Center
... – More timeouts with low-rate flows (10-100KB/s) ...
... – More timeouts with low-rate flows (10-100KB/s) ...
PDF Version
... mobile hosts, in which the topology rapidly changes due to the movement of mobile hosts. This frequent topology may lead to sudden packet losses and delays. Transport protocols like TCP have been built mainly for reliable, xed networks. Hence, when used in adhoc networks, TCP misinterprets this los ...
... mobile hosts, in which the topology rapidly changes due to the movement of mobile hosts. This frequent topology may lead to sudden packet losses and delays. Transport protocols like TCP have been built mainly for reliable, xed networks. Hence, when used in adhoc networks, TCP misinterprets this los ...
No Slide Title - Ed Lazowska
... Summary Using TCP/IP and lower layers, we can get multipacket messages delivered reliably from address space A on machine B to address space C on machine D, where machines B and D are many heterogeneous network hops apart, without knowing any of the ...
... Summary Using TCP/IP and lower layers, we can get multipacket messages delivered reliably from address space A on machine B to address space C on machine D, where machines B and D are many heterogeneous network hops apart, without knowing any of the ...
Ch06
... • To overcome the inefficiencies of the stop-andwait scheme, in which only one PDU at a time can be in transit. • Decouples flow control from ACK —May ACK without granting credit and vice versa ...
... • To overcome the inefficiencies of the stop-andwait scheme, in which only one PDU at a time can be in transit. • Decouples flow control from ACK —May ACK without granting credit and vice versa ...
Click here to free sample.
... 2. The most widely used protocol architecture is the ________ protocol suite, which consists of physical, network access, internet, transport, and application layers. 3. In the TCP/IP protocol architecture, the ________ layer is concerned with specifying the characteristics of the transmission mediu ...
... 2. The most widely used protocol architecture is the ________ protocol suite, which consists of physical, network access, internet, transport, and application layers. 3. In the TCP/IP protocol architecture, the ________ layer is concerned with specifying the characteristics of the transmission mediu ...
Chapter One
... IP is an unreliable, connectionless protocol, which means it does not guarantee delivery of data ...
... IP is an unreliable, connectionless protocol, which means it does not guarantee delivery of data ...
TCP/IP Basics
... A more efficient way to assign IP addresses than using IP address “classes” The network and host addresses boundary is not always made on octet boundaries, but may be made any specific number of bits from the beginning of the address Steal bits from the network address for use in the host address an ...
... A more efficient way to assign IP addresses than using IP address “classes” The network and host addresses boundary is not always made on octet boundaries, but may be made any specific number of bits from the beginning of the address Steal bits from the network address for use in the host address an ...
Security The big picture Some consequences Three types of threat
... - Turned out they were being flooded with ICMP echo replies - Many DDoS attacks followed against high-profile sites ...
... - Turned out they were being flooded with ICMP echo replies - Many DDoS attacks followed against high-profile sites ...
Effects on TCP of Routing Strategies in Satellite Constellations
... opening a new connection for TCP, to increase its throughput to what the link capacity will bear. After an errored packet is inferred as lost due to congestion, and the congestion window is reduced, the return to the previous high rate of throughput is slowed by the large RTT. In both cases, increas ...
... opening a new connection for TCP, to increase its throughput to what the link capacity will bear. After an errored packet is inferred as lost due to congestion, and the congestion window is reduced, the return to the previous high rate of throughput is slowed by the large RTT. In both cases, increas ...
Chapter 2
... order, an ACK must be issued immediately by rcvr for the last in-order segment Fast Retransmit rule: if 4 ACKs received for same segment, very likely it was lost, so retransmit immediately, rather than waiting for timeout Chapter 12 TCP Traffic Control ...
... order, an ACK must be issued immediately by rcvr for the last in-order segment Fast Retransmit rule: if 4 ACKs received for same segment, very likely it was lost, so retransmit immediately, rather than waiting for timeout Chapter 12 TCP Traffic Control ...
$doc.title
... DisseminaKng data Mobile, mulK-‐homed hosts SomeKmes-‐connected hosts Large number of hosts ...
... DisseminaKng data Mobile, mulK-‐homed hosts SomeKmes-‐connected hosts Large number of hosts ...
Internet History and Architectural Principles
... How long does it take to send a file of 640,000 bits from host A to host B over a circuit-switched network? All links are 1.536 Mbps Each link uses TDM with 24 slots/sec 500 msec to establish end-to-end circuit ...
... How long does it take to send a file of 640,000 bits from host A to host B over a circuit-switched network? All links are 1.536 Mbps Each link uses TDM with 24 slots/sec 500 msec to establish end-to-end circuit ...
Buffer-Sizing---CAIDA---May-2005 - McKeown Group
... TCP: Instead of sending packets when your receive ACKS send packets with a fixed rate of CWND/RTT. Rely on network properties: • Access links throttle the flows to low rate • Core:Acess > 1000:1 • TCP’s window size is limited today. ...
... TCP: Instead of sending packets when your receive ACKS send packets with a fixed rate of CWND/RTT. Rely on network properties: • Access links throttle the flows to low rate • Core:Acess > 1000:1 • TCP’s window size is limited today. ...
PIS106 ADVANCED COMPUTER NETWORKS Course Objective:
... Transport and Application Layer Protocols: Client-Server and Peer-To-Peer Application Communication, Protocols on the transport layer, reliable communication. Routing packets through a LAN and WAN. Transport Layer, Transmission Control Protocol (TCP), User Datagram Protocol (UDP), Mobile Transport P ...
... Transport and Application Layer Protocols: Client-Server and Peer-To-Peer Application Communication, Protocols on the transport layer, reliable communication. Routing packets through a LAN and WAN. Transport Layer, Transmission Control Protocol (TCP), User Datagram Protocol (UDP), Mobile Transport P ...
ppt
... > How to determine when to retransmit? Timeout? > Need local copies of contents of each packet. > How long to keep each copy? > What if an acknowledgement is lost? ...
... > How to determine when to retransmit? Timeout? > Need local copies of contents of each packet. > How long to keep each copy? > What if an acknowledgement is lost? ...
