Additional Notes on VP-8 Network to GUI Connectivity
The VP-8 uses both TCP port 55890 and the first available UDP port in
the range of 60001 to 60010 during normal communications sessions
with the remote GUI software.
The TCP protocol is used for controlling the VP-8 and reporting its
control settings back to the GUI because that protocol works to repair
all transmission errors that might occur on the network. This ensures
that the VP-8’s controls will always do exactly what you tell them to do
and that the control settings you see on the GUI are in 100%
agreement with what the VP8 thinks they are.
Metering from the VP8 back to the GUI is a different story however.
For this we chose the UDP protocol, a simple data transmission model
without any hand-shaking to guarantee data reliability. UDP is used for
metering because of its low overhead at both ends of the link and
because we don’t mind if an occasional meter data packet (or a bunch
of meter packets) gets lost. Metering data is updated frequently so a
few missed metering packets have an inconsequential effect on the
visual appearance and no impact whatsoever on the sound.
What this means to an end user is that the VP8 expects to be able to
use TCP port 55890 and UDP ports in the range of 60001 to 60010 on
the portion of the network connecting the VP8 and the host PC running
GUI Lite.
The most common problem we see is UDP packets being blocked on
the host network. When this happens GUI Lite won’t be able to receive
metering data from the VP8. In this case you’ll notice that you’re
connected (GUI status is “Online”) and will even be able to control the
VP8. But you won’t see any meters working.
If this happens navigate to GUI Lite’s Configuration tab and check the
box labeled “Metering Data over TCP/IP”. Using TCP for metering will
increase network traffic because of the handshaking required and
metering might, depending on network congestion, appear a bit jerkier
than if UDP were being used.
Don’t forget to check the Windows Firewall settings if the VP8 GUI and
hardware can’t connect!!
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Summary of Contents for VP8 Plus
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