[Become superuser on any node.]
[Enter the scsetup utility:]
# scsetup
Select Cluster interconnect>Disable a transport cable.
Answer the questions when prompted.
You will need the following information.
   You Will Need:         Example:
   node names             phys-schost-2
   adapter names          qfe1
   junction names         hub1
[Verify that the scconf command completed successfully:]
 
scconf -c -m endpoint=phys-schost-2:qfe1,state=disabled
 
Command completed successfully.
Quit the scsetup Cluster Interconnect Menu and Main Menu.
[Verify that the cable is disabled:]
# scconf -p | grep cable
  Transport cable:   phys-schost-2:qfe1@0 ethernet-1@2    Disabled
  Transport cable:   phys-schost-3:qfe0@1 ethernet-1@3    Enabled
  Transport cable:   phys-schost-1:qfe0@0 ethernet-1@1    Enabled