6Figure 3 The relationship between the protocol and screen output switchConfiguring system debuggingAdministrators usually use the debugging commands to diagnose network failure. However, output of thedebugging information may reduce system efficiency. Therefore, when debugging is completed, disablethe debugging function that was used, or use the undo debugging all command to disable all thedebugging functions.Output of debugging information depends on the configurations of the information center and thedebugging commands of each protocol and functional module. Debugging information is commonlyoutput to a terminal (including console or VTY) for display. You can also output debugging informationto other destinations. For more information, see Network Management and Monitoring CommandReference. By default, you can output debugging information to a terminal by following these steps:To do… Use the command… RemarksEnable the terminalmonitoring of systeminformationterminal monitorOptionalThe terminal monitoring on the console isenabled by default and the terminalmonitoring on the monitoring terminal isdisabled by default.Available in user viewEnable the terminal display ofdebugging information terminal debuggingRequiredDisabled by defaultAvailable in user viewEnable debugging for aspecified moduledebugging { all [ timeout time ] |module-name [ option ] }RequiredDisabled by defaultAvailable in user view
