Traffic shaping - (also known as packet shaping ) is the control of computer network traffic in order to optimize or guarantee performance, lower latency, and/or increase usable bandwidth by delaying packets that meet certain criteria. Alternate SONET/SDH concatenation techniques are contiguous concatenation and arbitrary… … Wikipedia Virtual concatenation - (VCAT) is an inverse multiplexing technique used to split SONET/SDH bandwidth into logical groups, which may be transported or routed independently. Typical effects include queueing delay, packet loss or the blocking of new connections. Network congestion - In data networking and queueing theory, network congestion occurs when a link or node is carrying so much data that its quality of service deteriorates. Taxonomy of congestion control - refers to grouping congestion control algorithms according to their characteristics.Example classificationThe following is one possible classification according to the following properties: #The type and amount of feedback received from the… … Wikipedia The following list gives examples of Network Performance measures for a circuit… … Wikipedia It should not be seen merely as an attempt to get more through the network. Network performance - refers to the service quality of a telecommunications product as seen by the customer. ** HSTCP, FAST TCP, BIC TCP, CUBIC TCP, H-TCP, Compound TCP *Many TCP variants have been customized for large bandwidth-delay products * Server on a long-distance 1 Gbit/s link, average one-way delay 300 ms = 300 Mbit = 37.5 MB total required for buffering * High-speed terrestrial network: 100 Mbit/s, 100 ms: 10 Mbit = 1.25 MB * Customer on a DSL link, 1 Mbit/s, 200 ms one-way delay: 200 kbit = 25 kB
As defined in RFC 1072, a network is considered an LFN if its bandwidth-delay product is significantly larger than 10 5 bits (~12 kB). , Pittsburgh Supercomputing Center]Ī network with a large bandwidth-delay product is commonly known as a long fat network (shortened to LFN and often pronounced "elephant"). The product is particularly important for protocols such as TCP that guarantee reliable delivery, as it describes the amount of yet-unacknowledged data that the sender has to duplicate in a buffer memory in case the client requires it to re-transmit a garbled or lost packet. Obviously, the bandwidth-delay product is higher for faster circuits with long-delay links such as GEO satellite connections.
Sometimes it is calculated as the data link's capacity times its round trip time ]. data that have been transmitted but not yet received. The result, an amount of data measured in bits (or bytes), is equivalent to the amount of data "on the air" at any given time, i.e. In data communications, bandwidth-delay product refers to the product of a data link's capacity (in bits per second) and its end-to-end delay (in seconds).
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