IBM 2109 Service Guide - Page 123

switch:admin> diagDisablePost Committing configuration ... done. On next reboot, POST will be skipped. Figure 52. diagDisablePost command example diagEnablePost Figure 53 shows the diagEnablePost command, which enables POST processing. The choice remains in effect across power-on and power-off cycles until toggled by the user. The startup time with POST processing is approximately 110 - 120 seconds for a warm POST and 165 - 175 seconds (based on a 2109 Model S16) for a cold POST. The factory default enables POST processing. switch:admin> diagEnablePost Committing configuration ... done. On next reboot, POST will be performed. Figure 53. diagEnablePost command example diagShow Figure 54 on page 108 shows the diagShow command, which summarizes the diagnostic results since the switch last turned on, including POST results. The fields are described in Table 34 on page 108. The command also allows you to loop on the command. For example, if you enter diagShow 4, the diagShow command is executed every 4 seconds continuously unless stopped by pressing Enter. This is used to isolate a bad GBIC. A port with a changing value in the low-level interface count field (LLI_errs) is prefixed by two asterisks (**) in the display. Appendix B. Diagnostics 107