3Com MSR 50, MSR 30 manual Frame-format sdh sonet

ATM OC-3C/STM-1 INTERFACE

4 CONFIGURATION COMMANDS

clock

Syntax	clock { master slave }
	undo clock
View	ATM OC-3c interface view, STM-1 interface view
Parameter	master: Sets the clock mode as master.
	slave: Sets the clock mode as slave.
Description	Use the clock command to set the clock mode for an ATM OC-3c/STM-1
	interface.
	Use the undo clock command to restore the default, that is, the slave clock
	mode.
	When the ATM interface is operating as DCE, set its clock mode to master. When
	the interface is operating as DTE, set its clock mode to slave.
	When the ATM interfaces on two routers are connected directly through a
	fiber-optic cable, set the clock mode to master at one end and to slave at the other
	end.
Example	# Set the clock mode of ATM interface 5/0 to master.
	<Sysname> system-view
	[Sysname] interface atm 5/0
	[Sysname-Atm5/0] clock master

frame-format

Syntax	frame-format { sdh sonet }
	undo frame-format
View	ATM OC-3c interface view, STM-1 interface view
Parameter	sdh: Sets the framing format to SDH STM-1, the synchronous transport
	module-level 1 (STM-1) of synchronous digital hierarchy (SDH).