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Simulations that use traces generated by network traffic models usually examine a single node in the network, such as a router or switch; factors that depend on specific network topologies or routing information are specific to those topologies and simulations. [13] The problem of packet size distribution is fairly well-understood today.
If the sender has not received acknowledgement for the first packet it sent, it will stop and wait and if this wait exceeds a certain limit, it may even retransmit. This is how TCP achieves reliable data transmission. Even if there is no packet loss in the network, windowing can limit throughput. Because TCP transmits data up to the window size ...
A network packet is the fundamental building block for packet-switched networks. [15] When an item such as a file, e-mail message, voice or video stream is transmitted through the network, it is broken into chunks called packets that can be more efficiently moved through the network than one large block of data.
Nagle's algorithm works by combining a number of small outgoing messages and sending them all at once. Specifically, as long as there is a sent packet for which the sender has received no acknowledgment, the sender should keep buffering its output until it has a full packet's worth of output, thus allowing output to be sent all at once.
one single network packet (e.g. the payload lengths in IP and UDP headers) several network packets that belong to one single stream (e.g. the IP addresses) Redundant information is transmitted in the first packets only. The next packets contain variable information, e.g. identifiers or sequence numbers.
In an IP network, the path from the source address to the destination address may change in response to various events (load-balancing, congestion, outages, etc.) and this could result in the path MTU changing (sometimes repeatedly) during a transmission, which may introduce further packet drops before the host finds a new reliable MTU.
Time to live is a field that is decreased by one each time a packet goes through a network hop. If the field reaches zero, routing has failed, and the packet is discarded. [6] Ethernet packets have no time-to-live field and so are subject to broadcast storms in the presence of a switching loop. Length
The source and intermediate nodes in the network can combine and recombine the set of original and coded packets. The original packets form a block, usually called a generation. The number of original packets combined and recombined together is the generation size. The second parameter is the packet size.