HP StorageWorks 8/80 HP StorageWorks Fabric OS 6.1.2 release notes (5697-0349, - Page 20

• mode-Specifies the fill word for portnumber. This operand is required. Valid values are as follows: • 0-IDLE in Link Init and IDLE as fill word (default) • 1-ARB(FF) in Link Init and ARB(FF) as fill word • Example: To set the fill word of a port to ARB(FF)-ARB(FF): switch:admin> portcfgfillword 2/3, 1 For more information, see the description of the portCfgShow command in the Fabric OS Command Reference Manual. • Behavior: • Default mode The only mode of operation in releases earlier than Fabric OS 6.1.2 was the IDLE implementation. The new portCfgFillWord command was implemented beginning with version 6.1.2 which enables the user to configure the ARB(FF) configuration. The default for FOS 6.1.2 remains the IDLE implementation (mode 0). • Existing product For products in the field, this change has no effect on current configurations. The mode is currently 0, and during a firmware upgrade, the mode will remain 0 and no devices will be impacted. If a new device is added to the configuration, and it requires the ARB sequence, the ports can be configured at that time. Loading Fabric OS 6.1.2x or later does not automatically change the mode. In current configurations, the mode must be changed manually. This does not affect 1-Gb, 2-Gb, or 4-Gb devices. The mode 1 setting has no effect on these devices; it affects only devices that negotiate or are fixed at 8-Gb speeds. • Changing the mode after Fabric OS 6.1.2x has been installed If you change the mode after installing Fabric OS 6.1.2x, the portCfgFillWord command changes the configuration parameter in accordance with the selected mode, and automatically disables/enables the port for which the command was invoked. Subsequent Link Initializations will default to the new mode setting). • Other scenarios The portCfgFillWord command has no effect on 1-Gb, 2-Gb, or 4-Gb devices, but the mode is persistent. If a device attempts to negotiate or is fixed at 8 Gb, the configured mode will take effect. The persistent configuration is on a port-by-port basis; that is, if an 8-Gb device is connected to a 2-Gb or 4-Gb SFP, and that SFP is replaced with an 8-Gb SFP, then the current behavior of the mode is activated. Table 7 summarizes the portcfgfillword command. Table 7 portcfgfillword command summary Fabric OS version All 8-Gb switches (except 8-Gb SAN Switch for HP BladeSystem cClass and EVA4400 embedded switch module, which do not support v6.1.2x) Any Fabric OS earlier than 6.1.2 All ports set to IDLE. No ARB(FF) capability. 20