AiMesh apparently uses/shares TVL data with neighbor smart/managed switches for AiMesh. I originally had one (still have it as I found the issue after 30 days) that did not support it and the system log of the ASUS router kept popping up an error missing tvl data 2 times at 12 second intervals. TVL data is capability data shared by each smart node. The acronym stands for Link Layer Discovery Protocol, Type Length Variable data is the information encapsulated I believe. (I actually opted for the managed switch to share the static IP I assigned to it/it's management page.
