3Com 10014299 Synchronous Serial Interface, Configure AUX interface, Enter AUX interface view

Synchronous Serial Interface 123

Configure AUX interface

1Enter AUX interface view

Perform the following configuration in the all views.

Table 108 Enter AUX interface view

Operation	Command
Enter AUX interface view	interface aux 0

2Configure AUX interface

The configuration of AUX interface is basically the same with that of common asynchronous serial interfaces. The following items should be noted:

a The operating mode of AUX interface is Flow mode by default, and AUX interface work in dial mode by default.

b When the data bit is configured on AUX interface, the parameter of the databits command cannot be 5. That is, AUX interface does not support the data bit 5.

c When the stop bit is configured on AUX interface, the parameter of the stopbits command cannot be 1.5. That is, AUX interface does not support the stop bit 1.5.

In addition to the above points, AUX interface is configured in the same way as that of the asynchronous serial interface.

Synchronous Serial Interface

Configure Synchronous Serial Interface

Features of synchronous serial interface:

■It can work in two modes: DTE and DCE. Usually, the synchronous serial interface serves as DTE and receives DCE-provided clock.

■The synchronous serial interface can connect multiple cables externally, such as V.24 and V.35. The 3Com Router can automatically detect types of cables connected externally and select electrical characters. There is no need to configure manually.

■The link layer protocols supported by synchronous serial interface include PPP, frame relay, LAPB and X.25.

■It supports IP and IPX network layer protocol.

■Type of external cable and the working mode (DTE/DCE) of the synchronous serial interface can be viewed with display interfaces serial command.

Synchronous serial interface configuration includes:

■Set the synchronous/asynchronous serial interface to work in synchronous mode.

■Enter the view of specified synchronous serial interface.

■Set link layer protocol

■Set the digital signal encoding format

■Set baud rate.

■Select working clock

■Set clock inversion