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Generalize the warning about using an unstable connection (#33388)
Co-authored-by: Franck Nijhof <frenck@frenck.nl>
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@ -132,12 +132,15 @@ Some other Zigbee coordinator hardware may not support a firmware that is capabl
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- [ZiGate-Ethernet (Ethernet gateway board for PiZiGate)](https://zigate.fr/produit/zigate-ethernet/)
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- [ZiGate-Ethernet (Ethernet gateway board for PiZiGate)](https://zigate.fr/produit/zigate-ethernet/)
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- [ZiGate + WiFi Pack](https://zigate.fr/produit/zigatev2-pack-wifi/)
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- [ZiGate + WiFi Pack](https://zigate.fr/produit/zigatev2-pack-wifi/)
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#### Warning about Wi-Fi-based Zigbee-to-Serial bridges/gateways
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#### Warning about using Zigbee Coordinator over Wi-Fi/WAN/VPN
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<div class="note warning">
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<div class="note warning">
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The **EZSP** protocol requires a stable connection to the serial port. With _ITEAD Sonoff ZBBridge_ connecting over the WiFi network
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Be aware that using a Zigbee Coordinator via a Serial-Proxy-Server (also known as Serial-to-IP bridge or Ser2Net remote adapter) over a Wi-Fi, WAN, or VPN connection is not recommended.
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it is expected to see `NCP entered failed state. Requesting APP controller restart` in the logs. This is a normal part of the operation and indicates there was a drop in communication between ZHA and Sonoff bridge.
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Serial protocols used by the Zigbee Coordinator do not have enough robustness, resilience, or fault tolerance to handle packet loss and latency delays that can occur over unstable connections.
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A Zigbee Coordinator requires a stable local connection to its serial port interface with no drops in communication between it and the Zigbee gateway application running on the host computer.
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</div>
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</div>
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@ -721,3 +724,11 @@ services:
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restart: always
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restart: always
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network_mode: host
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network_mode: host
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```
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```
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### EZSP error and other log messages
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#### NCP entered failed state
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When you see `NCP entered failed state. Requesting APP controller restart` in logs during normal operation, it indicates a drop in communication between ZHA and the serial interface of the Silabs EmberZNet Zigbee Coordinator.
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The EZSP (EmberZNet Serial Protocol) interface used by Silicon Labs EmberZNet Zigbee Coordinator adapters requires a stable connection to the serial port; therefore, it is not recommended to use a connection over Wi-Fi, WAN, VPN, etc.
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