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==Use in Wi-Fi and wide area networks==
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 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.
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