R0106-HP MSR Router Series Interface Command Reference(V7)

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Usage guidelines
Loopback is intended for testing only. Disable the feature when the interface is operating correctly.
Examples
# Enable external loopback testing on CPOS 2/4/0.
<Sysname> system-view
[Sysname] controller cpos 2/4/0
[Sysname-Cpos2/4/0] loopback remote
multiplex mode
Use multiplex mode to set AUG multiplexing mode.
Use undo multiplex mode to restore the default.
Syntax
multiplex mode { au-3 | au-4 }
undo multiplex mode
Default
The AUG multiplexing mode is au-4.
Views
CPOS interface view
Predefined user roles
network-admin
Parameters
au-3: Gets AUG through AU-3.
au-4: Gets AUG through AU-4.
Usage guidelines
SDH provides the following payload mapping/multiplexing solutions:
• ANSI—Uses the AU-3 multiplexing scheme. This scheme multiplexes the lower-order payload to the
VC-3 higher-order path. VC-3 plus an AU pointer forms AU-3. Three such AU-3s can be
synchronized and multiplexed to form one AUG.
• ETSI—Uses the AU-4 multiplexing scheme. This scheme multiplexes the lower-order payload to the
VC-4 higher-order path. VC-4 plus an AU pointer forms an AU-4. This AU-4 can be synchronized
and multiplexed to form one AUG.
When the CPOS interface is operating in SDH mode, you can choose to multiplex AUG to AU-4 or AU-3
by using the multiplex mode command.
When the CPOS interface is operating in SONET mode, AUG can be multiplexed only to AU-3. The
multiplex mode command does not take effect.
Countries and regions use different multiplexing schemes. You must use the same multiplexing scheme as
the peer device. For example, the AU-4 multiplexing scheme is used in China.
Examples
# In SDH mode, multiplex AUG to AU-3.
<Sysname> system-view