Raritan Engineering KX2-832 用户手册

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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.