H3C MSR 20-20, Command Reference Manual

Page: 262 / 2742

262 C
HAPTER
16: F
UNDAMENTAL
CE3 I
NTERFACE
C
ONFIGURATION
C
OMMANDS
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