R3102-R3103-HP 6600/HSR6600 Routers Interface Command Reference

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sonet: Sets the framing format to SONET OC-3, the optical carrier level three (OC-3) of synchronous
optical network (SONET).
Examples
# Set the framing format to SDH STM-1 on an ATM OC-3c/STM-1 interface.
<Sysname> system-view
[Sysname] interface atm 5/1/0
[Sysname-Atm5/1/0] 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 5/1/0.
<Sysname> system-view
[Sysname] interface atm 5/1/0
[Sysname-Atm5/1/0] 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