Evaluating the impact of RTS-CTS in OLPC`s XOs` Mesh Networks
... ran these tests with iperf generating TCP and UDP traffic and also with the nodes downloading a file through SCP. However, throughput measurements are more representative when we evaluate UDP traffic instead of TCP. TCP has a lot of inherent features like slow start and flow control that inhibits ne ...
... ran these tests with iperf generating TCP and UDP traffic and also with the nodes downloading a file through SCP. However, throughput measurements are more representative when we evaluate UDP traffic instead of TCP. TCP has a lot of inherent features like slow start and flow control that inhibits ne ...
UNIT 19 (CAN)
... • Full-CAN devices provide the whole hardware for convenient acceptance filtering and message management. For each message to be transmitted or received these devices contain one so called message object in which all information regarding the message (e.g. identifier, data bytes etc.) are stored. D ...
... • Full-CAN devices provide the whole hardware for convenient acceptance filtering and message management. For each message to be transmitted or received these devices contain one so called message object in which all information regarding the message (e.g. identifier, data bytes etc.) are stored. D ...
The Interplanetary Internet Implemented on a Terrestrial testbed
... Delay Tolerant Networking (DTN) is viewed as an overlay network on top of such regional planetary networks. It incorporates a new protocol layer called as the bundle layer on top of heterogeneous region specific lower layers. The NASA Jet Propulsion Laboratory (JPL), has developed the Interplanetary ...
... Delay Tolerant Networking (DTN) is viewed as an overlay network on top of such regional planetary networks. It incorporates a new protocol layer called as the bundle layer on top of heterogeneous region specific lower layers. The NASA Jet Propulsion Laboratory (JPL), has developed the Interplanetary ...
Controller Area Network (CAN)
... For real-time control over a network it may be advisable to implement a communication protocol that guarantees that messages meet timing deadlines regardless of the load on the bus. One such protocol that retains the CAN data link layer protocol is “time-triggered CAN,” or TTCAN (ISO 11898-4) [7]. A ...
... For real-time control over a network it may be advisable to implement a communication protocol that guarantees that messages meet timing deadlines regardless of the load on the bus. One such protocol that retains the CAN data link layer protocol is “time-triggered CAN,” or TTCAN (ISO 11898-4) [7]. A ...
Node 1 `s Topology Table
... • When router joins network, it builds routing table, using information from neighbors. • If more than one possible path exists to a network, router chooses path with best feasible distances • If serial link goes down, router must find a new route to destination network ...
... • When router joins network, it builds routing table, using information from neighbors. • If more than one possible path exists to a network, router chooses path with best feasible distances • If serial link goes down, router must find a new route to destination network ...
Autonomic Wireless Sensor Networks: Intelligent Ubiquitous
... –We address nodes either –solely based on their TZ –using the short address provided by the Zigbee address procedure –We inject a sleeping scheduling table to coordinate FDDs’ activitiy ...
... –We address nodes either –solely based on their TZ –using the short address provided by the Zigbee address procedure –We inject a sleeping scheduling table to coordinate FDDs’ activitiy ...
link-mac - Zoo
... while (network busy) wait; wait for 96 bit-time after detecting no signal; transmit and detect collision; if detect collision stop and transmit a 48-bit jam signal; n ++; m:= min(n, 10), where n is the number of collisions choose K randomly from {0, 1, 2, …, 2m-1}. if n < 16 goto repeat else give up ...
... while (network busy) wait; wait for 96 bit-time after detecting no signal; transmit and detect collision; if detect collision stop and transmit a 48-bit jam signal; n ++; m:= min(n, 10), where n is the number of collisions choose K randomly from {0, 1, 2, …, 2m-1}. if n < 16 goto repeat else give up ...
Week_Nine_Net_Design_ppt
... • A network problem in which packets continue to be routed in an endless circle • It is caused by a router or line failure, and the notification of the downed link has not yet reached all the other routers • It can also occur over time due to normal growth or when networks are merged together • Rout ...
... • A network problem in which packets continue to be routed in an endless circle • It is caused by a router or line failure, and the notification of the downed link has not yet reached all the other routers • It can also occur over time due to normal growth or when networks are merged together • Rout ...
Network layer (IP)
... neighbor, it updates its own DV using B-F equation: Dx(y) ← minv{c(x,v) + Dv(y)} ...
... neighbor, it updates its own DV using B-F equation: Dx(y) ← minv{c(x,v) + Dv(y)} ...
CCNA2 3.0-08 TCPIP Suite Error and Control Messages
... Unlike error messages, control messages are not the results of lost packets or error conditions which occur during packet transmission. Instead, they are used to inform hosts of conditions such as network congestion or the existence of a better gateway. Some examples of control messages are: 0 = ech ...
... Unlike error messages, control messages are not the results of lost packets or error conditions which occur during packet transmission. Instead, they are used to inform hosts of conditions such as network congestion or the existence of a better gateway. Some examples of control messages are: 0 = ech ...
Slide 1
... Security: if set, packet should avoid doubtful routes; not heeded Strict source routing; defeats corrupt routing tables; allows route timing measurements Loose source routing; route must include specified routers. For routing round enemies Record route; when routing thought to be incorrect Timestamp ...
... Security: if set, packet should avoid doubtful routes; not heeded Strict source routing; defeats corrupt routing tables; allows route timing measurements Loose source routing; route must include specified routers. For routing round enemies Record route; when routing thought to be incorrect Timestamp ...
old_Ch3
... not have any other network devices on it except for the router at the other end. Because of the way the internet has grown, most ASs don’t have a single network ID. They generally have several. This means that the gateways have to have many subnet masks, each one associated with every net ID in its ...
... not have any other network devices on it except for the router at the other end. Because of the way the internet has grown, most ASs don’t have a single network ID. They generally have several. This means that the gateways have to have many subnet masks, each one associated with every net ID in its ...
Week_Nine
... (hardware errors, software errors, configuration errors, intermittent errors in communications links, unreliable connections, etc.) within the network which cause certain reach ability information to be repeatedly advertised and withdrawn. ...
... (hardware errors, software errors, configuration errors, intermittent errors in communications links, unreliable connections, etc.) within the network which cause certain reach ability information to be repeatedly advertised and withdrawn. ...
Week_Nine
... (hardware errors, software errors, configuration errors, intermittent errors in communications links, unreliable connections, etc.) within the network which cause certain reach ability information to be repeatedly advertised and withdrawn. ...
... (hardware errors, software errors, configuration errors, intermittent errors in communications links, unreliable connections, etc.) within the network which cause certain reach ability information to be repeatedly advertised and withdrawn. ...
Left Focus Test Slide
... Separate for inbound and outbound traffic for each interface SPD entry specifies: drop bypass IPsec (protocols & algorithms) Traffic characterized by selectors: source/destination IP addresses (also bit masks & ranges) next protocol source/destination ports User or system ID (mus ...
... Separate for inbound and outbound traffic for each interface SPD entry specifies: drop bypass IPsec (protocols & algorithms) Traffic characterized by selectors: source/destination IP addresses (also bit masks & ranges) next protocol source/destination ports User or system ID (mus ...
revision class 1, 21/4/2016
... bandwidth equally between contending nodes. – COPE allows the bottleneck nodes to XOR pairs of packets and drain them quicker, increasing the throughput of the network. – For topologies with a single bottleneck, the Coding + MAC Gain is the ratio if the bottleneck’s draining rate with COPE to it’s d ...
... bandwidth equally between contending nodes. – COPE allows the bottleneck nodes to XOR pairs of packets and drain them quicker, increasing the throughput of the network. – For topologies with a single bottleneck, the Coding + MAC Gain is the ratio if the bottleneck’s draining rate with COPE to it’s d ...
AG31238244
... but also as a router that maintains routes to and forwards data for the other nodes in the networks that may not be within wireless transmission range. Routing in the mobile ad hoc networks faces challenges due to mobility of the nodes a large number of nodes, and communication between nodes resourc ...
... but also as a router that maintains routes to and forwards data for the other nodes in the networks that may not be within wireless transmission range. Routing in the mobile ad hoc networks faces challenges due to mobility of the nodes a large number of nodes, and communication between nodes resourc ...
ans - EECS: www-inst.eecs.berkeley.edu
... 1e) [6 points] Consider the following network, with nodes A through J. The numbers indicate the link weights or costs (so shortest paths are paths with the lowest cumulative cost). In the following ...
... 1e) [6 points] Consider the following network, with nodes A through J. The numbers indicate the link weights or costs (so shortest paths are paths with the lowest cumulative cost). In the following ...
part 2 - Computer Science Division
... identify, study common architectural components, protocol mechanisms what approaches do we find in network architectures? synthesis: big picture ...
... identify, study common architectural components, protocol mechanisms what approaches do we find in network architectures? synthesis: big picture ...
lecture9 - Academic Csuohio
... – iterative process of computation, exchange of info with neighbors – “distance vector” algorithms ...
... – iterative process of computation, exchange of info with neighbors – “distance vector” algorithms ...
intrusion detection system for manet
... will integrate this technology are police and fire vehicles to communicate with each other for safety purposes. Internet Based Mobile Ad-hoc Networks (iMANET): Internet Based Mobile Ad-hoc Networks are ad-hoc networks that link mobile nodes and fixed Internet-gateway nodes. In such type of networks ...
... will integrate this technology are police and fire vehicles to communicate with each other for safety purposes. Internet Based Mobile Ad-hoc Networks (iMANET): Internet Based Mobile Ad-hoc Networks are ad-hoc networks that link mobile nodes and fixed Internet-gateway nodes. In such type of networks ...
ppt - Applied Crypto Group at Stanford University
... Routing Table Update Protocols Interior Gateway Protocols: IGPs ...
... Routing Table Update Protocols Interior Gateway Protocols: IGPs ...
chord_last
... Step 2:Update the fingers and predecessors of existing nodes to reflect the addition of n Node n will become the ith finger of a node p iff 1. p precedes n by at least 2i-1 and 2. the ith finger of node p succeeds n (see e.g.) Finding and updating these nodes takes O(log2N) but can be reduced to O( ...
... Step 2:Update the fingers and predecessors of existing nodes to reflect the addition of n Node n will become the ith finger of a node p iff 1. p precedes n by at least 2i-1 and 2. the ith finger of node p succeeds n (see e.g.) Finding and updating these nodes takes O(log2N) but can be reduced to O( ...
A Network
... • Types Services – Voice (Telecom) or Data (Data Network- Internet)! • According to Physical Medium – Wireless, Wired Network • Future Trend seems to be all as ONE network, i.e., Data-Network. As there will be no discrimination between bits of voice, video & computational data. IIIT-B ...
... • Types Services – Voice (Telecom) or Data (Data Network- Internet)! • According to Physical Medium – Wireless, Wired Network • Future Trend seems to be all as ONE network, i.e., Data-Network. As there will be no discrimination between bits of voice, video & computational data. IIIT-B ...
ICAIT8082
... separate clusters. Clustering can be used as analysis about node, pattern reorganization, and supervised learning. Any cluster should exhibit two main properties low inter-class similarity and high intraclass. [7] Node analysis is concerned with predictive modeling: given some training data, we want ...
... separate clusters. Clustering can be used as analysis about node, pattern reorganization, and supervised learning. Any cluster should exhibit two main properties low inter-class similarity and high intraclass. [7] Node analysis is concerned with predictive modeling: given some training data, we want ...