HP AE370A HP StorageWorks Fabric OS 6.2 administrator guide (5697-0016, May 20 - Page 510
Mode register bit settings
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change it and notify the channel of the change. The channel will ask what the MIHPTO is set to during the time where it is bringing that link to the CUP online. The MIHPTO setting will persist across reboots, POR, and failovers. Setting this value to the upper end of the time range will allow the CUP to process more requests, such as at peak usage times, without timing out the channels. HP recommends that the value should be set to 180 seconds in a SAN with B- and M-Series switches. The default value is 15 seconds. 1. Log in to the switch as admin. 2. Disable the switch. 3. Enter the ficonCupSet MIHPTO command and set the value between 15 and 600. Example: Setting the MIHPTO value switch:admin> ficoncupsetMIHPTO 447 The input value of the MIHPTO will be rounded down to the nearest value divisible by 10. This is due to IBM's MIHPTO specification. MIHPTO has been changed to 440 seconds Mode register bit settings The mode register bits are described in Table 98. Table 98 POSC FICON CUP mode register bits Programmed offline state control. When this bit is set on, the host is prevented from taking the switch offline. The default setting is 1 (on). UAM User alert mode. When this bit is set on, a warning is issued when an action is attempted that will write CUP parameters on the switch. The default setting is 0 (off). ASM DCAM Active=saved mode. When this bit is set on, all CUP configuration parameters are persistent, meaning that they will be saved in nonvolatile storage in the initial program load (IPL) file that is applied upon a cold reboot or a power cycle. The default setting is 1 (on). Switch clock alert mode. When this bit is set on, a warning is issued when the date, tsClockServer, or tsTimeZone commands are entered to set the time and date on the switch. The default setting is 0 (off). ACP Alternate control prohibited. Because the Fabric OS CLI, Web Tools, and Data Center Fabric Manager are considered to be switch consoles, this bit has no effect on their operation. Attempts to set CUP parameters through SNMP are denied when this bit is set on. The default setting is 1 (on). HCP Host control prohibited. When this bit is set on, the host is not allowed to set CUP parameters. The default setting is 0 (off). The ficonCupShow modereg command displays the mode register bit settings for the switch. A display of 0 indicates that the mode register bit is set to off; 1 indicates that the bit is set to on. The command format is: ficoncupshow modereg [bitname] where bitname is one of the mode register bits described in Table 98. To display all mode register bit settings for the switch: switch:admin> ficoncupshow modereg POSC UAM ASM DCAM ACP HCP 1 0 1 0 1 0 506 FICON fabrics
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