IBM RS/6000 SP Handbook page 199

Because the SP Switch2 design improvements are evolutionary steps on the SP
and High Performance switches, the SP Switch2 is fully compatible with
applications written for the older switches. The SP Switch2 software support
continues to emphasize usage of MPI (Message Passing Interface), LAPI (Low
level Application Interface), and IP (Internet Protocol), but the new switch
subsystem enhances message handling so that the switch can keep pace with
the increased performance of the POWER3 SMP High Node. Because of this,
the SP Switch2 is currently only supported on those nodes.
Software enhancements
Several software component have been enhanced to support new functions
available with the SP Switch2 and SP Switch2 adapter including:
The Perspectives interface
Switch management
Software diagnostic
Perspectives
The Perspectives received the following updates:
System Notebook: Identification page shows the number of switch planes in use.
Switch Notebook:
Configuration Page:
– Switch name displays as SP_Switch2.
– Switch supervisor type define as 132.
Switch Notebook Status Page:
– Shows the status of the four switch power supplies.
– Shows the status of the four cooling fans.
Node Notebook
Status Page: Need to monitor switchResponds0. The switchResponds
attribute only applies to SP Switch (shows but does not apply to SP Switch2).
Configuration Page:
– Switch port number.
– Switch chip.
– Switch chip port are no longer displayed (moved to SP Adapter Page).
SP Adapter Page:
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Chapter 5. The Switch