Forum Discussion

Tutor

Aug 31, 2020

Solved

GS108 dropping internet whenconnected to Xfinity gateway

Hello - since needing to add more LAN connected devices to my home network to support work and school from home, I added a GS108 switch to my network. I have Xfinity Gb internet, using the XB6 gatew...

ggraeff
Sep 02, 2020
Hello, and thank you for getting back with me. I believe that I have finally identified that problem. This morning, I upgraded my Xfinity gateway the the XB7 (to eliminate it as part of the problem), which has four LAN ports, so I was able to isolate my critical home automation hubs to it, and individually test the remaining devices on the switch. It appears that I have an Aukey USB hub, which has a LAN port, that has been failing, but also working for periods of time. This morning, it seems to be failing all the time, as plugging it in will immediately cause all nodes in the switch to drop. I'll be doing more testing, including the CAT6 cable running to that room, but I believe I've identified that the problem isn't the fault of the switch.

Thank you for you help!

DaneA

NETGEAR Employee Retired

Sep 02, 2020

ggraeff,

Let us isolate the problem. Kindly answer the questions below:

a. What is the behavior of the port LED lights on the GS108 switch?

b. Have you tried changing the ethernet cables you are using?

c. If you will connect a PC directly to the XB6 gateway, is the internet access just fine?

d. Is your GS108 switch a GS108v4 (v = version)?

Regards,

DaneA

NETGEAR Community Team

ggraeff
Tutor
Sep 02, 2020
Hello, and thank you for getting back with me. I believe that I have finally identified that problem. This morning, I upgraded my Xfinity gateway the the XB7 (to eliminate it as part of the problem), which has four LAN ports, so I was able to isolate my critical home automation hubs to it, and individually test the remaining devices on the switch. It appears that I have an Aukey USB hub, which has a LAN port, that has been failing, but also working for periods of time. This morning, it seems to be failing all the time, as plugging it in will immediately cause all nodes in the switch to drop. I'll be doing more testing, including the CAT6 cable running to that room, but I believe I've identified that the problem isn't the fault of the switch.

Thank you for you help!
schumaku
Guru - Experienced User
Sep 04, 2020
ggraeff you mentioned having some USB hub with an Ethernet port aparently killing your LAN, or a part of it.

Unluckily somebody closed your thread so we can't reply. ChristineT bad idea 8-)

Please provide details (as much as possible) on your network switches, LAN/NAT router, ... exact details of the GS108 (label!).

These USB Hub are sending out so-called stop ~~packets~~ frames when not in use e.g. powered but no computer connected. These are intended for the single link - from the USB Hub Ethernet port to the switch (the dedicated GS108, or the LAN ports on the router). Some poorly implemented switches ignore this stop packet, and forward these to other devices on the network, what can lead to the complete network stop working obviously - as all devices are told to stop sending to the network.