Connecting To The Dual Ring; Direction Of Data Flow Through A Hub And Stations - 3Com 3C780 - LinkBuilder FDDI Base Unit User Manual

2-24 Installing the Hub
P
I
Figure 2-9. Direction of Data Flow Through a Hub and Stations
The acronyms used in Figure 2-9 are defined below and described in Chapter 3:

Connecting to the Dual Ring

To attach the hub to an FDDI dual ring, follow these steps:
1.
2.
S S P
O I O
A B
MAC
DAS
DAS Dual attachment station
DAC Dual attachment concentrator (hub)
SAS Single attachment station
Install a fiber module in slot 1 on the hub.
Insert two fiber-optic cables from the dual ring into the two leftmost
ports (B and A) of the fiber module.
The fiber-optic cables must terminate in MIC connectors.
P S S P
I O I O
A B
MAC
P P P P
M M
O I O I
DAC
P P P P
S S
I O I O
MAC MAC
SAS SAS