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Network Layer (4) - FSU Computer Science Department
Network Layer (4) - FSU Computer Science Department

... • Represents the network as a graph, and runs the shortest path algorithm to find the path to any router. • Divide the network into areas for scalability. – The backbone area is called area 0 – Within one area, a router has the same link state database as all other routers. Routers belonging to two ...
Graph Algorithms
Graph Algorithms

... Most distributed algorithms for shortest path are adaptations of Bellman-Ford algorithm. It computes single-source shortest paths in a weighted graphs. Designed for directed graphs. Computes shortest path if there are no cycle of negative weight. Let D(j) = shortest distance of node j from initiator ...
Hierarchical Path Metric in Multi-Hop Wireless Networks
Hierarchical Path Metric in Multi-Hop Wireless Networks

IOSR Journal of Computer Engineering (IOSR-JCE)
IOSR Journal of Computer Engineering (IOSR-JCE)

... community affiliations (i.e. institutional affiliation) that exist amongst the nodes. Consequently, nodes only need to maintain routing metrics on a per-class basis. The goal is to transfer the message to any node that belongs to the same class as that of the destination since members of the same cl ...
PPT Version
PPT Version

... • What problems do these discovery mechanisms solve? • Why should they be specified in the IETF? ...
Introduction to Wireless Ad
Introduction to Wireless Ad

... are gaining momentum. More analysis and features are needed (Performance comparison between protocols, QoS extension and analysis, multicast, security ...
Quiz on ICND chapter 3
Quiz on ICND chapter 3

... Name the seven layers of the OSI reference model, and describe their main purpose. a. b. ...
Directed Diffusion: A Scalable and Robust Communication
Directed Diffusion: A Scalable and Robust Communication

... Design and implementation of INS.  Location aware routing.  Geocasting in mobile ad hoc networks Location based multicast algorithms  Query localization techniques for ondemand routing protocols in ad-hoc net.  Declarative routing. ...
CSCI6268L10 - Computer Science
CSCI6268L10 - Computer Science

... – Open Shortest Path First, Link-State Protocol – These protocols assume “modest sized” networks – A routing protocol decides how to forward packets based on routing tables ...
CSCI6268L10 - Computer Science
CSCI6268L10 - Computer Science

... – Open Shortest Path First, Link-State Protocol – These protocols assume “modest sized” networks – A routing protocol decides how to forward packets based on routing tables ...
STUDY OF ROUTING PROTOCOLS IN MOBILE AD
STUDY OF ROUTING PROTOCOLS IN MOBILE AD

... connect the wireless network to the wired network. These bridges are called base stations. A mobile node within the network searches for the nearest base station (e.g. the one with the best signal strength), connects to it and communicates with it. The important fact is that all communication is tak ...
Document
Document

... Transfers data packets between computers in a specific network. In a WAN or an internetwork this involves the generation of a route passing through routers. In a single LAN, no routing is required. Responsible for transmission of packets between nodes that are directly connected by a physical link. ...
붙임 3 - CCRG
붙임 3 - CCRG

Week_Six
Week_Six

... A router running EIGRP stores all its neighbors' routing tables so that it can quickly adapt to alternate routes. If no appropriate route exists, EIGRP queries its neighbors to discover an alternate route. These queries propagate until an alternate route is found. ...
IOSR Journal of Computer Engineering (IOSR-JCE)
IOSR Journal of Computer Engineering (IOSR-JCE)

... Comparative Study of PEGASIS Protocols in Wireless Sensor Network ThePEGASIS-ANT[8] protocol uses ANT colony algorithm rather than greedy algorithm to construct the data chain. This helps to achieve global optimization. It forms the chain that makes the path more even-distributed and reduces the tr ...
Recursive or iterative routing? Hybrid!
Recursive or iterative routing? Hybrid!

... upcoming of Napster a lot of research has been done in this area. Still, growing demands like less data rate consumption, faster and more reliable search responses and the development of new applications engage many researchers worldwide. A fundamental problem that confronts peer-to-peer application ...
Network Layer
Network Layer

... • RIP had widespread use because it was distributed with BSD Unix in “routed”, a router management daemon. • RIP is the most used Distance Vector protocol. • RFC1058 in June 1988. • Sends packets every 30 seconds or faster. • Runs over UDP. • Metric = hop count • BIG problem is max. hop count =16  ...
Network Layer Routing
Network Layer Routing

... • RIP had widespread use because it was distributed with BSD Unix in “routed”, a router management daemon. • RIP is the most used Distance Vector protocol. • RFC1058 in June 1988. • Sends packets every 30 seconds or faster. • Runs over UDP. • Metric = hop count • BIG problem is max. hop count =16 ! ...
Network Layer
Network Layer

... • RIP had widespread use because it was distributed with BSD Unix in “routed”, a router management daemon. • RIP is the most used Distance Vector protocol. • RFC1058 in June 1988. • Sends packets every 30 seconds or faster. • Runs over UDP. • Metric = hop count • BIG problem is max. hop count =16  ...
Secure and Efficient Routing in Heterogeneous Mobile Ad hoc
Secure and Efficient Routing in Heterogeneous Mobile Ad hoc

COMPARATIVE STUDY OF TABLE DRIVEN ROUTING Mr. Pradip A. Chougule
COMPARATIVE STUDY OF TABLE DRIVEN ROUTING Mr. Pradip A. Chougule

... Comparative Study Of Table Driven routing protocols In Ad Hoc Wireless Networks 3.1.1. Normalized routing overhead: This is the number of routing packets transmitted per delivery of a data packet. Each hop transmission of a routing packet is counted as one transmission. This factor also tells us so ...
DTN Interworking for Future Internet
DTN Interworking for Future Internet

... favors in small transit time of a message reduce the amount of admin info propagated thru the network ...
Social Networks and Peer to Peer
Social Networks and Peer to Peer

...  Can avoid this by sending messages only to “trusted” nodes like people we know personally perhaps in a real life social context.  They propose to use existing social network services to build P2P Networks to add highly trusted links at little additional cost. ...
PowerPoint XP
PowerPoint XP

... Instead of sharing a common network medium, all nodes in the network can be connected directly to a router/switch ...
A Hybrid QoS Routing Strategy for Suburban Ad
A Hybrid QoS Routing Strategy for Suburban Ad

... Why Customized Routing for SAHN (2/2) Mobile IP (IPv6)  Uses proactive routing technique ideal for centralized networks  Whole network is flooded with link state information  Assumes direct link (single hop) between home/foreign agent and each host  Cannot not handle non-cooperating nodes ...
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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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