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Upstream (networking)

In computer networking, upstream refers to the direction in which data can be transferred from the client to the server (uploading). This differs greatly from downstream not only in theory and usage, but also in that upstream speeds are usually at a premium.[1] Whereas downstream speed is important to the average home user for purposes of downloading content, uploads are used mainly for web server applications and similar processes where the sending of data is critical. Upstream speeds are also important to users of peer-to-peer software.

Residential services often have higher downstream rates than upstream, while business services are often symmetric.

ADSL and cable modems are asymmetric, with the upstream data rate much lower than that of its downstream. Symmetric connections such as Symmetric Digital Subscriber Line (SDSL) and T1, however, offer identical upstream and downstream rates.

If a node A on the Internet is closer (fewer hops away) to the Internet backbone than a node B, then A is said to be upstream of B or conversely, B is downstream of A. Related to this is the idea of upstream providers. An upstream provider is usually a large ISP that provides Internet access to a local ISP. Hence, the word upstream also refers to the data connection between two ISPs.

See also

References

  1. ^ Prince, Matthew (2013-12-03), Lessons from Surviving a 300Gbps Denial of Service Attack, archived from the original on 2021-12-15, retrieved 2018-07-07


upstream, networking, computer, networking, upstream, refers, direction, which, data, transferred, from, client, server, uploading, this, differs, greatly, from, downstream, only, theory, usage, also, that, upstream, speeds, usually, premium, whereas, downstre. In computer networking upstream refers to the direction in which data can be transferred from the client to the server uploading This differs greatly from downstream not only in theory and usage but also in that upstream speeds are usually at a premium 1 Whereas downstream speed is important to the average home user for purposes of downloading content uploads are used mainly for web server applications and similar processes where the sending of data is critical Upstream speeds are also important to users of peer to peer software Residential services often have higher downstream rates than upstream while business services are often symmetric ADSL and cable modems are asymmetric with the upstream data rate much lower than that of its downstream Symmetric connections such as Symmetric Digital Subscriber Line SDSL and T1 however offer identical upstream and downstream rates If a node A on the Internet is closer fewer hops away to the Internet backbone than a node B then A is said to be upstream of B or conversely B is downstream of A Related to this is the idea of upstream providers An upstream provider is usually a large ISP that provides Internet access to a local ISP Hence the word upstream also refers to the data connection between two ISPs See also EditUpstream server Return channelReferences Edit Prince Matthew 2013 12 03 Lessons from Surviving a 300Gbps Denial of Service Attack archived from the original on 2021 12 15 retrieved 2018 07 07 upstream at the Free On line Dictionary of Computing This article related to telecommunications is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Upstream networking amp oldid 1060503415, wikipedia, wiki, book, books, library,

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