Raritan Dominion KX2-832, Руководство пользователя

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Appendix D: FAQs
283
Ethernet and IP Networking
Does the Dominion KX II offer dual gigabit Ethernet ports to provide
redundant fail-over?
Yes. The Dominion KX II features dual gigabit Ethernet ports to provide
redundant failover capabilities. Should the primary Ethernet port (or the
switch/router to which it is connected) fail, the Dominion KX II will failover
to the secondary network port with the same IP address, ensuring that
server operations are not disrupted. Note that automatic failover must be
enabled by the administrator.
How is bandwidth used in KVM-over-IP systems?
The Dominion KX II offers next generation KVM-over-IP technology – the
very best video compression available. Raritan has received numerous
technical awards confirming its high video quality transmissions and the
low bandwidth utilization.
The Dominion KX II digitizes, compresses and encrypts the keyboard,
video, and mouse signals from the target server and transmits IP packets
over the IP network to the remote client to create the remote session to
the user. The Dominion KX II provides an at-the-rack experience based
on its industry leading video processing algorithms.
Screen changes, such as video, accounts for the majority of the
bandwidth used – keyboard and mouse activity is significantly less.
It is important to note that bandwidth is only used when the user is
active. The amount of bandwidth used is based on the amount of
change to the server’s video display screen.
If there are no changes to the video – the user is not interacting with the
server – there is generally no bandwidth used. If the user moves the
mouse or types a character, then there is a small amount of bandwidth
used. If the display is running a complex screen saver or playing a
video, then there can be a larger amount of bandwidth used.
How does bandwidth affect KVM-over-IP performance?
In general, there is a trade-off between bandwidth and performance.
The more bandwidth available, the better performance can be. In
limited bandwidth environments, performance can degrade. The
Dominion KX II has been optimized to provide strong performance in a
wide variety of environments.
What factors affect bandwidth?
There are many factors that determine how much bandwidth will be
used. The primary factor, as discussed previously, is the amount of
change in the target server’s video display. This is dependent on the
user’s task and actions.