"Bind" client to specific SSID vs "band steering"

[JW0914]

Your rationale is illogical.

@Frood42

I don't want to maintain two different SSIDs, BSSIDs and Passwords on Openwrt

You would only maintain two SSIDs, as I mentioned above (i.e. OpenWrt & OpenWrt 5G), passwords can be the same.

@Frood42

I don' want to maintain two (different) network connections on all clients

Why would you believe you need to maintain two different network connections on all clients?

• 2.4GHz only clients would be configured to only connect to the 2.4GHz network, whereas the 5GHz AC clients would be configured to only connect to the 5GHz network.
  • If one isn't going to make use of a client's 5GHz radio, why even bother buying a router with AC wireless?
    
    

@Frood42

I don't want to maintain two (different) network connections (instead of one(!)) on all clients in case of a password change

Moot.

@Frood42

Adding and deleting two lines of config is

• easier
• less effort
• more economic
• elegant

If you consider typing an additional three characters as not easy, more effort, less economical, and lacking elegance, I'd encourage you to research why it is there should a separate SSID for the 5GHz radio.

• It's your router, so if you'd like an inefficient setup that results in massive throttling of the throughput of devices on LAN, then by all means =]

[Frood42]

@JW0914

Your rationale is illogical.

Yes, it seems to be illogical for you.
Since this is not bringing any added value for the "community" it is ok for me to close the topic, especially since the initial question of the thread is answered.

[JW0914]

You can lead a horse to water, but you can't force it to drink...

[Frood42]

it is getting weird. please close / stop.