Brocade FICON Administrator’s Guide (Supporting Fabric OS v7.3.0) - Manual (Page 64)

The IPL is not replaced because Active=Saved mode is enabled. A warning message is displayed in
the event log to warn users that the IPL will not be overwritten.
Configuration files downloaded with Active=Saved mode disabled
The contents of existing files saved on the switch, which are also present in the [FICU SAVED FILES]
section, are overwritten.
When the Active=Saved mode register bit is set to off, the contents of existing files saved on the
switch, also present in the [FICU SAVED FILES] section of the configuration file, are overwritten.
The IPL is replaced because Active=Saved mode is disabled.
Sample IOCP configuration file
The channel subsystem controls communication between a configured channel, the control unit, and
the device. The I/O Configuration Data Set (IOCDS) defines the channels, control units, and devices to
the designated logical partitions (LPARs) within the server; this is generated using the Input/Output
Configuration Program (IOCP). The IOCP statements are typically built using the hardware
configuration definition (HCD). The interactive dialog is used to generate the Input/Output Definition
File (IODF), invoke the IOCP, and subsequently build the production IOCDS.
Each FICON switch in a fabric must have a unique domain ID and a unique switch ID. The switch ID
used in the IOCP definitions can be any value between x00 to xFF. The domain ID range for switches
is hex x01 to xEF or decimal 1 to 239. When defining the switch IDs in the IOCP definitions, ensure
that you use values within the FICON switch’s range.
The switch ID must be assigned by the user and must be unique within the scope of the definitions
(IOCP and HCD).
The domain ID is assigned by the manufacturer and can be customized to a different value. It must be
unique within the fabric.
Brocade recommends that the switch ID (IOCP or HCD) be set to the same value as the domain ID of
the FICON switch, which is defined to the switch at installation time. This simplifies the configuration
and reduces confusion by having a common designation across all definitions.
For more information on switch numbering, refer to the IBM publication, FICON
®
Implementation
Guide (SG24-6497-00).
In the following sample IOCP configuration file, the UNIT value for FICON CUP definitions is 2032 for
any FICON switch regardless of vendor or platform. All Brocade switches require UNIT=2032 for the
CUP definition. All domain IDs are specified in hex values in the IOCP (and not in decimal values).
*------------------------------------------------------------------
* Brocade Domain_ID=0x3c0000
*------------------------------------------------------------------
CNTLUNIT CUNUMBR=0D8,UNITADD=00,UNIT=2032,
PATH=(50,51),
LINK=(60FE,60FE)
IODEVICE ADDRESS=(0D8,1),CUNUMBR=0D8,UNIT=2032,STADET=Y,UNITADD=00
*---------------------------------------------------------------
CNTLUNIT CUNUMBR=0D9,UNITADD=00,UNIT=2032,
PATH=(8A,8B),
LINK=(22FE,22FE)
IODEVICE ADDRESS=(0D9,1),CUNUMBR=0D9,UNIT=2032,STADET=Y,UNITADD=00
*------------------------------------------------------------------
* Brocade Domain_ID=0x190000
*------------------------------------------------------------------
*
CNTLUNIT CUNUMBR=0DB,UNITADD=00,UNIT=2032,
PATH=(5A,5B),
LINK=(25FE,25FE)
IODEVICE ADDRESS=(0DB,1),CUNUMBR=0DB,UNIT=2032,STADET=Y,UNITADD=00
Configuration files downloaded with Active=Saved mode disabled
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