3Com MSR 30 CE3 interface in FE3 mode view, Described below, Set the DSU mode or the subrate

262CHAPTER 16: FUNDAMENTAL CE3 INTERFACE CONFIGURATION COMMANDS

View	CE3 interface (in FE3 mode) view
Parameters	dsu-mode: Specifies the FE3 (Fractional E3) DSU mode for a CE3 interface
	operating in FE3 mode. This keyword can be followed by 0 or 1 keyword, as
	described below:.
	0: Specifies the Digital Link mode, where the subrate is a multiple of 358 kbps and
	ranges from 358 to 34010 kbps (that is, up to 95 rate levels are available).
	1: Specifies the Kentrox mode, where the subrate is a multiple of 500 kbps and
	ranges from 500 to 24500 kbps. In this mode, the subrate can also be 34010
	kbps, making a total of 50 rate levels.
	subrate number: Specifies the subrate for the CE3 interface. The number
	argument ranges from 1 to 34010 (in kbps).
Description	Use the fe3 command to configure a CE3 interface to operate in the FE3 mode
	and set the DSU mode or the subrate.
	Use the undo fe3 command to restore the default.
	By default, DSU mode 1 (the Kentrox mode) is adopted, and the subrate is 34010
	kbps.
	FE3 mode is a non-standard E3 application mode. In this mode, the subrate level
	setting varies with vendors. You can use the fe3 command to make the device to
	be compatible with devices of other vendors operating in specific FE3 DSU modes.
	Note that:
	■ These two commands are only applicable to CE3 boards that support FE3.
	■ These two commands are only available in E3 mode.
	■ As for the fe3 subrate command, the actual subrate usually is not exactly the
	one set by the command. That is, after you set the subrate by using the fe3
	subrate command, the CE3 interface searches the subrate levels
	corresponding to the DSU mode it is operating in and selects the one that is
	closest to that set by the command as its subrate. The device then adjusts the
	hardware to allow for the subrate.
	■ You can use the display interface serial interface-number:0 command to
	check the DSU mode setting, the subrate, the actual rate, and the baudrate of
	a CE3 interface. Note that the actual rate does not count in the overhead bits,
	and the baudrate is the actual E3 line rate (that is, 34368 kbps), with the
	overhead bits counted in.
Examples	# Configure E3 2/0 interface to operate in the FE3 mode, setting the DSU mode to
	1 and the subrate to 3000 kbps.
	<Sysname> system-view
	[Sysname] controller e3 2/0
	[Sysname-E3 2/0] using e3
	[Sysname-E3 2/0] fe3 dsu-mode 1
	[Sysname-E3 2/0] fe3 subrate 3000