Cabletron Systems Ethernet Hubs, Руководство пользователя

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9030367 E7 Configuration Views
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Hub Redundancy Management
Figure 4-2. Redundantly Connected Hub Device
The following example illustrates redundancy between hubs.
Say that you have used redundant circuit management to create a connection
between the Accounting Department and the Payroll Department of your
company. These departments are on the same floor and have two repeaters
between them on an Ethernet network. Suppose a system overload occurred
IRB
S
ON
ST
RC
DN
CR
PO
ON
RH
NK
DN
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NS LK
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ETHE
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MT8
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IRB
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RH
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NS LK
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ETHE
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M
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L L R R
MT8
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Primary Hub Device
Secondary Hub Device
Primary Active Circuit
Backup Inactive Circuit