Command Reference Guide

42 ● clock 3Com Router 5000 Family and Router 6000 Family
Command Reference
clock
Purpose Use the clock command to set the clock mode on the ATM interface.
Use the undo clock command to restore the default or slave.
Syntax clock { master | slave }
undo clock
Parameters master
Adopts the internal clock mode.
slave
Adopts the line clock mode.
Example Adopt the master clock on the ATM interface 4/0/0.
<3Com > system-view
[3Com ] interface atm 4/0/0
[3Com -Atm4/0/0] clock master
View This command can be used in the following views:
■ ATM Interface view
Description When an ATM interface is working as DCE, choose the master clock mode. When it is
working as DTE, choose the slave clock mode for it. When ATM interfaces of two
routers are directly connected by fiber, one end should be configured with the master
clock mode and the other with the slave clock mode.