Black Box KV6104SA-R2, Руководство пользователя

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CHAPTER 3: Installation
The typical cascade configuration is a logical “inverted tree” with one, two, or
three “layers” of subsidiary Duos/Quadros attached to a single master Duo/
Quadro. In this configuration, the users on the master Duo/Quadro can
independently access every CPU in the system by using a single switching pathway.
(If you want to mix Duos and Quadros in your system, and you want four users to
be able to reach all of the CPUs in your system that are attached to Quadros, you
need to arrange your cascade so that the master switch is a Quadro and that there
aren’t any Duos between the master Quadro and any subsidiary Quadros.) This
type of configuration is assumed in the rest of this section, but there are other
alternatives:
• You can use two master Duos/Quadros (to support more users than one
master unit could provide), but not all of the users on each master will be able
to reach all CPUs on all subsidiary Duos/Quadros at the same time.
• You can attach a user station to a subsidiary Duo/Quadro; if you do, not all of
the users on the master will be able to reach CPUs on that subsidiary Duo/
Quadro (or any “lower” Duos/Quadros connected to its CPU ports) at the
same time.
• You can create branches that merge at lower levels. This can provide useful
redundant pathways that can get around a Duo/Quadro chassis that might fail,
but configuring and maintaining your CPU-selection menu might be trickier
than normal.
• While it is theoretically possible to create loops, there is no good reason to do
this and we strongly recommend that you avoid it.
Here’s how to set up a standard “single master, single path” configuration. Make
sure that your master Duo/Quadro is powered down. If possible, turn off and
unplug all of the devices that you want to attach to the master. (If you have to “hot-
plug” any powered computers into the system, see
Section 5.8 .) Connect your local
user equipment to the master as described in Section 3.4.1 ; if you want to connect
a remote user station to the master, follow the instructions in Section 3.4.2 .
Next, connect each subsidiary Duo/Quadro to the master by running extension
cabling from the subsidiary Duo’s/Quadro’s user port(s) to the master’s CPU
ports:
• If you want all users on the master Duo/Quadro to have access to all CPUs in
the system, run cabling from all of the user ports on each subsidiary Duo/
Quadro to different,
consecutively numbered
CPU ports on the master. For
example, you could run four cables from a master Quadro to each of four
subsidiary Quadros: to one Quadro each from CPU ports 1 through 4,