Nortel North American DMS-100 Instruction Manual page 656

11
12
13
14
DMS-100 Family NA100 Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
Trouble locating and clearing procedures (continued)
Troubleshooting a customer-reported failure
Determine from the MAP banner if any alarms are present under the PM
header.
If alarms
are present
are not present
Perform the correct procedures to clear the alarm. Refer to Alarm and
Performance Monitoring Procedures .
Check the operational measurements (OM) that apply to DataSPAN. Look for
high counts of cyclic redundancy check (CRC) errors in:
• OM group FRSAGENT, register PTERR for each involved agent
• OM group FRSPM, register PORTERR for each involved device
• OM group FRT1, register FRT1CRC for the involved carrier
For example, to check register FRT1CRC for OM group FRT1, type
>OMSHOW FRT1 ACTIVE 3
and press Enter.
Example of a MAP response
CLASS: ACTIVE
START:1997/08/21 21:15:00 THU; STOP:1997/08/21 21:16:10 THU;
SLOWSAMPLES:
INFO (FRT1OMINF)
FRT1LCGA FRT1RCGA
FRT1MBU FRT1CBU
FRT1SES FRT1UAS
3 FRIU 29
0 0
0 0
0 0
For more information on OMs, refer to Operational Measurements Reference
Manual .
To post the access channel, type
>CARR;CHAN;POST
and press Enter.
where
chan_no
is the channel number that appears in response to the PVDNCI
command
Example of a MAP display:
No PM alarms
Do
step12
step13
1; FASTSAMPLES
FRT1LOF FRT1SBU
FRT1BER FRT1ES
FRT1AIS FRT1CRC
0 0
0 0
0 0
chan_no
1-635
(continued)
7;