Chapter 4: Subsystem Connection and Operation
Subsystem Connection and Operation
4-7
Figure 4-2: FC ports and Corresponding Controllers
NOTE:
Auto speed detection will determine FC speed by port 0; therefore it is
important to first connect port 0. It is requested to set the same speed in the
same Fibre loop environment.
The right LED above each FC port will light up when the subsystem is
properly connected to host(s) and the FC-AL loop has been established.
When the LED is off indicates the FC-AL loop has not yet been established.
4.3.2 DIP Switch 5/6: CH0 & CH1 Auto/4G/2G/1G Speed Selection
Speed auto-detection is a specified feature of the Fibre Channel standard. If
one of the devices in the FC-AL loop is set to an auto setting, it will detect
the available device and run at that speed. On the other hand, when you set
the speed to 4G or other selection, the FC-AL loop will run at that speed.
DIP ID
Setting
CH0/CH1 Speed
DIP5 Up; DIP6 Up (Default)
Auto
DIP5 Up; DIP6 Down
4G
DIP5 Down; DIP6 Up
2G
DIP5 Down; DIP6 Down
1G
Table 4-2: DIP Switch 5/6 Definition
NOTE:
The FC-AL loop speed can be adjusted by the following items:
1.
DIP switch on the subsystem
2.
Termination program
3.
HBA card on the host computer
Be sure to adjust all three items mentioned above for the FC-AL loop to run
in a new speed.
