Itf; Loopback - HP MSR series Command Reference Manual

itf

Use itf to set the number of interframe filling tags.
Syntax
itf number number
undo itf number
Default
The number of interframe filling tags is four.
Views
Synchronous serial interface view
Default command level
2: System level
Parameters
number number: Sets the number of interframe filling tags. (An interframe filling tag is one byte in length.)
The value range is 0 to 14 bytes.
Examples
# Set the number of interframe filling tags to five.
<Sysname> system-view
[Sysname] interface serial 2/0
[Sysname-Serial2/0] itf number 5

loopback

Use loopback to enable loopback on the serial interface.
Use undo loopback to restore the default.
Syntax
loopback
undo loopback
Default
Loopback is disabled.
Views
Serial interface view, AUX interface view, AM interface view
Default command level
2: System level
Usage guidelines
Loopback is intended for test use. Disable loopback in other cases.
Examples
# Enable loopback on interface Serial 2/0.
<Sysname> system-view
69