180Available commands are listed below.N Display the next page.Press "N" to display the next page.P Display the previous page.Press "P" to display the previous page.C Clear all logs.Press "C" to clear all logs.S Displayed the entry log number.Press "S"The command prompt changes to "Select entry log number>."Set the range from1 to1024, 0 for last entry.I Move to the screen to change the System Log settings.Press "I" The screen changes to "Enable/Disable Individual System Log Menu."For details,refer to the next section(4.8.6.a.).Q Return to the parent menu.(RRP) Change to Link-UpStatusDisplays that a ring topology has been established.This log is displayed for the Transit nodes only.(RRP) Change to Link-Down StatusIndicates that a ring topology problem occurred.This log is displayed for the Transit nodes only.(RRP) Change to Pre-For-warding StatusDisplays that a ring topology is being established.This log is displayed for the Transit nodes only.(DDM) {Rx power|Txpower|Temperature|Volt-age|Bias current} is{exceeded|fell}{high|low} {alarm|warn-ing} on Portx.Indicates that SFP module status was changed.Rx power: Indicates that SFP Rx power status was changed.Tx power: Indicates that SFP Tx status was changed.Temperature: Indicates that SFP temperature status was changed.Voltage: Indicates that SFP voltage status was changed.Bias current: Indicates that SFP bias current status was changed.exceeded: Indicates that SFP status exceeded the threshold.fell: Indicates that SFP status recovered from threshold.high: Indicates that upper limit.low: Indicates that lower limit.alarm: Indicates the alarm.warning: Indicates the warning.(TRAP)Usage power isabove the thresholdIndicates that the PoE power supply exceeded the threshold.(TRAP)Usage power isbelow the thresholdIndicates that the PoE power supply exceeded the threshold and thendecreased below the threshold.(TRAP)System authentica-tion failureIndicates that authentication from the SNMP manager failed.(TRAP)System Cold Start Indicates that this Switching Hub was booted.