IBM 1PA, Руководство по эксплуатации, установке и обслуживанию

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Installing the 7299 Multiplexer
Important
Before installing the 7299, read the Safety Information booklet that was
provided with the product and Appendix B, “Notices” on page B-1.
Before you begin, review the information in “Connecting the Multiplexer to the Host”
on page 2-15 and “Connecting Devices to the Multiplexer” on page 2-17. Ensure
that you have the necessary cables and gender changers on hand.
Review Figure 2-1 on page 2-4. Make a copy of that worksheet and fill in the
blanks.
The numbers on the front of the 7299 are connector numbers.
Note: The connector number on the Host Multiplexer corresponds directly (1-to-1)
with the connector numbers on each Device Multiplexer (either Point-to-Point or
Ring).
The connector numbers may (or may not) correspond to the Port numbers
assigned by the WSC to which the Host Multiplexer is connected. If an entire 8-port
WSC is connected via the DB25 Direct Connect Cable or is wired 1-to-1 with a
Twinax Breakout Box (Box port 0 to Multiplexer port 0 and so on) the numbering of
the connectors will correspond directly to the WSC port numbering. If the two
channels (sides A and B) of the Host Multiplexer are connected to different WSC
four-port polling groups, the connector numbers may (or may not) correspond
directly to the WSC port numbering.
To install the 7299:
1. Set the “HOST/DEVICE” configuration switch on the rear of each Multiplexer
as follows:
Ÿ
One and only one Multiplexer is designated as the “Host Side Multiplexer”.
Set its switch to the “Host Side Multiplexer” (up) position.
Ÿ
All other Multiplexers on the same fiber optic cable should be set to the
“Device Side Multiplexer” position.
2. Set the “POINT-TO-POINT/RING MODE” configuration switch on the rear of
each Multiplexer. Set all switches on a given fiber optic connection the same
for each Multiplexer as follows:
Ÿ
If you are connecting only two Multiplexers in a point-to-point configuration,
set the switch to the “Point-to-Point (2 Muxes)” (up) position.
Ÿ
If you are connecting three or more Multiplexers, set the switch to the “Ring
Mode (3 or more Muxes)” (down) position.
3. Refer to “Connecting the Multiplexer to the Host” on page 2-15. Set the
jumpers inside the 7299 Host Multiplexer according to the connector used
and pinout used for your installation. Refer to “Changing the Multiplexer
Jumpers for Connector and Pinouts” on page 3-7.
4. Refer to “Connecting Devices to the Multiplexer” on page 2-17. Set the
jumpers inside the 7299 Device Multiplexer according to the connector used
and pinout used for your installation. Refer to “Changing the Multiplexer
Jumpers for Connector and Pinouts” on page 3-7. Ensure that you have the
required gender changer (P/N 05J4534) and twinax breakout box (P/N
21F5093) for a DB25 connection.
Chapter 3. Installing the 7299
3-5