Sun Microsystems Sun Fire E25K Service Manual page 155

domain_id is the letter A-R of the target domain(s) for the component.
OR
If the domain(s) were shut down prior to the expander replacement, start the
domain(s) with:
sc% setkeyswitch -d domain_id
on
Note – You might need to use setkeyswitch for more than one domain if the
expander is part of a split-slot domain.
2. Examine the POST messages reported by the addboard/setkeyswitch for any
errors. Also monitor the message logs on the SC, specifically
/var/opt/SUNWSMS/adm/platform/messages and
/var/opt/SUNWSMS/adm/domain_id/messages.
Chapter 12 System Expander Board Set 12-9