Nortel Networks 8000 - Manual (Page 78)

Nortel Secure Router 8000 Series
Configuration -WAN Access 4 POS and CPOS interface configuration
—End
4.3.4 Configuring overhead bytes
Do as follows on the routers:
Step 1 Run:
system-view
The system view appears.
Step 2 Run:
controller epos cpos-number
The CPOS interface view appears.
Step 3 Run:
flag { j0 j0 -string | j1 jl-string | c2 c2-value }
The command configures the overhead bytes of the CPOS interfaced.
The SONET/SDH provides a variety of overhead bytes, which perform the monitoring
function of different levels.The C2 indicates the multiplex structure of VC frame and the
property of information payload. The J0 is a section overhead byte that detects the
connectivity of two ports on the section layer. The J1 is higher order path overhead bytes and
that detects the connectivity of two ports on the path layer.
Make the C2, J0, J1, on the receiving end and the sending be consistent; otherwise, an alarm
is generated.
For the CPOS interface, the default value of C2 is 02 (0x02), the default value of J0 and J1 is
"NetEngine".
—End
4.3.5 Configuring AUG multiplexing route
CD
NOTE
• You can run the command lines to configure the AUG multiplexing route only when CPOS
interfaces work in SDH mode.
• When CPOS interfaces work in SONET mode, you can adopt only the AU-3 multiplexing route and
cannot run the command lines for configuration.
Do as follows on the routers:
Step 1 Run:
system-view
The system view appears.
Step 2 Run:
controller epos cpos-number
The CPOS interface view appears.
Issue 5.3 (30 March 2009) Nortel Networks Inc. 4-17