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Fast EtherHub 3500 System User’s Guide
Setting Up Network Connections 3-7
Isolating Specific Hub Connections
You can interconnect or isolate the hubs in a stack using a
multi-segment configuration. In a stacked system, some hubs
may be connected to a segment while others are isolated (not
attached to any segment). In this example, hubs 1 and 2 are
attached to segment 1, while hubs 3 and 4 are attached to
segment 2. However, hubs 5 and 6 are not connected to any
segment. These hubs form isolated segments. With careful
planning, you can restrict access for specific user groups to
required connections only.
EtherHub3500 AGENT
EtherHub3500 HUB
MANAGEMENT
CHANNEL
SEG. LINK 1
SEG. LINK 2
SEG. LINK 3
EtherHub3500 HUB
EtherHub3500 HUB
EtherHub3500 HUB
EtherHub3500 HUB
ID 1
ID 2
ID 3
ID 4
ID 5
ID 6
SEGMENT 1
SEGMENT 2
SEGMENT 1
SEGMENT 2
ISOLATED
ISOLATED
FlexBus 3500 Cable
Figure 3-3 Linking Part of the Stacked Hubs to a Segment
F
When hubs are isolated, they cannot communicate with any other
device in the stack via the FlexBus.