Command Reference Guide

3Com Router 5000 Family and Router 6000 Family clock 37
Command Reference
clock
Purpose Use the clock command to set the clock mode of the ATM E1/T1 interface.
Use the undo clock command to restore the default clock mode, that is, slave.
Syntax clock { master | slave }
undo clock
Parameters master
Sets the clock mode of the ATM E1/T1 interface to
master.
slave
Sets the clock mode of the ATM E1/T1 interface to
slave.
Example Set the clock mode of ATM E1/T1 interface 1/0/1 to master.
<3Com > system-view
[3Com ] interface atm 1/0/1
[3Com -Atm1/0/1] clock master
View This command can be used in the following views:
ATM E1/T1 Interface view
Description When the ATM E1/T1 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.