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MATRIX SERVSWITCH™
3.4.2 T
OPOLOGIES
IMPORTANT NOTE
A standard Matrix ServSwitch system can support two independent
users, but each of the user stations has to be attached to a different-
numbered KVM port (one to KVM 1, the other to KVM 2), even if the
stations are attached to different Switches. If you have users on stations
attached to same-numbered ports (both on KVM 1, for instance), the
users will share a video bus. Refer to Section 5.3.
Figure 3-3 below and Figure 3-4 on the following page show the two main
topologies (patterns) in which you can interconnect Matrix ServSwitches: bus and
ring. (The arrows in the figures indicate video-signal directions from output to
input.) Which of these topologies you use will depend on where your users are, as
explained in the following paragraphs.
Figure 3-3. The bus topology.
Use a bus arrangement if all of your users are on a Switch at the end of the chain.
In this topology, the OUT ports of all Switches except the first one are attached to
the IN ports of the previous Switch in the chain. (The first Switch is the end of the
video-signal path, where the user-station monitors are.) The bus topology is also
useful if your users are on different Switches but you want to restrict a user’s access
to certain CPUs. For example, if a user were on Unit 2 in Figure 3-3, they would
only be able to switch to CPUs on Units 2 and 3; they would not be able to switch to
CPUs on Unit 1.
Unit 3:
CPUs 33 to 48
Cable runs from OUT on
Unit 3 to IN on Unit 2
Cable runs from OUT on
Unit 2 to IN on Unit 1
User B (KVM 2)
User A (KVM 1)
Unit 2:
CPUs 17 to 32
Unit 1:
CPUs 1 to 16
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