Black Box KV1700A/E, User Manual

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CHAPTER 3: INSTALLATION
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Figure 3-10. Cascaded Octet Switching System, Blocking Configuration
Figure 3-11 illustrates a cascaded Octet switching system with a combination of blocking
and non-blocking configurations. In this example, the primary switch supports eight users,
and eight user paths are connected to each secondary switch, creating a non-blocking
configuration. The target devices attached to the secondary tier will never be blocked and
can be accessed at any time. The secondary switches support eight users, but only four
user paths are attached to each tertiary switch, creating a blocking configuration. Thus
only four target devices on each tertiary switch can be connected to simultaneously, but
these four connections can be shared among eight users. Once a user closes a connection
to a target device on a tertiary switch, that user path is open and can be used to connect to
any target device in the switching system.
8 Octet User Stations
(KV1711 User Station Shown)
UTP Cabling
4 User Paths
Target Devices
Target Devices
User Ports
Octet Switch
(8 x 32, KV1701A/E Switch Shown)
Server Ports
User Ports Server Ports
Octet Switch
(4 x 16, KV1703A/E Switch Shown)
PRIMARY TIER
SECONDARY TIER
Non-blocking Configuration
Blocking Configuration