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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
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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.
Note that many 1g optics do not support DOM so there may be no readings. We strive to use optics that support DOM on all vendors devices, such as as FlexOptix when programmed appropriately.
Commands
Cisco
Digital Optical Monitoring - DOM
| Code Block |
|---|
show interfaces transceiver |
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| Code Block |
|---|
show interfaces diagnostics optics |
Brocade
| Code Block |
|---|
show optic 1/1/x |
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| Info |
|---|
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. |
| Code Block |
|---|
show optic 1/1/x |
HP
| Code Block |
|---|
show interfaces transceiver <> detail |
Opengear
| Code Block |
|---|
sfp_info |
Additional Information
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Graphing
Both Observium and GNMIS will trend DOM data over time.
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