IBM RS/6000 SP, Maintenance Information

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MAP 0540: Switch Function
045 (continued)
– If this is a switch-to-switch connection, have customer update the switch configuration file appro-
priately (to show wrap plugs) before continuing:
Ÿ For code levels 1.00 - 1.01, modify the /etc/SP/expected.top on the primary node.
Ÿ
For code level 1.02 and higher, use the Etopology command.
– Make sure processor node(s) that were put in “Service” mode are returned to “Normal” mode.
Make sure all processor node(s) are IPLed completely.
– Have customer verify that the switch code is running on all processor nodes.
– From the control workstation of the “primary” processor node, type Estart followed by ENTER.
– Check /var/adm/SPlogs/css/out.top file for problems regarding the jack(s) indicated.
Does out.top file show a problem on any jack(s) indicated?
Yes No
046
– If this is a switch-to-switch connection, remove both wrap plugs from the switch assem-
blies. Replace the frame-to-frame switch data cable that was disconnected before.
– Go to Step 101 on page 1-350 to verify the fix.
047
Problem is in the switch assembly which is still reporting a problem.
– Go to Step 093 on page 1-349 to service or replace the switch assembly.
048
Possible problem caused by clocking or grounding between frames.
– Continue with Step 049
049
Problem reported with all switch data cables from one or more frames. This may be caused by a clocking
or grounding problem between frames.
Note: The “master-clock” switch indicates the switch which is supplying the master clock for the
system—the master clock will have the clock input multiplexor set to “internal clock” (0). A
“problem” switch indicates any switch which is experiencing problems.
– Check the switch clock selections on the “problem” switch(es). Reference "Selecting Appropriate Switch
Clocks" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service Procedures for
more information.
Do the clock settings on the “problem” switch assemblies appear to be okay?
Yes No
050
– Change the clock selections on the appropriate switch(es). Reference "Selecting Appropriate
Switch Clocks" in IBM RS/6000 SP: Maintenance Information, Volume 3, Locations and Service
Procedures for more information.
– Go to Step 101 on page 1-350 to verify fix.
051
(Step 051 continues)
Chapter 1. Maintenance Analysis Procedures (MAPs)
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