Command Reference Guide

3Com Router 5000 Family and Router 6000 Family idle-mark ● 215
Command Reference
idle-mark
Purpose Use the idle-mark command to set the line idle-mark of the synchronous serial
interface to “FF”.
Use the undo idle-mark command to restore the line idle-mark of the
synchronous serial interface to “7E”.
Syntax idle-mark
undo idle-mark
Parameters None
Default Line idle-mark of synchronous serial interfaces defaults to “7E”.
Example Set the line idle-mark of the synchronous serial interface to FF.
[3Com -Serial0/0/0] idle-mark
View This command can be used in the following views:
■ Synchronous Serial Interface view
Description In normal circumstances, the synchronous serial interface uses the code “7E” to
identify the idle state of the line. However, there are still some devices that use “FF”
(that is, the high level of all “1s”) to make the identification. For the sake of
compatibility in this case, it is necessary to configure the line idle-mark of the
synchronous serial interface.