Information
Digital Optical Monitoring (DOM) is an industry wide standard, intended to define a digital interface to access real-time operating parameters such as:
- Optical Tx Power - light level transmitted
- Optcal Rx Power - light level received
- Laser Bias Current
- Temperature
- Transceiver Supply Voltage
With the use of DOM, we are able to perform transceiver monitoring and troubleshooting operations in regards to SFPs that WiscNet deploys on CPE or hub devices.
We strive to use optics that support DOM on all vendors devices, such as FlexOptix when programmed appropriately.
Commands
Cisco
Digital Optical Monitoring - DOM
show interfaces transceiver
Fortigate
get sys interface transceiver
Juniper
show interfaces diagnostics optics
Brocade
Requires 'optical-monitor' to be in the interface config. It only lets you put it in if it likes the optic. Also will only show DOM when an interface is already linked AND after a minute or so.
show optic 1/1/x
HP
show interfaces transceiver <> detail
Opengear
sfp_info
Graphing
Both Observium and GNMIS will trend DOM data over time.
- Observium
- Find the device and interface, it should show up as a sensor.
- Direct link to all DOM sensors in observium
- GNMIS
- Uses the SNMP MIB name as the dataset, so varies by vendor.
- Juniper
- jnxDomCurrentRxLaserPower / jnxDomCurrentTxLaserPower (native) OR jnxUtilReceivePowerdBm if SLAX script based
- GNMIS link to these datasets
- Cisco
entSensorValue
- GNMIS link to these datasets