Technical data

If the current topology for an adapter is LOOP, set an individual adapter to
FABRIC by using the item number for that adapter (for example, 0 or 1).
Use 9999 to set all adapters:
P00>>> wwidmgr -set adapter -item 9999 -topo fabric
Reformatting nvram
Reformatting nvram
______________________ Note _______________________
The qualifier in the previous command is -topo and not
-topology. You will get an error if you use -topology.
Displaying the adapter information again will show the topology that the
adapters will assume after the next console initialization:
P00>>> wwidmgr -show adapter
item adapter WWN Cur. Topo Next Topo
[ 0] pga0.0.0.4.1 1000-0000-c920-eda0 LOOP FABRIC
[ 1] pgb0.0.0.3.0 1000-0000-c920-da01 LOOP FABRIC
[9999] All of the above.
P00>>> init
This display shows that the current topology for both KGPSA host bus
adapters is LOOP, but will be FABRIC after the next initialization.
The system initialization configures the KGPSAs to run on a fabric.
6.8.3.3 Setting the KGPSA-CA Adapter to Run in a Loop
If you do not want to use the KGPSA-CA adapter in loop mode, you can
skip this section.
Before you can use the KGPSA adapter in loop mode, you must set the link
type of the adapter to LOOP. You use the wwidmgr to accomplish this task.
Version 5.8 of the SRM console is required for boot support.
The version of the wwidmgr utility included with the SRM console can set
the KGPSA to run in arbitrated loop mode or in fabric mode. Specifically,
the wwidmgr -set adapter command stores the selected topology into
the nonvolatile random-access memory (NVRAM) storage on the KGPSA
adapter. The adapter retains this setting even if the adapter is later moved
to another system.
____________________ Link Type ____________________
If a KGPSA in loop mode is connected to a Fibre Channel switch,
the results are unpredictable. The same is true for a KGPSA in
Using Fibre Channel Storage 6–39