Network dropouts

[kdn]

Can anyone explain what these black dots mean for dhcp? Every time we have a user report a drop off we can coincide these with a "dhcp did not occur" in this case the user is sitting at the desk, not moving and it seems like a roaming across Ap's has occurred but the user experiences a loss of network for minutes at a time.

trying to understand what is causing this?

[DeVoID]

any update?  I know with one of the firmware updates Extreme added some DHCP line - you will have to search community posts for that - which caused massive issues... maybe thats come back in the latest firmware update? - which im having issues with.

[Elwin]

I’ve seen this before, those black dots show when a client doesn’t complete DHCP after roaming. The device jumps between APs but loses its IP for a bit. I’d check if all APs use the same VLAN and if the DHCP relay is set up consistently, that usually fixes it.

[kdn]

Yes its always happened when they have roamed to another AP (although user is not actually moving around) 

But why I'm so suspicious of this is because its just one single SSID it happens on and its a small network just 10 AP's one flat subnet and the dhcp server is on the local router interface. So I cant imagine why we get these failures I also don't understand why we need dhcp every roam either if the lease is for 12 hours.