R3303-HP HSR6800 Routers Interface Command Reference

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<Sysname> system-view
[Sysname] controller cpos 2/0/0
[Sysname-Cpos2/0/0] t3 1 set frame-format m23
Related commands
t3 set feac
t3 set loopback
Use t3 set loopback to enable a type of loopback on the specified T3 channel.
Use undo t3 set loopback to disable loopback.
Syntax
t3 t3-number set loopback { local | payload | remote }
undo t3 t3-number set loopback
Default
Loopback is disabled.
Views
CPOS interface view
Default command level
2: System level
Parameters
t3-number: Number of a T3 channel on the current CPOS interface, in the range of 1 to 3.
local: Enables internal loopback on the T3 channel.
payload: Enables external payload loopback on the T3 channel.
remote: Enables external loopback on the T3 channel. This keyword is not supported in the current
software version, and it is reserved for future support.
Usage guidelines
Loopback is designed for troubleshooting purposes. Disable it in normal cases.
Examples
# Enable external payload loopback on T3 channel 1 of CPOS 2/0/0.
<Sysname> system-view
[Sysname] controller cpos 2/0/0
[Sysname-Cpos2/0/0] t3 1 set loopback payload
Related commands
display controller cpos t3
t3 set mdl
Use t3 set mdl to configure maintenance data link (MDL) message detection and transmission on the
specified T3 channel.
Use undo t3 set mdl to cancel the existing MDL message configuration.