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Module 10 presentation
Module 10 presentation

... • IP determines the most efficient route for data based on the routing protocol • The terms unreliable and best-effort do not imply that the system is unreliable and does not work well, but that IP does not verify that the data reached its destination. This function is handled by the upper layer pro ...
Ad-hoc On-Demand Distance Vector Routing (AODV) and
Ad-hoc On-Demand Distance Vector Routing (AODV) and

... reverse path routing entries from those nodes that do not lie on the path)  Route caching timeout (or the time after which the route is considered to be invalid)  Active route timeout (this information is maintained so that all active source nodes can be notified when a link breaks)  A neighbor i ...
Document
Document

... All routers calculate the best path to every destination Any link state changes are flooded across the network ...
William Stallings Data and Computer Communications
William Stallings Data and Computer Communications

... Within AS, router builds topology picture using IGP Router issues Update message to other routers outside AS using BGP These routers exchange info with other routers in other AS Routers must then decide best routes ...
William Stallings Data and Computer Communications
William Stallings Data and Computer Communications

... • Within AS, router builds topology picture using IGP • Router issues Update message to other routers outside AS using BGP • These routers exchange info with other routers in other AS • Routers must then decide best routes ...
Multi Node Label Routing Protocol
Multi Node Label Routing Protocol

Presentation 10
Presentation 10

... • 1 Mbps link; users require 0.1 Mbps when transmitting; users active only 10% of the time • Circuit switching: can support 10 users • Packet switching: with 35 users, probability that >=10 are transmitting at the same time ...
Integrated Telecommunication Networks I
Integrated Telecommunication Networks I

... bitrate of 25 Mbit/s and with a duration of 20ms. Define the value of the parameters of TB and LB in order to satisfy the SLA negotiated. Justify your answer. 5. A weighted fair queue (WFQ) algorithm is used on a router with five input lines (A, B, C, D and E) and an output line O. Assume that the w ...
Chapter 12
Chapter 12

... repeaters to a communication line that is configured as a closed loop • Often data is transmitted only in one direction on the ring • Point-to-point topology--each node is connected directly to another node ...
Umar Kalim`s Homepage
Umar Kalim`s Homepage

... Link (A,E) goes down. A periodic update kicks in and A advertises that its distance to E is infinity. At about the same time, B and C tell each other that they can reach E in 2 hops. B knows now that it can’t communicate with E via A, but concludes that it can send traffic to C which says it can rea ...
Overview
Overview

...  Provider ensures rest of Internet can reach customer ...
Document
Document

... 270ms. The satellite serves merely to retransmit data received from one station to another, with neglidgible switching delay. Using HDLC frames of 1024 bits with 3bit sequence numbers, what is the maximum possible data throughput (not counting the 48 overhead bits per frame)? b) In the figure below ...
Wireless Audio Conferencing System (WACS)
Wireless Audio Conferencing System (WACS)

... Why we used RTP?  TCP is not an appropriate choice for carrying real-time multimedia contents ...
Electric-field based
Electric-field based

... r(z) ≥ 0, z denotes a point (x,y) on the plane Rate of events inside α: ...
Modeling and Evaluation of Fibre Channel Storage Area Networks
Modeling and Evaluation of Fibre Channel Storage Area Networks

... servers and storage devices ...
Ad hoc on-demand Distance Vector Routing Protocol Based on Load Balance
Ad hoc on-demand Distance Vector Routing Protocol Based on Load Balance

... on-demand routing protocols such as ad hoc on-demand distance vector protocol (AODV) is the ...
WINE (IST-1999
WINE (IST-1999

... The destination node sends a Route Reply Message (RREP) back to the source node An intermediate node may send a RREP provided A that it knows a ‘fresh enough’ route to the destination Nodes maintain routing table entries only for active routes, unused routes are removed from the routing table after ...
Slides
Slides

... Stationary dist. of random walk is naturally biased towards supernodes Lookahead allows search to quickly discover content stored at all neighbors of these highdegree nodes ...
Discovery 2 module 06 quiz
Discovery 2 module 06 quiz

... d. imported from Flash memory on the router e. learned through address translation f. learned by NICs broadcasting their network number 3. Where does the router get information about the best path to send a packet destined for a host located on a remote network? a. from the IOS stored in Flash memor ...
PPP - Chakarov
PPP - Chakarov

... •The most common Network layer (Routed) protocol is IPv4 at the moment •Below is the layout of the protocol with the additional information which needs to be transferred with the data element ...
Connectivity
Connectivity

... dissimilar LANs and WANs running at different transmission speeds, using a variety of protocols • Routers are protocol-dependent • Routing protocols provide rules for communication between routers and help them determine the best path between two nodes • Gateways are combinations of networking hardw ...
IOSR Journal of Computer Science (IOSR-JCE) e-ISSN: 2278-0661, p-ISSN: 2278-8727 PP 42-45 www.iosrjournals.org
IOSR Journal of Computer Science (IOSR-JCE) e-ISSN: 2278-0661, p-ISSN: 2278-8727 PP 42-45 www.iosrjournals.org

... multiple fake identities will be created for adversary nodes, meaning that an attacker can appear to be in multiple places at the same time ...
Network Devices - York Technical College
Network Devices - York Technical College

... When network is installed and OSPF configured as the routing protocol, OSPF uses LSAs (Link State Advertisements) to collect information about the network and build a database of the entire topology. During the initial stage where it is learning the topology, the process causes a lot of activity on ...
L h
L h

... • No network info required • Packet sent by node to every neighbor • Incoming packets retransmitted on every link except incoming link • Eventually a number of copies will arrive at destination • Each packet is uniquely numbered so duplicates can be discarded • Nodes can remember packets already for ...
61765 Computer Networks I
61765 Computer Networks I

... This is an introductory course in computer networks and data communication methods. The TCP/IP layers are presented using a top-down approach, from the application to the physical layer. The course focuses on Internet protocols, with the addition of some application and line protocols. Lecturer Mr. ...
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Routing in delay-tolerant networking

Routing in delay-tolerant networking concerns itself with theability to transport, or route, data from a source to adestination, which is a fundamental ability all communication networks musthave. Delay- and disruption-tolerant networks(DTNs) are characterized by their lack of connectivity, resulting in a lack of instantaneous end-to-end paths. In these challenging environments, popular ad hoc routing protocols such as AODV and DSR fail to establish routes. This is due to these protocols trying to first establish a complete route and then, after the route has been established, forward the actual data. However, when instantaneous end-to-end paths are difficult or impossible to establish, routing protocols must take to a ""store and forward"" approach, where data isincrementally moved and stored throughout the network in hopes that it will eventually reach its destination. A common technique used tomaximize the probability of a message being successfully transferred is toreplicate many copies of the message in hopes that one will succeed inreaching its destination.
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