I am looking the maximum devices that can be connected to a Catalyst 9120AX. I found two documents, in this Cisco Catalyst 9120 Access Point Deployment Guide indicaste a maximum of 500 devices , but with the
Cisco Access Point and Wireless Controller Comparison only 200 per radio, it the have 2 radios it would be a maximum of 400.
Just to add, I think the 500 is not just wifi clients but includes clients that might be IoT using zigbee or thread. The max wireless clients supported per radio is 200, but you never ever want to get close to that. Like what you already have seen in documentation:
The max associated clients Cisco supports on an AP is 200 per interface - 400 per AP (so maybe we could get all 400 on the same AP - but it would likely not be very efficient if they all use it at once) QOE - would not be good.
Like what Leo mentioned, there is a rule of thumb but is not set in stone. Having 50 clients per ap or radio might work for some, but not for others.
The rule of thumb I normally use for an standard office space to determine the maximum number of clients associated to a 802.11ac/ax radio is the contention window value.
I try to design the WLAN in an office to have 1-AP every 31 clients at most. But remember this is a non-deterministic access and it depend on the client connection algorithm behavior.
In theory, you will have as much clients connected to an AP radio as the number of backoff values are in the first contention window, so no retransmission are likely to happen, hence increasing the QoE.
For auditoriums, classrooms or environments with lot of devices or near real-time streams of any video or audio, it all depend on the QoE you expect to have.
We are excited to announce the Second refresh of 17.6.2 EFT/Beta Program for PRODUCTION deployments.
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Thank you for the overwhelming response to the First and Second EFT refresh of 8.10MR6!
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