5 • Troubleshooting and maintenance
Model 6511RC User Manual
92
Matrix Switch test tools
Figure 67. Section Trace parameters on the SDH Configuration page
3.
For
Section Trace Monitor,
select
sectionTraceEnable(1)
from the drop-down menu
.
4.
For the
Section Trace
message string
,
enter the alphanumeric string your connected SDH network uses for
the Section Trace Message String in the SDH frame.
Note
Section trace is used for 16-byte and 64-byte section trace messages
.
For 1-byte and 64-byte trace messages, the J0 byte is used and the
value of section trace is ignored.
5.
For
Section Trace Msg Len,
from the drop-down menu, select the value used by the SDH network your
Matrix Switch is connected to: either 1, 16, or 64-byte trace messages.
6.
For
Section Trace J0 Byte
enter the value your connected SDH network uses for the J0 byte in the
SDH frame.
Note
J0 is used only for 1-byte section trace messages
.
For 16-byte and 64-
byte trace messages
,
the trace message string is used and the value of
J0 is ignored.
7.
Click the
Submit
button to save your work into operating memory (volatile DRAM) and activate the new
parameter values.
Path trace
The path trace function verifies path connectivity between the two path-terminating nodes.The two SDH
path-terminating devices perform the trace over the STM-1 media segment between them. When Path Trace is
enabled, the SDH frame carries the Path Trace message in either the J1 byte or the
path trace string.
The value
you define for
Path
Trace Message Length
determines which field will carry the Path Trace message, as specified
below:
•
1-byte Trace Message Length
—
use the
J1 byte
for
trace messaging, and ignore the contents of
path trace
string.
The value of J0 may be any positive integer in the range of
0 to 255.
•
16-byte Trace Message Length
—
use the
path trace string
for path trace messaging
,
and ignore the con-
tents of
J1.
The value of
path trace string
may be any alphanumeric text string up to 15 characters long. The
16-byte field
includes
CRC-7 in the 16th byte.