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

211
Views
CPOS interface view
Predefined user roles
network-admin
Parameters
c2 path-number c2-value: Specifies the number of a path and the path signal label byte. The value range
for the c2-value argument is 0x00 to 0xFF.
s1 s1-value: Specifies the synchronization status byte.
s1s0 path-number s1s0-value: Specifies the number of a path and the AU type and TU type.
j0 flag-value: Specifies the regenerator section trace message, which is a section overhead byte used to
detect the continuity of the connection between two interfaces at the section layer. With SDH frames,
flag-value is a string of 1 to 15 characters; with SONET frames, flag-value is in the range of 0x00 to 0xFF.
j1 path-number: Specifies the path trace message, which is a higher-order path overhead byte used to
detect the continuity of the connection between two interfaces at the path layer. With SDH frames,
flag-value is a string of 1 to 15 characters; with SONET frames, flag-value is a string of 1 to 62
characters.
sdh: Specifies the SDH framing format.
sonet: Specifies the SONET framing format.
Usage guidelines
SONET/SDH frames provide a variety of overhead bytes for operation and maintenance (OAM) such as
layered management on transmission networks.
J1, J0 and C2 are used to support interoperability between devices from different countries, areas, and
vendors.
J0 is a section overhead byte used for detecting the continuity of the connection between two interfaces
at the section layer. J1 and C2 are higher-order path overhead bytes. The J1 byte is used for detecting
the continuity of the connection between two interfaces at the path layer. The C2 byte is used for
indicating the multiplexing structure of a VC frame and the property of payload.
S1 is the synchronization status byte. The value of S1 indicates the ITU-T clock quality, by which the
device can analyze the quality of received clock signals and determine whether to switch to a
higher-quality clock source. A smaller value indicates higher clock precision.
S1S0 are two bits in the H1 byte. They are used by ITU to indicate the AU-n/TU-n type. S1S0 must be set
to 2 for AU-4, AU-3, and TU-3.
Examples
# Set J0 to aa on CPOS 2/4/0.
<Sysname> system-view
[Sysname] controller cpos 2/4/0
[Sysname-Cpos2/4/0] flag j0 sdh aa
Related commands
display controller cpos