Fom Sfp Alarm Supervision - Siemens SWT 3000 Equipment Manual

Diagnostics and Error Handling

4.8 FOM SFP Alarm Supervision

4.8 FOM SFP Alarm Supervision
SWT 3000 FOM module is equipped with a SFP transceiver for fiber-optic connection. The SFP with a digital
diagnostic monitoring interface (DDMI) is allowed to read out real-time diagnostic information and alarm
status. The DDMI interface is only available if SFP module is compliant with SFP-8472.
Enable DDMI function
By default, DDMI monitor is disabled. It can be enabled in SWT 3000 SNMP MIB (SIEMENS-SWT3000R35.MIB)
by SNMP SET command. The MIB OID is defined as below:
OID
swtInfoSfp1Enable
swtInfoSfp2Enable
swtIpActivationReq
Supervise SFP alarm
If DDMI monitor is disabled or DDMI interface is not supported with used SFP module, alarm supervision is
skipped. SFP alarm status is monitored periodically. If alarm flag is set, general alarm is triggered. If warning
flag is set, non-urgent alarm is triggered. The active alarm / warning is displayed in PowerSys: SWT 3000 >
Information > Alarms / Errors.
Severity
WAR
WAR
WAR
WAR
WAR
ALA
ALA
ALA
ALA
ALA
For long-distance SFP (for example up to 150 km), FOM module is running exceeding the default Rx power
threshold. There is permanent Rx power alarm reported from DDMI interface. In this case, the SFP DDMI
monitor function shall be disabled. The Tx / Rx power state can be polled by NMS tool and compared with
customized threshold.
Read diagnostic information
SFP-1/2 real-time diagnostic information and alarm threshold can be readout from SWT 3000 SNMP MIB via
SNMP GET command. The example value queried from DDMI interface (Avago AFCT-5765ATPZ) is listed as
below:
198
Description
= enabled(1):
Enable SFP-1 DDMI monitor functionality
= enabled(1):
Enable SFP-2 DDMI monitor functionality
Enable SFP-2 DDMI monitor functionality
Store setting in flash and restart device.
Label
TEMP_WAR
VCC_WAR
BIAS_WAR
TXW_WAR
RXW_WAR
TEMP_ALA
VCC_ALA
BIAS_ALA
TXW_ALA
RXW_ALA
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
Explanation
SFP-1/2: Temperature high or low
warning
SFP-1/2: Voltage high or low
warning
SFP-1/2: Tx bias current high or low
warning
SFP-1/2: Tx power high or low
warning
SFP-1/2: Rx power high or low
warning
SFP-1/2: Temperature high or low
alarm
SFP-1/2: Voltage high or low alarm
SFP-1/2: Tx bias current high or low
alarm
SFP-1/2: Tx power high or low
alarm
SFP-1/2: Rx power high or low
alarm
C53000-G6040-C605-1, Edition 03.2020