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NDI was designed to work on good quality [[Gigabit Ethernet|gigabit local area networks]] using TCP and Bonjour ([[Multicast DNS|mDNS]]) technologies. In order to work across subnets that don't pass mDNS, NDI supports a mechanism known as NDI Access which allows manual entry of the [[IP address]] of machines on other subnets which may be running NDI sources.
Some NDI adopters have run the protocol across [[Fiber-optic communication|fibre]] connections up to 15 km, although NDI's use of the TCP protocol makes it less suitable for long-distance, high-latency connections due to factors such as [[bandwidth-delay product]] and [[Transmission Control Protocol|TCP packet loss recovery]].<ref>{{cite web|url=http://westreamu.se/2016/05/09/documentary-stockholm-kista-cross-production-using-ndi-over-fiber/|title=Documentary: Stockholm Kista cross production using NDI over fiber|first=Richard|last=Gatarski|date=9 May 2016|website=Weststreamu.se}}</ref> Later versions of NDI introduced different transport protocols including UDP, MultiTCP and reliable UDP (QUIC) which offer different network characteristics. NDI|HX uses a lower data rate making it easier to use in bandwidth-limited connections.
==Use in cloud-based infrastructure==
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