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Tag: PoE
Symptom:
After importing a configuration file, PoE interfaces appear on a machine with no PoE interfaces.
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Problem:
Configuration exports are primarily intended for backing up configuration of the same machine, not for migrating a configuration to another piece of hardware.
When importing a configuration file from a PoE capable device (M-series or Una LC), to a machine without these interfaces the configuration file imports the interface settings for the PoE ports as well.
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Solution:
Fixed in exacqVision Server version 9.4.
ExacqVision G-Series PoE and Una recorders provide Power-over-Ethernet (PoE) ports for direct connections to cameras, rather than accessing cameras through a switched network.
The TIA/EIA 568 standard provide that the maximum allowable length of a Cat5/5e or Cat6 cable is 100 meters (328 feet) for ethernet networks. To connect a camera farther than 100m away, the network connection must be extended using a method other than a network switch.
The following information explains the trade-offs of using various extender/repeater, midspan and injector technologies to extend the network.
PoE and PoE+ Injectors and Midspans
Advantages:
- Extends the network segment over 100m
- Provides additional PoE power, reducing the PoE power drawn from the recorder; useful when the combined power draw of all cameras would exceed system limits:
- 8-port G-Series PoE, Gen2 – 15 watts per port; 120 watts total
- 16-port G-Series PoE, Gen2 – 15 watts per port; 240 watts total
- 4-port G-Series PoE, Gen1 – 15 watts per port; 60 watts total
- 8-port G-Series PoE, Gen1 – 15 watts per port; 120 watts total
- 16-port G-Series PoE, Gen1 – 15 watts per port; 240 watts total
- 8-port Una – 25 watts per port; 120 watts total
- 16-port Una – 25 watts per port; 240 watts total
Disadvantage:
- Recorder cannot power cycle cameras that are receiving PoE power from the injector or midspan.
PoE and PoE+ Extenders/Repeaters
Advantages:
- Extends the network segment over 100m
- Powered by recorder PoE power; does not require a separate power supply.
- Cameras can still be rebooted from the ExacqVision Desktop Client PoE port management page.
Disadvantage:
- A small amount of PoE power from recorder is consumed by the in-line extender, reducing power available to the camera.
Exacq Technologies does not test or make specific recommendations for products to extend ethernet networking.
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