3Com 9000 manual Setting Up, Switch Clock Source, Get Clock Source, Status

Setting Up the Switch Clock Source 107

Setting Up the	Using this option, you can set up all the parameters to configure and
Switch Clock Source	synchronize the data speed clocks on different ports of the CoreBuilder
	9000 ATM Enterprise Switch to an external clock source.
	Get Clock Source Status
	Set External Clock Source 1
	￿Set External Clock Source 2
	Set Clock Source to Internal
Get Clock Source	Display the active clock status and the current status of the ports defined
Status	as the active and standby clock ports.
	The active clock source may be Internal or External. If the active clock
	source is External, one of the source ports must be active and the other
	source port may be None, Standby or Failed (not connected). If the active
	clock source is Internal, that is, no source port has been defined as the
	active clock port, the source ports are both set to None.
	Command Actions
	Enter menu sequence:	(1) SYS: Platform Configuration
		(8) SCS: Switch Clock Synchronization
		Setup
		(1) GET: Get Clock Source Status
	Direct access sequence:	1 8 1
	Command Result
	System action:	The current active clock source and current external

clock port statuses are displayed.

System message display: Information is displayed as shown in the example.

Example

Enter: 1 8 1

The clock source information is displayed:

Active Clock source is EXTERNAL
External	Clock	source	port	1	is	<1.2.4>	active
External	Clock	source	port	2	is	<5.1.2>	standby