R2511-HP MSR Router Series Interface Command Reference(V5)

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cbit-plcp: Sets the framing format of the ATM T3 interface to C-bit PLCP.
m23-adm: Sets the framing format of the ATM T3 interface to M23 ADM.
m23-plcp: Sets the framing format of the ATM T3 interface to M23 PLCP.
Examples
# Set the framing format of ATM E3 interface 1/0 to G.832 ADM.
<Sysname> system-view
[Sysname] interface atm 1/0
[Sysname-Atm1/0] frame-format g832-adm
loopback
Use loopback to enable a specific type of loopback testing on an ATM E3/T3 interface.
Use undo loopback to disable the loopback testing that is being performed.
Syntax
loopback { cell | local | payload | remote }
undo loopback
Default
Loopback testing is disabled.
Views
ATM E3 interface view, ATM T3 interface view
Default command level
2: System level
Parameters
cell: Enables internal cell loopback testing (to check physical chips on the local side).
local: Enables internal loopback testing (to check service chips on the local side).
payload: Enables external payload loopback testing (to check payload framing).
remote: Enables external line loopback (to check the remote end).
Examples
# Enable external payload loopback testing on ATM E3/T3 interface 2/0.
<Sysname> system-view
[Sysname] interface atm 2/0
[Sysname-Atm2/0] loopback payload
scramble
Use scramble to enable payload scrambling on the ATM E3/T3 interface. This, however, does not affect
cell headers.
Use undo scramble to disable payload scrambling.
Syntax
scramble