Loopback; Scramble - H3C MSR 20-20 Command Reference Manual

128 C 4: ATM OC-3
HAPTER
Description
Example

loopback

Syntax
View
Parameter
Description
Example

scramble

Syntax
/STM-1 I C
C NTERFACE ONFIGURATION
sonet: Sets the framing format to SONET OC-3, the optical carrier level three
(OC-3 of synchronous optical network (SONET).
Use the frame-format
OC-3c/STM-1 interface.
Use the
undo frame-format
STM-1.
# Set the framing format to SDH STM-1 on an ATM OC-3c/STM-1 interface.
<Sysname> system-view
[Sysname] interface atm 5/0
[Sysname-Atm5/0] frame-format sdh
loopback { cell | local | remote }
undo loopback
ATM OC-3c interface view, STM-1 interface view
cell: Enables internal cell loopback.
local: Enables internal loopback.
remote: Enables external loopback.
Use the loopback
OC-3c/STM-1 interface.
Use the
undo loopback
By default, loopback is disabled.
Loopback is intended for test use. Disable it otherwise.
# Enable internal loopback on ATM interface 5/0.
<Sysname> system-view
[Sysname] interface atm 5/0
[Sysname-Atm5/0] loopback local
scramble
undo scramble
C
OMMANDS
command to set the framing format for an ATM
command to restore the default, that is, SDH
command to configure the loopback mode on the ATM
command to disable loopback.