Extreme Networks WS-AP3825 vs Extreme Networks WS-AP3935

Recently discovered these two models are supported by OpenWrt now and tempted to ditch the unifi/controller setup to a few of those flashed with OpenWrt.

How big of a difference:

  • Freescale P1020 vs IPQ8068 make for the dumb AP?
  • 64Mb/256Mb vs 32Mb/512Mb make for the dumb AP in the hundred-ish devices environment? Should I be concerned about not being able to flash even custom 24.xx images on the newer (32Mb/512Mb) models?
  • Atheros AR9590/Atheros QCA9890 combo vs dual Atheros QCA9990 make for a dumb AP?

Tagging commit committers/authors for possible feedback @hurricos @Ansuel.

PS. Linking commits for reference:

Thanks!

The AP3935i STILL does not have good MAC configuration. If the ethernet link goes down, it's gone. It'll make you want to blow your teeth out. Source:

QCA9890 and QCA9990 both suck for environments with large numbers of clients, but <100 might be OK. QCA9990 is "less bad", but again, that ethernet issue will make you seek self-harm on the AP3935i.

You will not have space or RAM issues on either AP.

You will not have CPU limit issues on either AP. (You won't run out of CPU cycles in general.)

If you MUST use the AP3825i, consider swapping in one of these ... https://asiarf.com/product/wi-fi-6-11ax-2x2-dbdc-1800mbps-mini-pcie-module-mt7915-aw7915-npd/ ... or just hope and pray that the ath10k card serves you OK. It'll honestly probably be fine, it just happens to crash after a couple dozen days uptime at the worst possible time.

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@hurricos Thanks for your prompt reply Martin!

I didn't realize there are issues like you've described with either model, that's why I was looking at them.

Are Mediatek-based wifi cards better supported in OpenWrt right now? If you can recommend an OpenWrt issue-free wifi5/MIMO "enterprise" AP (meaning they are being offloaded on ebay in large quantities and can be had at $10-$15 per unit, like one of the 3825 listings I found was $35 for 5 units) instead I'd be grateful.

The issues I've described are prevalent to all ath10k devices, which is a huge chunk of OpenWrt 11ac-capable devices -- maybe 40%? 50%?

You'll have more issues with the AP3825i because it's older ath10k, which has worse support from Qualcomm / Candelatech. The AP3935i still has the other ethernet kinks to work out right now.

Are Mediatek-based wifi cards better supported in OpenWrt right now? If you can recommend an OpenWrt issue-free wifi5/MIMO "enterprise" AP (meaning they are being offloaded on ebay in large quantities and can be had at $10-$15 per unit, like one of the 3825 listings I found was $35 for 5 units) instead I'd be grateful.

I would be grateful if I could find those, too.

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I have deployed about 10-12 of the 3825's using the newer non-ct firmware instead of the default older ct version and have had zero issues.

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Thank you for replying. Which OpenWrt version? What's the average uptime? How many clients per radio maximum do you have throughout the day?

Currently on 23.05.3. The only time uptime restarts is for a power outage or an OpenWrt release upgrade - currently the last reboot was the 23.05.3 release back in March.

The maximum clients would be 20 or less as they are in a multi AP configuration using 802.11r and 802.11k.

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