Specifications

7-10
Cisco ONS 15454 and Cisco ONS 15327 TL1 Command Guide, R3.3
May 2002
Chapter 7 TL1 Alarms and Errors
Alarms
7.1.18 STSTRM
STS alarm detection at termination (downstream of cross-connect)
7.1.19 VT-MON
VT1 alarm detection at the monitor point (upstream of cross-connect)
7.1.20 VT-TERM
VT1 alarm detection at termination (downstream of cross-connect)
Table 7-18 STSTRM
STSTRM Alarm
Severity
(Active) Description
LOP-P CR/SA A loss of pointer (LOP) condition at the path level.
PLM-P CR/SA A signal label mismatch failure (SLMF).
TIM-P MI/NSA The expected path trace string does not match the received path trace
string. Path trace mode can be set to auto or manual for this alarm to
occur.
UNEQ-P CR/SA The path does not have a valid sender.
Ta b l e 7- 1 9 V T- M O N
VT-MON Alarm
Severity
(Active) Description
AUTOSW-LOP MI/SA Automatic UPSR protection switching took place because of an
LOP alarm.
AUTOSW-
UNEQ
MI/SA Automatic UPSR protection switching took place because of an
UNEQ alarm.
LOP-V MA/SA A loss of pointer at the VT level.
UNEQ-V MA/SA The node is receiving SONET path overhead with bits 5, 6 and 7 of
the V5 overhead byte all set to zeroes. The failure has occurred at
the VT layer.
Ta b l e 7- 2 0 V T- T E R M
VT-TERM Alarm
Severity
(Active) Description
LOP-V MA/SA A loss of pointer at the VT level.
PLM-V MI/SA The content of the V5 byte in the SONET overhead is inconsistent
or invalid.
UNEQ-V MA/SA The node is receiving SONET path overhead with bits 5, 6 and 7 of
the V5 overhead byte all set to zeroes. The failure has occurred at
the VT layer.