9F426-02 Module Specific Information
8
•
SAC (Single Attached Concentrator) Station that accesses the main ring
through another concentrator and, in turn, allows the connection of more
devices. SACs provide the same connections as DACs, without attaching to the
dual ring.
•
NAC (Null Attached Concentrator) Isolated concentrator; concentrator not
connected to an FDDI ring.
While the map is updated, for example, during a ring topology change, the screen
may show ??-??-??-??-??-?? to illustrate an undetermined address.
To view details of a listed ring map address, use the arrow keys to highlight that
address and press the
Return
key. The Ring Map Node Screen (9F426-02 FDDI
Switch Module), Figure 4, appears.
Ring Map Screen Commands
RETURN
Closes the Ring Map Screen, and returns you to the FNB Configuration Menu.
SCROLL DOWN 1
Allows you to rotate the station addresses in the ring, one clockwise position.
SCROLL UP 1
Allows you to rotate the station addresses in the ring, one counterclockwise
position.
The Ring Map display stops at the first occurrence of an undetermined address,
and does not display any known information beyond this point.
NOTE
When the ring map contains only one station, the Scroll Up 1 and Scroll Down 1
commands do not appear.
NOTE
