HP Brocade 8/12c Brocade Fabric OS Command Reference Manual Supporting Fabric - Page 654

2 portCfg 622 -F |--ficon [0|1] Enables (1) or disables (0) FICON emulation on the specified FCIP tunnel. Optional FICON arguments for fciptunnel create allow you to control specific features. Use the [0|1] value only with fciptunnel modify. --ficon-xrc [0|1] Enables (1) or disables (0) FICON XRC emulation. FICON XRC Emulation allows XRC (IBM eXtendedRemote Copy, also known as IBM z/OS Global Mirroring) to operate effectively at extended distances. --ficon-tape-write [0|1] Enables (1) or disables (0) FICON Tape Write Pipelining. This feature improves the performance of certain applications when writing to tape over extended distances. --ficon-tape-read [0|1] Enables (1) or disables (0) FICON Tape Read Pipelining. This feature improves performance for certain applications when reading from FICON tape over extended distances. --ficon-tin-tir [0|1] Enables (1) or disables (0) FICON TIN/TIR emulation. This feature enhances recovery when a TIN/TIR exchange occurs as part of a channel recovery operation during tape emulation. --ficon-dvcack [0|1] Enables (1) or disables (0) FICON 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. --ficon-read-blk [0|1] Enables (1) or disables (0) FICON read Tape Read Block ID emulation. This feature permits FICON write channel programs containing embedded read block ID commands (CCWs) with a byte count of exactly four bytes to be processed as emulated commands during write emulation processes. --max-read-pipe value Defines the maximum number of tape read channel commands (CCWs) that can enter the read 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 will not affect tape write operations initiated by hosts (channels) attached at the opposite side. Too small of a value will result in poor performance. The value should be chosen based upon the typical tape channel program that requires optimum performance. The default value is 32. The range is 1 to 100. --max-write-pipe 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 will not affect tape write operations initiated Fabric OS Command Reference 53-1001764-01