Brocade Communications Systems 1606 Command Reference Manual page 623

ficon
Fabric OS Command Reference
53-1001337-01
Use this command to enable or disable FICON emulation in an FCIP tunnel
and modify associated parameters onan FCIP tunnel on a 'virtual' E_Port. A
feature key is required to enable any of the FICON emulation processing. The
tunnel must be down or disabled to issue and process the FICON commands.
The result of this command are persistent. The syntax for portCfg ficon is as
follows:
portCfg ficon [slot/]Ge_Port tunnel_Id config |delete [FeatArgs] [ParamArgs]
This command has the following operands:
tunnel_Id Specifies the tunnel ID for the configuration change. The valid range is 0-7.
config Creates or modifies a FICON configuration.
delete Deletes an existing FICON configuration.
The following optional feature arguments are supported with the config and delete
options. These configurations are persistent.
-x 1|0 Enables (1) or disables (0) XRC emulation. FICON XRC Emulation allows
XRC (IBM eXtendedRemote Copy, also known as IBM z/OS Global
Mirroring) to operate effectively at extended distances.
-w 1|0 Enables (1) or disables (0) Tape Write Pipelining. This feature improves
the performance of certain applications when writing to tape over
extended distances.
-r 1|0 Enables (1) or disables (2) Tape read pipelining. This feature improves
performance for certain applications when reading from FICON tape over
extended distances.
-t 1|0 Enables or disables TIN/TIR emulation. This feature enhances recovery
when a TIN/TIR exchange occurs as part of a channel recovery operation
during tape emulation.
-l 1|0 Enables (1) or disables (0) Device Level Acknowledgement emulation.
This feature is applicable to both FICON Disk and Tape configurations.
The feature removes one network round trip for exchanges that end with
a Device Level Acknowledgement frame from the device. 1 is enabled, O
is disabled.
-i 1|0 Enables (1) or disables (0) FICON tape read block ID. This feature permits
FICON write channel programs containing embedded read block ID
commands (Cadres) with a byte count of exactly four bytes to be
processed as emulated commands during write emulation processes.
The following optional parameter-specific arguments are supported with the config and
delete options.
-a |--wrtMaxPipe value
Defines the maximum number of tape write channel commands (CCWs)
that can enter the write pipeline for a single device whether all the CCWs
are bundled in a single channel program or in multiple channel
programs. The setting has significance only for host (channel) initiated
operations at this side and does not affect tape write operations initiated
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portCfg
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