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

308
Default command level
2: System level
Parameters
sdh: Sets framing format to synchronous digital hierarchy (SDH).
sonet: Sets framing format to synchronous optical network (SONET).
Examples
# Set the framing format to SONET on CPOS 1/0.
<Sysname> system-view
[Sysname] controller cpos 1/0
[Sysname-Cpos1/0] frame-format sonet
loopback
Use loopback to configure the loopback mode on a CPOS interface.
Use undo loopback to disable loopback.
Syntax
loopback { local | remote }
undo loopback
Default
Loopback is disabled.
Views
CPOS interface view
Default command level
2: System level
Parameters
local: Internal loopback to test the physical interface.
remote: External loopback to test the cable connected to the interface.
Usage guidelines
Loopback is intended for test only. Disable the feature when the interface is operating correctly.
Examples
# Enable external loopback testing on CPOS 1/0.
<Sysname> system-view
[Sysname] controller cpos 1/0
[Sysname-Cpos1/0] loopback remote
multiplex mode
Use multiplex mode to set AUG multiplexing mode.
Use undo multiplex mode to restore the default.