3Com 10014299 manual Enter the view of an E1-F interface, Set Operating mode for an E1-F interface

140CHAPTER 10: CONFIGURING WAN INTERFACE

supporting the data link layer protocols PPP, HDLC, Frame Relay, LAPB and X.25, as well as the network protocols IP and IPX.

When it works in framed mode, however, it is physically divided into 32 time slots numbered in the range of 0 to 31. In these time slots, except for time slot 0 used for synchronization information transmission, all the other time slots can be randomly bound into one channel set. E1-F interface has the rate of nx64kbps, owns logical features of synchronous serial interface, and supports the data link layer protocols PPP, Frame Relay, LAPB and X.25 as well as the network protocols IP and IPX.

Configure E1-F Interface E1-F interface configuration includes:

■Enter the view of a specified interface

■Set interface operating mode

■Set interface rate after binding operation

■Set line code format

■Set line clock

■Set interface frame format

■Enable or disable local/remote loopback

1Enter the view of a Specified Interface

Unlike CE1/PRI interface, E1-F interface has no Controller view. The system identify an E1-F interface as a synchronous serial interface, so entering the view of E1-F interface is equivalent to entering the view of the corresponding serial interface.

Perform the following configuration in all views.

Table 148 Enter the view of an E1-F interface

Operation	Command
Enter the view of an E1-F interface	interface serial serial-number

E1-F interface is sequenced based on the same numbering and are numbered together with the synchronous serial interfaces. For example, insert one 1E1-F module in slot 0 on a 3Com Router, and one 4SA module in slot 1. Hence, the

E1-F interface will be numbered Serial 0, and the 4SA interfaces will be numbered Serial 1 through Serial 4.

2 Set Interface Operating Mode

E1-F interface can work in both unframed and framed modes.

Perform the following configuration in E1-F interface view.

Table 149 Set Operating mode for an E1-F interface

Operation	Command
Set an E1-F interface to work in unframed mode	fe1 unframed
Set the E1-F interface to work in framed mode	undo fe1	unframed

By default, E1-F interfaces work in framed mode.

3 Set Interface Rate after Binding Operation

When E1-F interface works in framed mode, time slot binding on the interfaces can be made according to user's demands.