ADC CUDA 3 - Manual (Page 129)

Cuda 12000 IP Access Switch CLI-based Administration Guide
Packet Over SONET (POS) Interface Administration 127
Viewing SONET Path Layer Information
The Path layer is responsible for mapping the data to be transported into the
synchronous payload envelope (SPE) of the SONET frame. It creates the STS-1
SPE and passes it to the line layer.
You can view Path-layer performance information for a selected POS
interface. This information includes defects and error statistics to provide an
assessment of Path layer operation. To view these Path-layer statistics,
perform the following task within root mode
:
The show controllers pos command includes a variety of information.
The following example displays Path-layer statistics by piping the output to
include only Path statistics:
To restart the statistics counters to zero, issue the clear counters command
within POS interface configuration mode.
BIP (B2) Even Parity is calculated over groups of 3
bytes of each frame, except the first 3
rows of TOH. The value is compared to
the B2 values in the received frame.
Mismatches are counted.
Display Element Description
Task Command
View SONET Path layer
information. show controllers pos <c/s/i> | include Path
cli:172.16.19.10:root# show controllers pos 1/3/1 | include Path
Path: AIS 0
Path: RDI 0
Path: FEBE(G1) 0
Path: BIP(B3) 0
Path: LOP 0
cli:172.16.19.10:root#