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Operation
The MicroLAN Modules, as shown in Figure 3-1, provide concentrator ports that
connect directly to the FNB bus. Each port can connect to either ring (FNB-1 or
FNB-2). This is software configurable via local or remote management.
Fiber
port
.
.
.
.
.
.
.
Fiber
port
Flexible Network Bus (FNB)
The FNB consists of two dual FDDI networks, FNB-1 and FNB-2, providing up to
400 Mbps of data bandwidth. These FDDI networks are 100% ANSI FDDI-
compliant supporting SMT (version 7.3), MAC, PHY, and PMD standards. This
allows the FNB to traverse multiple SmartSwitch 9000 hubs, or connect to any
ANSI FDDI-compliant device, through standard A/B port connections.
DC/DC
System
Converter
Diagnostic
Controller
i960 PLUS Core
Figure 3-1. Block Diagram
Chapter 3
SMB-1
SMB-10
FNB-1 or
FNB-2
3-1
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