HP StorageWorks 4/16 Brocade OS Command Reference Manual Supporting Fabric OS - Page 457

portCfg 2 Defines the maximum number of concurrent emulated tape read operations. As concurrency increases, the value of emulation decreases. Excessive concurrency has the potential to oversubscribe packet data memory. The setting has significance only for host (channel) initiated operations at this side and will not affect tape read operations initiated by hosts (channels) attached at the opposite side. The default value is 16. The range is 1-32. -e |--wrtTimer value Defines a time limit for pipeline write chains.This value is specified in milliseconds (ms). If a pipeline write chain takes longer than this value to complete, the ending status for the next write chain will be withheld from the channel. This limits processing to what the network and device can support. Too small a value limits pipelining performance. Too large a value results in too much data being accepted for one device on a path. The default value is 300 milliseconds (ms). The range is 100-1500. -n |--wrtMaxChains value Defines the maximum amount of data that can be contained in a single CCW chain. If this value is exceeded, emulation is suspended. The default value is 3 (3000000 bytes) The Range is 1 Mb-5 Mb. -o |--oxidBase value Defines the base value of an entry pool of 256 OXIDs supplied to emulation generated exchanges. It should fall outside the range used by FICO channels and devices to avoid conflicts. The default value is 0x1000. The range is 0x0000 to 0xF000. -f |-dbgFlags valueDefines optional debug flags. The default is 0xF7C80000. This parameter is primarily for use by technical support personnel. ftrace FTRACE is a debug tool primarily for Tech Support personnel. It is implemented as a subcomponent of the VEnEmulation feature. It includes the ability to freeze ntraces on certain events and to retain the trace information for future examination. All FC frames that are routed through the VE port provided by an FCIP tunnel can be traced. The syntax for the portcfg ftrace command is as follows: portCfg ftrace [slot/]Ge_port tunnelId cfg | del [FeatureArgs] This command has the following operands: tunnelId Specifies the tunnel ID for the FTRACE configuration.Range 0-7. cfg Creates / modifies FTRACE configuration. del Deletes existing FTRACE configuration. The following optional Feature Arguments are supported with the cfg and del options. These configurations are persistent. -a 1|0 Enables or disables ACO. 1 is enabled, O is disabled. The default value is 0. -b Specifies number of buffers. The range is 0-8. The default value is 0. Fabric OS Command Reference 431 53-1000599-01