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ISP :

Hello

Problem: Random Diconnecting Ethernet Devices.
Infrastructure before Deco M5: Full working Network With TP-Link ROuter N750 (Internet Connection) and TP-Link 1043 (Wifi) and 2 X TP-Link TL-SG1008D Switch and Powerline adapters.
Infrastructure with Deco M5: 2 X Deco M5 and 2 X TP-Link TL-SG1008D Switch

Connected Devices with Problems: Bosch Smart Home Controller, HP850 G1 Notebook, HP820 G1 Notebook, Asus G75 Notebook, VU+ Solo Receiver, Desktop PC with Gigabyte Mainboard.

Short Problem solving true: Power disconnection of Deco M5 Gateway device.
Issue visible true fast blinking LED's on Switchport of not available device.
Device with Problem cant find IP Adrdress over DHCP or getting network connection when setting manualy.

Cross testet with:
1. Reseting all DECO M5. (Problem still present)
2. Changing the Deco Gateway device. (Problem still present)

Testing connection types:
Failing: M5 Gateway -> TL-SG1008D Switch -> M5 -> TL-SG1008D Switch -> Device
Failing: M5 Gateway -> TL-SG1008D Switch -> TL-SG1008D Switch (with M5 Connected) -> Device
Failing: Failing: M5 Gateway -> TL-SG1005D Switch -> TL-SG1008D Switch -> Device
Failing: Failing: M5 Gateway -> TL-SG1008D Switch -> TL-SG1005D Switch -> Device
Failing: Failing: M5 Gateway -> TL-SG1008D Switch -> Device

Working: M5 Gateway -> TL-SG1005D Switch -> M5 -> Device
Working: M5 Gateway -> TL-SG1005D Switch -> Device
Working: M5 Gateway -> Device



Working solution: Replacing TP-Link TL-SG1008D Switch with other Switch Model TP-Link TL-SG1005D

Please Fix this strange Bug with this switch. Its not having this Bug then using old Router N750.