Network looping issue - QSW-M2116P-2T2S

English Networking
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I was using QSW-M2116P-2T2S my home 10GBE network. I got network looping prompt when connected everything. Tried turn the loop protection off but the network still crashed, just not working normally. Was thinking bad copy so got replacement but problem still occur. Can’t fix it so swap it to QSW-M408-4C that work normally so just let it as is and using separate 1gbe switch for other lower speed port and POE. now I hit the bottleneck on qty of port again and need to see option of considering get the QSW-M2116P-2T2S again. Then need to see possible solution to use it again. Although I sold it already.

Below is the network layout and hopefully somebody knows what’s going on and how to fix it. Thank you so much.

My house has 3 storeys that I used QSW-M2116P-2T2S (1st switch) for the first switch after firewall router that is at 2nd floor then one 10GBE port connect to 1st floor switch which is a QSW-M408-4C (2nd switch) that I used many QSW-M408-4C at different location in my house that will be mentioned later. Since my computer table is in different room so I need another QSW-M408-4C (3rd switch) connected from 2nd switch. Another TV room at ground floor equipped 4th switch also connected from 2nd switch.

One which is standard giga switch, connected from 2nd switch for my son’s gaming setting in living room.

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You did not include an attachment.

If you are getting a looping prompt, then your network has a loop in it which is no good. Turning off that protection is not going to help things either. You have to find the loop and eliminate it. Probably a dual 10 Gbit and 1 Gbit connection between switches.

Please post your diagram and I will try to help.

1 Like
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@RRHR Hello, thank you for your reply.

The information provided so far is still limited, so we are unable to determine whether a loop has actually occurred or if it might be a false alarm.

If your current network topology is simply a tree structure, theoretically, loops should not occur. To assist you more accurately, could you please clarify what you mean by “network crashed”? For example, is the device showing a red light, are the lights flashing continuously, or are there no lights at all?

Providing more information would help us make a useful assessment. Thank you.