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Operation
The 9F116-01 provides connectivity between two of the three available interfaces:
the front panel and both FDDI rings on the FNB backplane (FNB-1 and FNB-2).
Bridging/routing can occur between any two interfaces, front panel to either FNB
ring or between the FNB rings (FNB-1 and FNB-2) as shown in Figure 3-1. The
factory default configuration is bridging/routing between the front panel and
FNB-1.
Converter
A
B
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 systems, or connect to
any ANSI FDDI-compliant device, through standard A/B port connections.
DC/DC
System
Diagnostic
Controller
i960 PLUS Core
Figure 3-1. 9F116-01 Block Diagram
SMB-1
SMB-10
FNB-1 and
FNB-2
Chapter 3
3-1
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