Hi Philip, Thank you for your response. For background, I have 20 years' experience as a leading Wi-Fi network consultant and engineer, so please feel free to ask questions as deeply as you like 🙂 i). The Clients were Associated (connected) to the 5GHz AP radios. ii). The clients are getting signal strengths of around -65dBm to -70dBm or better, which is more than adequate for a reliable 802.11 Association. iii). Poor signal strength (dBm) or poor Signal-to-Noise Ratio (SNR)(dB) at the Client would tend to: Increase frame loss at the Client (causing Downlink frame loss: AP-to-client frames) until the Adaptive Rate Shifting (ARS) algorithm at the AP reduced the AP's transmit bit rate (Modulation and Coding Scheme - MCS). So a key question in this respect is: Do the Meraki logged messages "excess frame loss" refer to: a. Frame loss at the Client - recognised by missing Uplink (Client-to-AP) ACK frames at the AP? .. leading to Downlink frame re-transmissions by the AP, and a counter or rate for those re-transmissions that would be recorded by the AP? or b. Frame loss at the AP - recognised by CRC errors in Uplink frames received from the Client at the AP? iv). The SNR reported at the Meraki APs is mostly in the region of 39 to 41 dB - which is again more than adequate for a reliable 802.11 Association. Poor SNR or poor signal strength at the APs (Uplink SNR (dB) or Uplink signal strength (dBm)) would would tend to: Increase frame loss at the AP (client-to-AP, that is Uplink frame loss) until the Adaptive Rate Shifting (ARS) algorithm at the Client reduced the Client's transmit bit rate (Modulation and Coding Scheme - MCS). -oOo- Can someone answer my original questions please? What percentage or rate of 802.11 frame loss is sufficient to cause the Meraki access point to disassociate a client? How can we adjust that percentage threshold, or frame loss rate threshold, or the timespan over which that percentage/rate is assessed - so that clients will then not be disassociated as often as they are currently being? How can I see the actual percentages of frame loss / frame error rates: For each client? For each AP? For the customer's network as a whole? My fourth (new) questions is: 4. Do the Meraki logged messages "excess frame loss" refer to: a. Frame loss at the Client - recognised by missing Uplink (Client-to-AP) ACK frames at the AP? .. leading to Downlink frame re-transmissions by the AP, and a counter or rate for those re-transmissions that would be recorded by the AP? or b. Frame loss at the AP - recognised by CRC errors in Uplink frames received from the Client at the AP? Many thanks, Ian
... View more
