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Dominion KX 1.4
Frequently asked questions 3/9
Questions Answers
My modem connection
dropped and I got the error
message “There was an
unexpected communications
error – connection
terminated” – what should
I do?
This might happen based the frequency with which you try to connect via
modem. Reboot the KX unit and modem, and for future connections, wait
at least two (2) minutes between attempts.
Ethernet and IP Networking
How much bandwidth does
Dominion KX require?
Dominion KX offers a 3
rd
generation IP-Reach
®
technology – the very
best video compression available. Raritan has received numerous
technical awards confirming its high video quality transmissions and the
low bandwidth utilization.
Raritan pioneered the KVM Over IP functionality that allows users to
tailor their video parameters to conserve network bandwidth. For
instance, when connecting to Dominion KX through a dial-up modem
connection, video transmissions can be scaled to grayscale – allowing
you to be fully productive while ensuring high performance.
With that in mind, the following data refers to Dominion KX at its default
video settings – again, these settings can be tailored to your
environment. They can be increased to provide even higher quality video
(color depth), or decreased to optimize for low-speed connections.
As a general rule, a conservative estimate for bandwidth utilization (at
Dominion KX’s default settings) is approximately 0.5Mbit/seconds per
active KVM user (connected to and using a server), with very occasional
spikes up to 2MBit/seconds. This is a very conservative estimate
because bandwidth utilization will typically be even lower.
Bandwidth required by each video transmission depends on what task is
being performed on the managed server. The more the screen changes,
the more bandwidth is utilized. The table below summarizes some use
cases and the required bandwidth utilization at Dominion KX’s default
settings on a 10Mbit/s network:
Idle Windows Desktop 0 Mbps
Move Cursor Around Desktop 0.18Mbps
Move Static 400x600 Window/Dialog Box 0.35Mbps
Navigate Start Menu 0.49Mbps
Scroll an Entire Page of Text 1.23Mbps
Run 3D Maze Screensaver 1.55Mbps
What is the slowest
connection (lowest
bandwidth) over which
Dominion KX can operate?
33Kbps or above is recommended for acceptable KX performance
over a modem connection.
What is the speed of
Dominion KX’s
Ethernet interfaces?
Dominion KX offers two 10/100 speed Ethernet interfaces, with
configurable speed and duplex settings (either auto-detected or manually
set). Dominion KX does not require a gigabit Ethernet interface because
its output (see above question) would never even come close to
exceeding the 100Mbit/sec limit of 10/100 Ethernet networking.
Can I access Dominion KX
over a wireless connection?
Yes. Dominion KX not only utilizes standard Ethernet, but also uses very
conservative bandwidth with very high quality video. Thus, if you have a
wireless client with network connectivity to Dominion KX, you can
configure and manage your servers at BIOS-level wirelessly.