Loopback; Scramble - HP MSR series Command Reference Manual

Examples
# Set the framing format to SDH STM- 1 on an ATM OC-3c/STM- 1 interface.
<Sysname> system-view
[Sysname] interface atm 4/0
[Sysname-Atm4/0] frame-format sdh

loopback

Use loopback to configure the loopback mode on the ATM OC-3c/STM- 1 interface.
Use undo loopback to disable loopback.
Syntax
loopback { cell | local | remote }
undo loopback
Default
Loopback is disabled.
Views
ATM OC-3c interface view, ATM STM- 1 interface view
Default command level
2: System level
Parameters
cell: Enables internal cell loopback.
local: Enables internal loopback.
remote: Enables external loopback.
Usage guidelines
Loopback is intended for test use. Disable it otherwise.
Examples
# Enable internal loopback on ATM interface 4/0.
<Sysname> system-view
[Sysname] interface atm 4/0
[Sysname-Atm4/0] loopback local

scramble

Use scramble to enable payload scrambling on the ATM OC-3c/STM- 1 interface. This, however, does
not affect cell headers.
Use undo scramble to disable payload scrambling.
Syntax
scramble
undo scramble
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