Managing Cables - IBM SAN384B Installation, Service And User Manual

|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|

Managing cables

|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
42
SAN384B Installation, Service, and User Guide
The ports are color-coded to indicate which can be used in the same port group for
trunking (trunking port groups can be up to eight ports). The ports and cables
used in trunking groups must meet specific requirements. Refer to the Fabric OS
Administrator's Guide for more information.
1. Position one of the optical transceivers so that the key is oriented correctly to
the port. Insert the transceiver into the port until it is firmly seated and the
latching mechanism clicks.
Transceivers are keyed so that they can only be inserted with the correct
orientation. If a transceiver does not slide in easily, ensure that it is correctly
oriented.
2. Position a cable so that the key (the ridge on one side of the cable connector) is
aligned with the slot in the transceiver; then, insert the cable into the
transceiver until the latching mechanism clicks.
Cables are keyed so that they can only be inserted with the correct orientation.
If a cable does not slide in easily, ensure that it is correctly oriented.
3. Repeat steps 1 and 2 for the remaining ports.
4. Organize the cables as required. For recommendations regarding cable
management, refer to "Managing cables."
5. Verify the chassis and port status using the switchShow command.
6. Verify fabric connectivity using the fabricShow command.
Attention: The minimum bend radius should be no smaller than 10x the cable
radius.
Note: Contact your IBM representative for options regarding different cable and
patch panel configurations to simplify cable management with higher
density FC8-64 port blades.
Cable management recommendations:
v Leave at least 1 m (3.28 ft) of slack for each port cable. This provides room to
remove and replace blades in the chassis, allows for inadvertent movement of
the rack, and helps prevent the cables from being bent to less than the minimum
bend radius.
v If ISL Trunking is in use, group the cables by trunking group. The ports are
color-coded to indicate which ports can be used in the same ISL Trunking group:
eight ports marked with solid black ovals alternate with eight ports marked with
oval outlines.
v Use only hook-and-loop fasteners for securing cables. Do not use cable ties. They
can be easily overtightened and can break the optical cables.
v For easier maintenance, label the fiber optic cables and record the devices to
which they are connected.
v Use the cable management fingers attached to the rack rails to organize the
cables off to the side of the chassis, and away from the chassis exhaust vents.
v Keep LEDs visible by routing port cables and other cables away from the LEDs.
For the procedure to install the ICL cables see "Removing and installing
inter-chassis link (ICL) cables" on page 84.