CP2022 - Lecture 2 Computer communications 1
... • In many networks individual channels are used by more than one communication – different applications – different users – different data /media types ...
... • In many networks individual channels are used by more than one communication – different applications – different users – different data /media types ...
FA21956961
... fixed delay and data leave the FDL in the same order in which they entered [1]. 1.3 Space Domain In deflection routing, a burst is sent to a different output link of the node and consequently on a different route towards its destination node. Space domain can be exploited differently in case several ...
... fixed delay and data leave the FDL in the same order in which they entered [1]. 1.3 Space Domain In deflection routing, a burst is sent to a different output link of the node and consequently on a different route towards its destination node. Space domain can be exploited differently in case several ...
Introduction
... If you use these slides (e.g., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!) If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our sl ...
... If you use these slides (e.g., in a class) in substantially unaltered form, that you mention their source (after all, we’d like people to use our book!) If you post any slides in substantially unaltered form on a www site, that you note that they are adapted from (or perhaps identical to) our sl ...
Operating Systems
... » designed for broadcast networks (original ALOHA network was radio based)! – difficult to detect collisions in a radio environment » therefore not possible to abort transmissions that collide » radios normally half-duplex : either transmit or receive – not both simultaneously » transmit power order ...
... » designed for broadcast networks (original ALOHA network was radio based)! – difficult to detect collisions in a radio environment » therefore not possible to abort transmissions that collide » radios normally half-duplex : either transmit or receive – not both simultaneously » transmit power order ...
The Network Management Problem
... Hosts do not forward IP packets—routers do. IP devices have routing tables. IP operates in conjunction with other protocols, such as OSPF, IS-IS, Border Gateway Protocol 4 (BGP4), and Internet Control Message Protocol (ICMP). Large IP networks can be structured as autonomous systems made up of small ...
... Hosts do not forward IP packets—routers do. IP devices have routing tables. IP operates in conjunction with other protocols, such as OSPF, IS-IS, Border Gateway Protocol 4 (BGP4), and Internet Control Message Protocol (ICMP). Large IP networks can be structured as autonomous systems made up of small ...
End to end and up and down
... End to end signalling • MAC layer doesn’t have the end to end picture • Lowest layer that can have end to end signalling is the network • Connections are established at network layer, with requirements pushed downwards into the MAC using SBM ...
... End to end signalling • MAC layer doesn’t have the end to end picture • Lowest layer that can have end to end signalling is the network • Connections are established at network layer, with requirements pushed downwards into the MAC using SBM ...
Networking
... been replaced by one in which a large number of separate but interconnected computers do the job. These systems are called computer networks. Two computers are said to be interconnected if they are able to exchange information’s. The connection need not be via a copper wire; fiber optics, microwaves ...
... been replaced by one in which a large number of separate but interconnected computers do the job. These systems are called computer networks. Two computers are said to be interconnected if they are able to exchange information’s. The connection need not be via a copper wire; fiber optics, microwaves ...
IEEE 802.11 architecture
... Station configured for IBSS operation will: “look” for Beacons that contain a network name (SSID) that matches the one that is configured When Beacons with matching Network Name are received and are issued by an AP, Station will associate to the AP When Beacons with matching Network Name are ...
... Station configured for IBSS operation will: “look” for Beacons that contain a network name (SSID) that matches the one that is configured When Beacons with matching Network Name are received and are issued by an AP, Station will associate to the AP When Beacons with matching Network Name are ...
One Decoding Step
... • DoS: sharp increase in flows and/or packets in one direction • Linear splines seem to be a good filter to distinguish DoS attacks ...
... • DoS: sharp increase in flows and/or packets in one direction • Linear splines seem to be a good filter to distinguish DoS attacks ...
Simple Wire Replacement
... workstations in search of parts. PM Nodes were installed at each operator station. The I/O from the Node was wired directly into a push button and light to allow the operator to send signals to the supervisor, and a PM Gateway allowed the supervisor to send signals back to the work station. ...
... workstations in search of parts. PM Nodes were installed at each operator station. The I/O from the Node was wired directly into a push button and light to allow the operator to send signals to the supervisor, and a PM Gateway allowed the supervisor to send signals back to the work station. ...
Assignment 4
... Assume that the S0 and S1 are part of the corporate network when you are answering the questions below. However, please also texually elaborate on the scenario where the link between S0 and S1 are not part of the corporate network and owned by another network operator (Internet Service Provider). 1. ...
... Assume that the S0 and S1 are part of the corporate network when you are answering the questions below. However, please also texually elaborate on the scenario where the link between S0 and S1 are not part of the corporate network and owned by another network operator (Internet Service Provider). 1. ...
Link Layer - Southern Adventist University
... • ATM, MPLS separate networks in their own right – different service models, addressing, routing from Internet ...
... • ATM, MPLS separate networks in their own right – different service models, addressing, routing from Internet ...
Network Devices
... • A network bridge connects multiple network segments at the data link layer (layer 2) of the OSI model. • Bridges are similar to repeaters or network hubs, devices that connect network segments at the physical layer • However a bridge works by using bridging where traffic from one network is manage ...
... • A network bridge connects multiple network segments at the data link layer (layer 2) of the OSI model. • Bridges are similar to repeaters or network hubs, devices that connect network segments at the physical layer • However a bridge works by using bridging where traffic from one network is manage ...
Chapter 1 Fundamentals
... 1.1 Requirements for computer networking 1.2 Underlying principles 1.3 The Internet architecture 1.4 Open source implementations 1.5 Book roadmap: a packet’s life 1.6 Summary ...
... 1.1 Requirements for computer networking 1.2 Underlying principles 1.3 The Internet architecture 1.4 Open source implementations 1.5 Book roadmap: a packet’s life 1.6 Summary ...
PPT - Pages
... – Some services not feasible • Latency or bandwidth guarantees • Need special support ...
... – Some services not feasible • Latency or bandwidth guarantees • Need special support ...
Communication Systems and Networks
... David B. Johnson. Routing in ad hoc networks of mobile hosts. In Proc. of the IEEE Workshop on Mobile Computing Systems and Applications, pages 158–163, December 1994. Charles Perkins, Elizabeth Royer, and Samir R. Das. Ad hoc On demand Distance Vecor (AODV) routing. Internet draft (work in progress ...
... David B. Johnson. Routing in ad hoc networks of mobile hosts. In Proc. of the IEEE Workshop on Mobile Computing Systems and Applications, pages 158–163, December 1994. Charles Perkins, Elizabeth Royer, and Samir R. Das. Ad hoc On demand Distance Vecor (AODV) routing. Internet draft (work in progress ...
A Framework to Support IP over WDM Using Optical Burst Switching *
... bandwidth to its fullest potential [5]. This necessitates the elimination of optics-electronics-optics conversion at the intermediate nodes in the end-to-end data path. Ideally, one would like to deploy an all-optical packet switch eliminating the electronics altogether. However, due to a number of ...
... bandwidth to its fullest potential [5]. This necessitates the elimination of optics-electronics-optics conversion at the intermediate nodes in the end-to-end data path. Ideally, one would like to deploy an all-optical packet switch eliminating the electronics altogether. However, due to a number of ...
Introduction - Faculty of Computer Science
... Network Core: Packet Switching each end-end data stream divided into packets user A, B packets share network resources each packet uses full link bandwidth resources used as needed Bandwidth division into “pieces” ...
... Network Core: Packet Switching each end-end data stream divided into packets user A, B packets share network resources each packet uses full link bandwidth resources used as needed Bandwidth division into “pieces” ...
Chapter 1 - EECS User Home Pages
... lost packet may be retransmitted by previous node, by source end system, or not at all ...
... lost packet may be retransmitted by previous node, by source end system, or not at all ...
