HP MSR2000/3000/4000 Router Series Interface Command Reference

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[Sysname] controller e3 2/0
[Sysname-E3 2/0] e1 1 unframed
Related commands
e1 channel-set
fe3
Use fe3 to configure a CE3 interface to operate in FE3 mode and set the DSU mode or the subrate.
Use undo fe3 to restore the default.
Syntax
fe3 { dsu-mode { 0 | 1 } | subrate number }
undo fe3 { dsu-mode | subrate }
Default
DSU mode 1 (the Kentrox mode) is adopted, and the subrate is 34010 kbps.
Views
CE3 interface (in FE3 mode) view
Predefined user roles
network-admin
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.
0: Specifies the Digital Link mode, where the subrate is a multiple of 358 kbps and is in the range of 358
to 34010 kbps (up to 95 rate levels are available).
1: Specifies the Kentrox mode, where the subrate is a multiple of 500 kbps and is in the range of 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 is in the range of 1
to 34010 (in kbps).
Usage guidelines
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.
This command is only applicable to CE3 boards that support FE3.
This command is available only in E3 mode.
As for the fe3 subrate command, the actual subrate usually is not exactly the one set by the command.
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. The actual rate does not include the
overhead bits, and the baudrate is the actual E3 line rate (34368 kbps), with the overhead bits counted
in.