Installation Manual

Single-Attach Station (SAS)
This configuration avoids the need for an optical bypass switch (page 1-
19) because the FDDI concentrator provides the isolation of the router
from the dual ring (to prevent ring wrap) if the router’s FDDI circuit be-
comes non-operational.
1. Attach the concentrator to the FDDI ring.
2. Attach either port ‘‘A’’ or port ‘‘B’’ to any ‘‘M’’ port on the FDDI
concentrator.
......
FDDI Concentrator
Connect either ‘‘A’’ or
‘‘B’’ to any ‘‘M’’ port on
the concentrator
HP router with an
FDDI port
Figure D-2. Example of Single-Attach Station Connections
FDDI Cable Attachment Configurations
Single-Attach Station (SAS)
D-4