H3C SR6600 Command Reference Manual

Also see for SR6600 SPE-FWM: Configuration guide Configuration guide Configuration guide Command reference Command reference

3-18ViewCE1 interface viewDefault Level2: System levelParametersmaster: Uses the internal clock as the clock source.slave: Uses the line clock as the clock source.DescriptionUse the clock command to configure clock source for the CE1 interface.Use the undo clock command to restore the default clock source, that is, line clock.When the CE1 interface is working as DCE, choose the internal clock (master) for it. When it is workingas DTE, choose the line clock for it.Examples# Use the internal clock as the clock source on CE1 interface E1 2/0/0. system-view[Sysname] controller e1 2/0/0[Sysname-E1 2/0/0] clock masterclock-change autoSyntaxclock-change autoundo clock-change autoViewCE1 interface viewDefault Level2: System levelParametersauto: Enables automatic clock mode change for the interface.DescriptionUse the clock-change auto command to enable the automatic clock mode change function on theinterface, that is, configure the interface that uses the slave clock mode to switch to the master clockmode automatically when receiving an AIS/LOS/LOF alarm. After the alarm is cleared, the interfaceautomatically switches back to the user-configured clock mode.Use the undo clock-change auto command to disable the automatic clock mode change function. Ifthe interface has already switched its clock mode, this command restores the user-configured clockmode for the interface.By default, automatic clock mode change is disabled.This command is available when the interface operates in CE1 mode.