Competencies for ITNW 2413.doc
... Instructor: Carpenter, Barbara IITNW 2413 Networking Hardware After completion of this course, students should be able to do the following proficiently: • Define and install the necessary hardware required to communicate over a computer network • Demonstrate the mathematical skills required to work ...
... Instructor: Carpenter, Barbara IITNW 2413 Networking Hardware After completion of this course, students should be able to do the following proficiently: • Define and install the necessary hardware required to communicate over a computer network • Demonstrate the mathematical skills required to work ...
slides - network systems lab @ sfu
... A retransmission event indicates (to TCP sender) that the network is congested Congestion management is a function of the end-systems RFC 2581 requires TCP end-systems respond to congestion by reducing sending rate AIMD: Additive Increase Multiplicative Decrease TCP sender probes for avail ...
... A retransmission event indicates (to TCP sender) that the network is congested Congestion management is a function of the end-systems RFC 2581 requires TCP end-systems respond to congestion by reducing sending rate AIMD: Additive Increase Multiplicative Decrease TCP sender probes for avail ...
tcp - clear.rice.edu
... • Problem with Tahoe: If a segment is lost, there is a long wait until timeout • Reno adds a fast retransmit and fast recovery mechanisms • Upon receiving 3 duplicate ACKs, retransmit the presumed lost segment (“fast retransmit”) • But do not enter slow-start. Instead enter congestion avoidance (“fa ...
... • Problem with Tahoe: If a segment is lost, there is a long wait until timeout • Reno adds a fast retransmit and fast recovery mechanisms • Upon receiving 3 duplicate ACKs, retransmit the presumed lost segment (“fast retransmit”) • But do not enter slow-start. Instead enter congestion avoidance (“fa ...
Document
... TCP/IP Internetwork Protocol (IP) • IP is the transmission mechanism used by the TCP/IP protocols. It is an unreliable and connectionless datagram protocol- a best-effort delivery service. • The term best-effort mean that IP provides no error checking or tracking. • If reliability is important, IP ...
... TCP/IP Internetwork Protocol (IP) • IP is the transmission mechanism used by the TCP/IP protocols. It is an unreliable and connectionless datagram protocol- a best-effort delivery service. • The term best-effort mean that IP provides no error checking or tracking. • If reliability is important, IP ...
Does the IEEE 802.11 MAC Protocol Work Well in Multihop Wireless
... harmful in a multihop network and there is no scheme in IEEE 802.11 standard to deal with this problem. The binary exponential backoff scheme always favors the latest successful node. It will cause ...
... harmful in a multihop network and there is no scheme in IEEE 802.11 standard to deal with this problem. The binary exponential backoff scheme always favors the latest successful node. It will cause ...
Thoughts on TCP benchmarking
... • Part of global infrastructure UltraLight led by Harvey Newman ...
... • Part of global infrastructure UltraLight led by Harvey Newman ...
«Performance Analysis for a New Medium Access Control Protocol I
... • Provides reliability for each end host. • Retransmits the segments that had no ack signal response within RTO interval. • It controls new packets’ transmission, taking into consideration the amount of data, receiver’s buffering capabilities, network congestion and packet loss. • Including mechanis ...
... • Provides reliability for each end host. • Retransmits the segments that had no ack signal response within RTO interval. • It controls new packets’ transmission, taking into consideration the amount of data, receiver’s buffering capabilities, network congestion and packet loss. • Including mechanis ...
Wireless Ad-Hoc Networking (ELG7178F)
... what is the window size that should be set in order for the wind customer to access properly. Also find out the probable window size for the rogers customer? (Capacity(bits) = bandwidth (bits/sec) * round-trip time (sec)) Transport Layer in ad-hoc and sensor networks ...
... what is the window size that should be set in order for the wind customer to access properly. Also find out the probable window size for the rogers customer? (Capacity(bits) = bandwidth (bits/sec) * round-trip time (sec)) Transport Layer in ad-hoc and sensor networks ...
Introduction to Distributed Systems & Networking
... • Application-specific properties are best provided by the applications, not the network – Guaranteed, or ordered, packet delivery, duplicate suppression, security, etc. ...
... • Application-specific properties are best provided by the applications, not the network – Guaranteed, or ordered, packet delivery, duplicate suppression, security, etc. ...
IT 605 - IIT Bombay
... • Listen before you speak • Check whether the medium is active before sending a packet (i.e carrier s ...
... • Listen before you speak • Check whether the medium is active before sending a packet (i.e carrier s ...
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 ...
Chapter 26 PPT
... – Small design errors can result in incorrect operation, unnecessary packets, or delays – For example, if sequence numbers are used, each packet must contain a sequence number in the packet header – The field must be large enough so sequence numbers are not reused frequently, but small enough to avo ...
... – Small design errors can result in incorrect operation, unnecessary packets, or delays – For example, if sequence numbers are used, each packet must contain a sequence number in the packet header – The field must be large enough so sequence numbers are not reused frequently, but small enough to avo ...
Network Interface Card Specifications
... expanded access to TMS/LC2000 data via LAN/WAN Ethernet networks. Since the NIC supports communications across Gateways/Routers, WAN-users now have an extremely cost-effective alternative to dial-up connections for remote monitoring. With the addition of TMSCOMM Autopoll and WebServe software to the ...
... expanded access to TMS/LC2000 data via LAN/WAN Ethernet networks. Since the NIC supports communications across Gateways/Routers, WAN-users now have an extremely cost-effective alternative to dial-up connections for remote monitoring. With the addition of TMSCOMM Autopoll and WebServe software to the ...
l02network2
... Flow control — doesn’t send more packets than receiver is prepared to receive On receive side, receives packets, reassembles them into messages Computes a checksum for each packet and compares it to checksum sent, discards packet if checksums don’t agree Reorders out-of-order packets Relia ...
... Flow control — doesn’t send more packets than receiver is prepared to receive On receive side, receives packets, reassembles them into messages Computes a checksum for each packet and compares it to checksum sent, discards packet if checksums don’t agree Reorders out-of-order packets Relia ...
A crash course in networking
... – Even if the utility of groups available to be joined is very small on a pergroup basis, eventually the network effect of potential group membership can dominate the overall economics of the system ...
... – Even if the utility of groups available to be joined is very small on a pergroup basis, eventually the network effect of potential group membership can dominate the overall economics of the system ...
Basic Network Concepts
... UDP • UDP is an unreliable protocol that does not guarantee that packets will arrive at their destination or that they will arrive in the same order they were sent. ...
... UDP • UDP is an unreliable protocol that does not guarantee that packets will arrive at their destination or that they will arrive in the same order they were sent. ...
Lecture 1 - Department Of Computer Science
... Typically wait full RTT for connection setup before sending first data packet While the connection request contains the full address for destination, each data packet contains only a small identifier, making the per-packet header overhead small If a switch or a link in a connection fails, the connec ...
... Typically wait full RTT for connection setup before sending first data packet While the connection request contains the full address for destination, each data packet contains only a small identifier, making the per-packet header overhead small If a switch or a link in a connection fails, the connec ...
Lecture3_Networking_..
... Server listens on “open” ports Client sends request and connects to an “open” port on server To see which ports are in use on a windows/2000 or Unix system, you can use “netstat –na” Attackers often take an inventory of open ports on a system using various tools!!!! ...
... Server listens on “open” ports Client sends request and connects to an “open” port on server To see which ports are in use on a windows/2000 or Unix system, you can use “netstat –na” Attackers often take an inventory of open ports on a system using various tools!!!! ...
Document
... Stateful packet filtering • Allows for more complex policies based on current state of connections between two machines. – Let incoming UDP packets through only if they are responses to outgoing UDP packets you have seen. – Accept TCP packets with SYN set only as part of TCP connection initiation. ...
... Stateful packet filtering • Allows for more complex policies based on current state of connections between two machines. – Let incoming UDP packets through only if they are responses to outgoing UDP packets you have seen. – Accept TCP packets with SYN set only as part of TCP connection initiation. ...
Slides - University of Washington
... Three-Way Handshake (3) • Suppose delayed, duplicate copies of the SYN and ACK arrive at the server! ...
... Three-Way Handshake (3) • Suppose delayed, duplicate copies of the SYN and ACK arrive at the server! ...