slides - Fei Hu
... – encapsulate datagram into frame, adding header, trailer – ‘physical addresses’ used in frame headers to identify source, dest • different from IP address! ...
... – encapsulate datagram into frame, adding header, trailer – ‘physical addresses’ used in frame headers to identify source, dest • different from IP address! ...
Solution to test 2
... Assume the followings: All routers inside the network turn off the support for subnet-directed and all-subnet-directed IP broadcasts, i.e., drop those packets. All nodes (hosts and routers) must reply with an ICMP echo reply message when receiving an ICMP echo request message. When forwarding ...
... Assume the followings: All routers inside the network turn off the support for subnet-directed and all-subnet-directed IP broadcasts, i.e., drop those packets. All nodes (hosts and routers) must reply with an ICMP echo reply message when receiving an ICMP echo request message. When forwarding ...
A Simple and Efficient MAC-Routing Integrated Algorithm for Sensor
... for Sensor Network R. Rugin and G. Mazzini University of Ferrara, via Saragat 1, 44100 Ferrara, Italy ...
... for Sensor Network R. Rugin and G. Mazzini University of Ferrara, via Saragat 1, 44100 Ferrara, Italy ...
Connectivity - King Fahd University of Petroleum and Minerals
... Link layer needed if the link is shared bet’n apps; is unreliable; and is used sporadically No need for protocol concepts like addressing, names, routers, hubs, forwarding, filtering … What if I want to build a network with N nodes and let N increase ? ...
... Link layer needed if the link is shared bet’n apps; is unreliable; and is used sporadically No need for protocol concepts like addressing, names, routers, hubs, forwarding, filtering … What if I want to build a network with N nodes and let N increase ? ...
The Network Layer
... A basic idea is to allocate the remaining class C networks (more than 2 million, and later A and B) in variable sized blocks of 254 addresses, a site needing 8000 addresses then gets 32 contiguous class C networks. The world was divided up into 4 zones to easy hierarchical routing. A site outside Eu ...
... A basic idea is to allocate the remaining class C networks (more than 2 million, and later A and B) in variable sized blocks of 254 addresses, a site needing 8000 addresses then gets 32 contiguous class C networks. The world was divided up into 4 zones to easy hierarchical routing. A site outside Eu ...
Network-Coding Multicast Networks With QoS Guarantees
... admits not more than a specified amount of traffic, the network will never experience link congestion. • For multicast networks, the main problem with this approach is low throughput. ...
... admits not more than a specified amount of traffic, the network will never experience link congestion. • For multicast networks, the main problem with this approach is low throughput. ...
DK_February_2008_Koblenz - delab-auth
... The cache discovery protocol (2/2) When a mediator receives a request, searches its cache • If it deduces that the request can be satisfied by a neighboring node (remote cache hit), forwards the request to the neighboring node with the largest residual energy • If the request can not be satisfied b ...
... The cache discovery protocol (2/2) When a mediator receives a request, searches its cache • If it deduces that the request can be satisfied by a neighboring node (remote cache hit), forwards the request to the neighboring node with the largest residual energy • If the request can not be satisfied b ...
Routing Protocols
... There exists at least one path from every node to the destination All cycles not containing the destination have nonnegative length (cost). ...
... There exists at least one path from every node to the destination All cycles not containing the destination have nonnegative length (cost). ...
... where vehicles are equipped with wireless and form a network without help of any infrastructure. The equipment is placed inside vehicles as well as on the road for providing access to other vehicles in order to form a network and communicate. Intelligent Vehicular Ad-Hoc Networks ( InVANET’s) - Vehi ...
Sullivan - Oregon State University
... – routers use routing rules to forward packets to the next appropriate destination – hubs forward all packets on all connected wires – switches keep track of which computer is on each line and send packets only to the desired destination ...
... – routers use routing rules to forward packets to the next appropriate destination – hubs forward all packets on all connected wires – switches keep track of which computer is on each line and send packets only to the desired destination ...
Document
... • Number of sensor nodes can be several orders of magnitude higher • Sensor nodes are densely deployed and are prone to failures • The topology of a sensor network changes very frequently due to node mobility and node failure • May leverage broadcasting than point-to-point communications • May opera ...
... • Number of sensor nodes can be several orders of magnitude higher • Sensor nodes are densely deployed and are prone to failures • The topology of a sensor network changes very frequently due to node mobility and node failure • May leverage broadcasting than point-to-point communications • May opera ...
Computer Systems and Networks
... terminator on each end. Ring: Similar to bus, but bus is closed - no ends. Star: A central node does most of the processing. Remote nodes are connected point-to-point with it. Loop: Similar to ring but nodes are directly in communication path. Hierarchical: A tree-like structure emanating from a cen ...
... terminator on each end. Ring: Similar to bus, but bus is closed - no ends. Star: A central node does most of the processing. Remote nodes are connected point-to-point with it. Loop: Similar to ring but nodes are directly in communication path. Hierarchical: A tree-like structure emanating from a cen ...
Routing
... Nodes flood their state onto the link to all other nodes At start, new nodes downlink the database from a neighbour Different kinds of link ...
... Nodes flood their state onto the link to all other nodes At start, new nodes downlink the database from a neighbour Different kinds of link ...
CSC 335 Data Communications and Networking I
... Level C - 90% of traffic < 50ms latency Level D - 95% in profile traffic delivered Level E - allotted twice bandwidth of level F traffic ...
... Level C - 90% of traffic < 50ms latency Level D - 95% in profile traffic delivered Level E - allotted twice bandwidth of level F traffic ...
Chapter One
... Switches Subdivide a network into smaller logical pieces Create multiple, smaller collision domains In a half duplex switched network there are only two devices in each collision domain. In a full-duplex switched environment there is only 1 device in each collision domain (0 % chance of collision) ...
... Switches Subdivide a network into smaller logical pieces Create multiple, smaller collision domains In a half duplex switched network there are only two devices in each collision domain. In a full-duplex switched environment there is only 1 device in each collision domain (0 % chance of collision) ...
514-25-Wrap
... • Route target – tag routes for import/export • Route distinguisher – distinguish routes of separate customers – A customer’s address space may overlap with another’s, without interfering – E.g. private addresses ...
... • Route target – tag routes for import/export • Route distinguisher – distinguish routes of separate customers – A customer’s address space may overlap with another’s, without interfering – E.g. private addresses ...
Rich_characteristics_v3_GGF7
... Achievable Bandwidth (Input from GGF6): The maximum amount of data per time unit that a link or path can provide to an application, given the current utilization, the protocol and operating system used, and the end-host performance capability. The aim of this characteristic is to indicate what ...
... Achievable Bandwidth (Input from GGF6): The maximum amount of data per time unit that a link or path can provide to an application, given the current utilization, the protocol and operating system used, and the end-host performance capability. The aim of this characteristic is to indicate what ...
Maximum query latency Network traffic per query
... Assumes all vehicles have active RFID tag planted in tires Number of hierarchies could be up to the same as number of nodes A node could have many next-insider pointers, query routing would be similar to that of Gnutella How to solve query routing for the vehicle that is not exist, could lea ...
... Assumes all vehicles have active RFID tag planted in tires Number of hierarchies could be up to the same as number of nodes A node could have many next-insider pointers, query routing would be similar to that of Gnutella How to solve query routing for the vehicle that is not exist, could lea ...
Lec 1
... • Routers send packets on best path to the destination. This is necessary for path redundancy • Because they operate at layer 3 they are inherently slower than bridges but more complex technologies are compensating – Route on IP addresses can use different paths • They maintain separate network segm ...
... • Routers send packets on best path to the destination. This is necessary for path redundancy • Because they operate at layer 3 they are inherently slower than bridges but more complex technologies are compensating – Route on IP addresses can use different paths • They maintain separate network segm ...