IBM Switch 9077 - Manual (Page 173)

Configuration of IP-Forwarding Media Cards 155
4.6.13 Bridging FDDI
Transparent bridging is especially useful for day-to-day customer
environments, where several FDDI backbones meet in the computing center
and must be connected to an SP. Up to now, the SP was connected to the
FDDI switch or router with one or two FDDI adapters, thus causing a
bottleneck.
Now, with the GRF connecting directly to the SP Switch, the FDDI backbones
can deliver their data at maximum speed. See Section 5.1.4.2, “SP Switch -
FDDI Connection with Bridging” on page 179 for the setup.
4.6.14 Bridging Ethernet
What was discussed for FDDI applies to 100 Mbit/s Ethernet backbones,
also.
We provide no scenario or setup for this case.