One day, customer reported that there is BD_AT_LOWPOWER on a EGS4 board of OSN 7500. The host version is V1R8C02SPC200. The alarm is as follows.
190651 24 BD_AT_LOWPOWER MJ end 2011-03-07 20:40:18 2011-03-08 02:39:48 0x05 0xff 0xff 0xff 0xff
1.According the parameter of BD_AT_LOWPOWER, check 5-EGS4, find the physical board is N4EGS4, but logic board is N3EGS4.
2.Confirm with customer, logic board is configured after installation.
3.Soft rest 5-EGS4, BD_AT_LOWPOWER disappears.
The first parameter of BD_AT_LOWPOWER indicates the board slot which works in low power mode.
For N4EGS4, if logic board is configured as N4EGS4, it doesn't support high power mode, if it's configured as N3EGS4, it support high power mode. The board enable or disable high power mode when board startup only. Customer
inserted the N4EGS4 first, then configured the logic board as N3EGS4, so high power mode was not enalbed, BD_AT_LOWPOWER appeared. Soft reset the board can solve the problem.