HP 200 Series Services And Applications page 250

Shining a Light on FDDI
Internetworking with HP Routers
Figure 9. FDDI Super-Server Configuration
A file server is a very good candidate for a standalone FDDI network. In a
standard configuration, a server would be connected directly to an Ethernet
segment. Traffic between segments would be very heavy, with traffic on the
server's segment being the heaviest. If servers were connected to the
HP Router BR as shown in figure 9, two benefits would be:
The traffic between segments would decrease draftically, effectively
increasing the bandwidth of the Ethernet internetwork.
Each server would have 100 Mbit/s bandwidth with which to serve
all incoming segments.
In general, a device can be connected to the HP Router BR either as a DAS,
creating a dual-attached ring, or as an SAS, creating a single-
attached ring.
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LAN 2
LAN 1
HP Router BR
Port A
Port B
PC Server
LAN 3
LAN 4
UNIX NFS
Server