This read-only INTEGER reports the current size, in bytes, of the memory pool RADIUS uses to hold the attributes it sends and receives during authentication exchanges. An admin cares because a too-small pool can cause RADIUS attribute truncation or authentication failures during peak login activity, such as many 802.1X clients authenticating at once. For example, a help-desk report of intermittent RADIUS timeouts during a morning login surge would prompt a check of this pool size.