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Appendix H. LAN and Switch Cable Installation and
Management Procedures
This section describes the procedures you must follow when installing administrative LAN and switch
cables. Failure to follow these procedures may damage network components. The objectives of these
procedures are to:
v Provide switch cables with continuous support and strain relief
v Minimize the possibility of pin damage to the SNI ports
v Form consistent cable groups that comply with EMC certification
v Maintain efficient cooling
Planning information for switch cable installation is detailed in "Appendix D. Cabling the pSeries HPS" of
the eServer Cluster 1600: pSeries High Performance Switch Planning, Installation, and Service Guide.
Cable Installation and Management
Procedure Concepts
In some configurations, cables that are not properly supported have damaged the associated connectors.
However, connector damage can be prevented by following the procedure described in this section. This
procedure must be used for installing I/O cables, administrative LAN cables, and switch cables in a M/T
7040-W42 frame. This procedure is written for a frame that is fully populated with pSeries 655 nodes. If
the frame you are installing is not fully populated, adjust this procedure as needed.
A high-level workflow for cable installation is as follows:
1. Install frame
2. Route all signal cables up through the tailgate
3. Separate cables into groups for nodes on the left side of the frame and for nodes on the right side of
the frame
Note: Switch cables must not be connected to SNIs or switch port connection cards until the weight
of each cable is fully supported.
4. Make certain that switch cable groupings do not interfere with PCI adapter slots
5. Make certain that the cable bend radius allows clearance for closing the rear door but is not so sharp
that it places excessive strain on the cable or the associated connectors
6. Cable the frame starting with the upper nodes and working down
7. Apply tailgate support for the cables from left to right
8. Figure 6 on page 170 shows a block diagram of a properly cabled tailgate
Cable Management Bracket
Figure 1 on page 162 shows the tailgate assembly (refer to "Cable management bracket and standard
frame extenders" in the Parts Catalog of the eServer Cluster 1600: pSeries High Performance Switch
Planning, Installation, and Service Guide for part numbers).
161
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