Loop detected
Hi,
I have a network with the following topology:
In the protocol of my Omada controller I can see a loop detected warning every few minutes:
Port 1 of the switch is the connection to the EAP772 and Port 5 is the trunk to the SG2008P (SW_Keller).
What does this mean and what can I do to fix this?
Thanks
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Do you have mesh enabled?
Having mesh enabled on EAPs that have wired connections can sometimes create a loop
Otherwise, you need to double check that no wired network devices have any kind of link to other switches or devices they shouldnt have
A Loop is essentially when a switch is detecting its own broadcast or ARP data coming back to itself. In your case loop detection is kicking in and protecting the network from crashing
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@GRL Indeed Mesh was enabled. I disabled it now, but the warning still occurs.
What do you mean with the wired devices? Every device I have has exactly one network cable and that is connected to one switch.
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Loop can only be reported if there is a loop, and the only way a loop can occur is if you have some incorrect connection from/to the same switch, and it doesnt have to be directly on it, it can loop back through other switches too.
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@GRL ok, thanks for the explanation.
Is there some way how I can further narrow down this? Maybe something better than the brute force method (disable one device after each other and at some time see when the warning stops)?
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This is probbaly the only way, once you disconnect something and the errors stop showing, work from there - whatever come off that port must be causign the loop, and it can be anything downstream of it, even if it splits on a switch further down
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@GRL ok thank you, I will try to find out.
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Hi @steven11
Based on GRL's suggestion, you may prior to check those clients with mesh feature, such as sonos mesh speakers, etc.
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@Vincent-TP no, not so far. I didn't have the time so far to do this.
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Hi @steven11
No worries! Whenever you have the time or need help getting started, feel free to reach out.
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