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APPENDIX B: FREQUENTLY ASKED QUESTIONS 55
Ethernet Networking
QUESTION ANSWER
How much bandwidth does
Dominion KX require?
Dominion KX offers integrated 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 Mbit/s
Move Cursor Around Desktop 0.18Mbit/s
Move Static 400x600
Window/Dialog Box
0.35Mbit/s
Navigate Start Menu 0.49Mbit/s
Scroll an Entire Page of Text 1.23Mbit/s
Run 3D Maze Screensaver 1.55Mbit/s
What is the slowest
connection (lowest
bandwidth) over which
Dominion KX can operate?
The slowest connection is 20kbits per second (a slow dial-up modem).
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.
Can Dominion KX used
over the WAN (Internet),
or just over the corporate
LAN?
Yes. Whether via a fast corporate LAN, the less predictable WAN
(Internet), a cable modem, or dial-up modem, Dominion KX’s KVM
Over IP technology can accommodate your connection. Raritan’s IP-
Reach KVM Over IP technology is integrated into every Dominion KX
unit. Raritan pioneered configurable video compression technology,
leading the industry by years, as evidenced by its awards.