We found the following https://gtacknowledge.extremenetworks.com/articles/Q_A/What-are-the-recommended-settings-for-Ascom-V...
which states that ADDBA support and Aggregate MPDU should be disabled.
We are using AP3915i and V10.41 Firmware and the default setting is ADDBA support and Aggregate MPDU enabled. However, the knowledge base article above states to disable it.
Is this (disable that) because of the following (resolved) problem: https://gtacknowledge.extremenetworks.com/articles/Solution/Wireless-packet-drop-with-ADDBA-enabled-...
Currently, we do not have any problem but should we disable these two options or not?
By the way we had problems (audio spikes) with WL3 (a flavor of Ascom i62) configured with g/n and 11n protection mode beeing "Auto". According to https://gtacknowledge.extremenetworks.com/articles/Solution/Wireless-users-not-able-to-attach-or-authenticate-to-a-3825i-5Ghz-radio
11n protection mode should be None, and sure enough the problems disappeared (we also had the mentioned AP log entries "WAL_DBGID_DEV_TX_TIMEOUT"). What does the 11n protection mode do?