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投影片 1
投影片 1

... destination vehicle as long as one exists. • Currently, our protocol is designed for IVC networks formed by a few vehicles moving on the same lane. ...
Routing
Routing

... Has a pool of public IP addresses to choose from More for getting out rather than getting in Translates the private IP to one of the public IPs & awaits a response After session is closed, the public IP is returned to the pool of public addresses ...
chapter5
chapter5

... A hop counter is initialized by the sender to the maximum path length (in hops) and is decremented in each router. Any packet is destroyed, if its hop counter reaches 0. A time stamp is initialized by the sender to the expected transfer time of the packet. Any packet is destroyed, if its delay is gr ...
MULTI-PROTOCOL LABEL SWITCHING
MULTI-PROTOCOL LABEL SWITCHING

... by the LSP is specified in advance. The path specified could be optimal or not, but is based on the overall view of the network topology and, potentially, on additional constraints. ...
CCNA2 Module 9
CCNA2 Module 9

... This command displays the contents of the IP routing table. The output from the show ip route command shows the entries for all known networks and subnetworks, and how that information was learned M. Menelaou ...
Optical Interconnects
Optical Interconnects

... different output. They are used as demultiplexers to separate the individual wavelengths or as multiplexers to combine them. ◦ Wavelength Selective Switch (WSS): A WSS is typical an 1xN optical component than can partition the incoming set of wavelengths to different ports (each wavelength can be as ...
Here is the Power Point Presentation on Chord
Here is the Power Point Presentation on Chord

... Dabek, Hari Balakrishnan, Chord: A Scalable Peer-topeer Lookup Protocol for Internet Applications. To Appear in IEEE/ACM Transactions on Networking ...
FJ2110091012
FJ2110091012

... Step 2: When data transmission is required from a source to a particular destination, source node broadcasts a Route Request (RREQ) for that destination. Intermediate nodes creates a route to source, when a RREQ is received. If the receiving node has not received this RREQ before, is not the destina ...
Chapter 5 - Indiana State University
Chapter 5 - Indiana State University

... After that time expires, the IP address lease expires and someone else can use that IP address At C> prompt, type ipconfig /all to see IP address lease information. (In ...
CER04-slide
CER04-slide

... runs above link and MAC layer below routing layer is not a routing or data dissemination protocol decides which nodes should join the routing infrastructure Nodes become active or passive independent of routing protocol Does not use state gathered by the routing protocol Does not require changing th ...
Chapter 20-22
Chapter 20-22

...  Algorithms used to determine the shortest path between two nodes according to some cost condition.  The shortest path is the path with the least cost (the sum of the cost of the links on the path is minimum over all possible paths between the source and destination)  Two main algorithms to find ...
Network Layer
Network Layer

... Diffusing Update ALgorithm (DUAL) Somewhat like hold down, but routers are alerted of broken paths. Complex. Not popular. ...
Document
Document

... – Similarities: Both systems map names to values. – Differences: DNS has root servers; Chord has no special servers. – Similarities: decentralized, symmetric, and automatically adapts when hosts join and leave. – Differences: Chord queries always result in success or definitive failure and is more s ...
Network - CISIVY
Network - CISIVY

... • a data packet is passed in one direction from node to node to a local buffer on the destination node • a packet will continue to move through the ring & returns to the source then removed from the ring • several variations with more flexibility but at a ...
Brief Announcement: A Conjecture on
Brief Announcement: A Conjecture on

... We begin by noting that a trace set only reveals the distance between nodes along one path (the path of the trace). But this is disproportionately important for a tree network, where there is exactly one path between any two nodes; the algorithm to trace a tree network identifies the nodes using the ...
PWave: A Multi-source Multi-sink Anycast Routing
PWave: A Multi-source Multi-sink Anycast Routing

Study of the Relationship between Peer to Peer Systems and IP
Study of the Relationship between Peer to Peer Systems and IP

... Hybrid P2P system: has a central sever with a set of indexes , and each peer asks it during the discovery phase Pure P2P system : lack a central server ...
1404CT Lec4
1404CT Lec4

...  Best path is selected by a routing protocol based on the value or metric it uses to determine the distance to reach a network.  A metric is the value used to measure the distance to a given network.  Best path to a network is the path with the lowest metric.  Dynamic routing protocols use their ...
PPT
PPT

... • A message usually contains a header, indicating what kind of information it contains, and some data. • What the message “means,” i.e., how to interpret the bytes in the message, is an agreement between the two communicating parties (the protocol). ...
Technology Directions for IP Infrastructure
Technology Directions for IP Infrastructure

... an agent of the caller rather than the reciever – ENUM technology to use the DNS to map an E.164 number to a URL service location – Use the DNS to map the URL service location to an IP address of the service point ...
Network Layer (3)
Network Layer (3)

... Node lookup in p2p networks • P2P networks may have a very large number of nodes, such that a single central server may not be able to handle. • Besides, there are legal issues. • So, how to design lookup mechanism, such that I can find the node providing the service I need? • For simplicity, let’s ...
IOSR Journal of Computer Science (IOSR-JCE) e-ISSN: 2278-0661, p-ISSN: 2278-8727 PP 58-65 www.iosrjournals.org
IOSR Journal of Computer Science (IOSR-JCE) e-ISSN: 2278-0661, p-ISSN: 2278-8727 PP 58-65 www.iosrjournals.org

... Geographic routing protocols are becoming an attractive choice for use in mobile adhoc networks. The underlying principle used in these protocols involves selecting the next routing hop from amongst a node’s neighbors, which is geographically closest to the destination. Since the forwarding decision ...
ppt
ppt

... OSPF (Open Shortest Path First)  “open”: publicly available ...
The Network Layer
The Network Layer

... IN response – Source addr, destination addr and Hop Count copied but Dest seq number taken from its counter Hopcount is set to 0, Lifetime field controls how long the route is valid. At each intermediate node 1.No route to I is known, 2.Sequence number of I in the ROUTE REPLY packet is greater than ...
Introduction
Introduction

... – switches ...
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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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