PPT
... version 1.2.3 of GloMoSim as FAMA is no longer included in newer versions of GloMoSim.) You can also use ns2 which is more up-to-date. Evaluate the performance of FAMA and IEEE 802.11 MAC in fully-connected networks, networks with an access point (AP) and multi-hop networks. See how collision avoida ...
... version 1.2.3 of GloMoSim as FAMA is no longer included in newer versions of GloMoSim.) You can also use ns2 which is more up-to-date. Evaluate the performance of FAMA and IEEE 802.11 MAC in fully-connected networks, networks with an access point (AP) and multi-hop networks. See how collision avoida ...
PPT - web.iiit.ac.in
... Multi-computers, such as the hypercube (ref. parallel computing) In terms of (operating) systems, there is some distinction between network systems and distributed systems Distributed system gives the view of a single computer to the user (user not aware of networking behind scenes) Failure of a ...
... Multi-computers, such as the hypercube (ref. parallel computing) In terms of (operating) systems, there is some distinction between network systems and distributed systems Distributed system gives the view of a single computer to the user (user not aware of networking behind scenes) Failure of a ...
Lecture 8: Routing I Distance-vector Algorithms
... Hosts sets up path out-of-band, requires connection setup Write (input id, output id, next hop) into each router on path Flexible (one path per flow) Send packet with path id Router looks up input, swaps for output, forwards on next hop Repeat until reach destination Table lookup for forwarding (fas ...
... Hosts sets up path out-of-band, requires connection setup Write (input id, output id, next hop) into each router on path Flexible (one path per flow) Send packet with path id Router looks up input, swaps for output, forwards on next hop Repeat until reach destination Table lookup for forwarding (fas ...
Lecture 9 - web page for staff
... Consider thermal noise power = 4kTB k = Boltmann’s constant = 1.38 x 10-23 J/K T = absolute temperature ...
... Consider thermal noise power = 4kTB k = Boltmann’s constant = 1.38 x 10-23 J/K T = absolute temperature ...
Document
... Router sets link distance to infinity & floods the network with an update packet All routers immediately update their link database & recalculate their shortest paths Recovery very quick But watch out for old update messages Add time stamp or sequence # to each update message Check whether ...
... Router sets link distance to infinity & floods the network with an update packet All routers immediately update their link database & recalculate their shortest paths Recovery very quick But watch out for old update messages Add time stamp or sequence # to each update message Check whether ...
Slides in Powerpoint
... 2. If a leader exists, stop and bootstrap with the leader; 3. Otherwise, elects a leader (bully algorithm); 4. If is leader, increase channel ID & TTL, goto 1. ...
... 2. If a leader exists, stop and bootstrap with the leader; 3. Otherwise, elects a leader (bully algorithm); 4. If is leader, increase channel ID & TTL, goto 1. ...
Introduction
... Data networks use packet switching instead of circuit switching, the method traditionally used in the telephone system. Packet switching was first invented in the 1960s as a method for building a survivable communications system in a battlefield ...
... Data networks use packet switching instead of circuit switching, the method traditionally used in the telephone system. Packet switching was first invented in the 1960s as a method for building a survivable communications system in a battlefield ...
SECURITY TECHNIQUE COMBINED WITH CONGESTION
... the network. Some of the techniques are explained below: ...
... the network. Some of the techniques are explained below: ...
EEE449 Computer Networks
... • 1000BASE-SX: This short-wavelength option supports duplex links of up to 275 m using 62.5-µm multimode or up to 550 m using 50-µm multimode fiber. Wavelengths are in the range of 770 to 860 nm. • • 1000BASE-LX: This long-wavelength option supports duplex links of up to 550 m of 62.5-µm or 50-µm mu ...
... • 1000BASE-SX: This short-wavelength option supports duplex links of up to 275 m using 62.5-µm multimode or up to 550 m using 50-µm multimode fiber. Wavelengths are in the range of 770 to 860 nm. • • 1000BASE-LX: This long-wavelength option supports duplex links of up to 550 m of 62.5-µm or 50-µm mu ...
Part I: Introduction
... them in IP-IP packets, and it sends them to the Foreign Agent. Encapsulated packets are addressed to 18.86.0.253. 4. The Foreign Agent decapsulates the IP-IP packets, and it sends them out on the Foreign Subnet. These packets will be addressed to 169.229.2.98. ...
... them in IP-IP packets, and it sends them to the Foreign Agent. Encapsulated packets are addressed to 18.86.0.253. 4. The Foreign Agent decapsulates the IP-IP packets, and it sends them out on the Foreign Subnet. These packets will be addressed to 169.229.2.98. ...
ATM
... we learned how to do this already (chapter 3)! seldom used on low bit-error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer ...
... we learned how to do this already (chapter 3)! seldom used on low bit-error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer ...
CSE 422 Computer Networks - Computer Science and Engineering
... • Possible uses: portable office, fleets of trucks, taxis, buses, and repairpersons (keeping in contact with home) ...
... • Possible uses: portable office, fleets of trucks, taxis, buses, and repairpersons (keeping in contact with home) ...
Routing Information Protocol (RIP)
... becomes invalid, the router does not immediately purge that route from its table • Instead, it continues to advertise the route with a metric value of 16 • At the same time, the garbage collection timer is set to 120 s for that route • When the count reaches zero, the route is purged from the table ...
... becomes invalid, the router does not immediately purge that route from its table • Instead, it continues to advertise the route with a metric value of 16 • At the same time, the garbage collection timer is set to 120 s for that route • When the count reaches zero, the route is purged from the table ...
PPT
... Decentralization: chord is fully distributed, no node more important than other, improves robustness Scalability: logarithmic growth of lookup costs with number of nodes in network, even very large systems are feasible Availability: chord automatically adjusts its internal tables to ensure tha ...
... Decentralization: chord is fully distributed, no node more important than other, improves robustness Scalability: logarithmic growth of lookup costs with number of nodes in network, even very large systems are feasible Availability: chord automatically adjusts its internal tables to ensure tha ...
RS-232 Communications
... RS-232 hardware samples the line multiple times during a single bit transmission. If the samples do not all have the same voltage, a framing error occurs. A framing error should only occur if one device is sending faster than the other device is set to receive. An intentional frame error can be caus ...
... RS-232 hardware samples the line multiple times during a single bit transmission. If the samples do not all have the same voltage, a framing error occurs. A framing error should only occur if one device is sending faster than the other device is set to receive. An intentional frame error can be caus ...
356961: Internet Protocols
... Datalink refers to the 2nd layer in the ISO/OSI reference model Category 5 unshielded twisted pair cable is better than category 3 cable. Finding path from one node to another in a large network is a transport layer function. It is impossible to send 3000 bits/second through a wire w ...
... Datalink refers to the 2nd layer in the ISO/OSI reference model Category 5 unshielded twisted pair cable is better than category 3 cable. Finding path from one node to another in a large network is a transport layer function. It is impossible to send 3000 bits/second through a wire w ...
Chapter 5
... Adds control and data information plus the destination node’s address (the token is now a data frame) The token is then passed to the next node Once received by the destination, an acknowledgment is sent to the originating node After the originating node receives the acknowledgement, it releases a n ...
... Adds control and data information plus the destination node’s address (the token is now a data frame) The token is then passed to the next node Once received by the destination, an acknowledgment is sent to the originating node After the originating node receives the acknowledgement, it releases a n ...
Document
... whether there are other devices sending a carrier at the same time If the medium is in use, the station does not send, but waits until the medium is free When the medium becomes free it will start its frame on the medium ...
... whether there are other devices sending a carrier at the same time If the medium is in use, the station does not send, but waits until the medium is free When the medium becomes free it will start its frame on the medium ...
Slides
... we learned how to do this already (chapter 3)! seldom used on low bit error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer 5a-32 ...
... we learned how to do this already (chapter 3)! seldom used on low bit error link (fiber, some twisted pair) wireless links: high error rates • Q: why both link-level and end-end reliability? 5: DataLink Layer 5a-32 ...
«Performance Analysis for a New Medium Access Control Protocol I
... • 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 mechanisms that allow multiple transmission before ...
... • 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 mechanisms that allow multiple transmission before ...