R3303-HP HSR6800 Routers Interface Command Reference

62
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
undo scramble
Default
Payload scrambling is enabled on the ATM OC-3c/STM-1 interface.
Views
ATM OC-3c interface view, STM-1 interface view
Default command level
2: System level
Usage guidelines
With payload scrambling enabled, the interface performs payload scrambling when transmitting data,
and payload descrambling when receiving data. Payload scrambling prevents consecutive 0s and 1s in
the payload.
Disabling payload scrambling disables both payload scrambling during data transmission and payload
descrambling during data receiving.
Examples
# Enable payload scrambling on ATM interface 5/1/0.
<Sysname> system-view
[Sysname] interface atm 5/1/0
[Sysname-Atm5/1/0] scramble