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Table of Contents
13 Networking
Fallstricke
TCP TIME-WAIT
Why Do I Get Error 60 When Closing and Opening a TCP Connection on the Same Local Port?
Siehe http://digital.ni.com/public.nsf/allkb/119D334B8B78732E862574E1006D1839
NI Discovery Protocol
Discovery of networked National Instruments devices (targets) by other devices (hosts) requires bi-directional communication between host and target. By default, National Instruments devices do not have communication restrictions. However, devices that are not produced by National Instruments may use firewall software as a security measure to restrict communication. National Instruments network device discovery requires access to the following ports.
| Port | Protocol | Description |
|---|---|---|
| 5353 | UDP | Discovery of devices using the multicast Domain Name System (mDNS) protocol |
| 44515 | UDP | Discovery of legacy devices in safe-mode when a routable IP address is not known |
| 44516 | TCP | Discovery of legacy devices in safe-mode when a routable IP address is known |
| 44525 | UDP | Discovery of legacy devices in run-mode |
Siehe http://digital.ni.com/public.nsf/$CXIV/ATTACH-AEEE-9Y9P55/$FILE/Network%20Ports%20Used%20for%20Device%20Discovery.pdf