Back in previous topic, I really did not mean anything bad. I am aware of all issues and also I am happy to help if my help is appreciated.
So If I buy the cAP-AC I can have three ssids on the 2.4gh network and one ssid on the 5Ghz network and all on separate VLANs.
That is right. You can.
Just one thing which you may not realize now - each physical radio can operate only ONE frequency at a time. This fact has two consequences:
1) To operate both bands at the same time, device must have two separate physical radios. cAP-AC and hAP-ac2 have each 2 radios. One for 2GHz band and second for 5GHz band so you can operate both bands at the same time. (Some devices like Groove52 have one radio which can switch bands but operate only one at a time. )
2) Multiple SSIDs using same radio will use same frequency. In default setting, you will see two wireless interfaces - wlan1 and wlan2. Those represent real physical radios. When you add VirtualAP, it will act as a slave of selected physical radio. Some setting which affects hardware (frequency,power, channel width) are unavailable in VirtualAP
(this is not something surprising, just important to keep in mind. You would see same limitation in UniFi system)
I am afraid you will not find mention of #ssid and #vlan limitations in any literature but if you have any specific question, I will be more than happy to help you. I have plenty of both Mikrotiks and Unifi devices around so I can show you difference in settings etc..
for example here:
This is a table/list of all wireless interfaces in one of my hAP ac2
Firstly, notice there are "wlan2-pk" and "wlan5-pk". those are physical radios (as well as wireless interfaces). First is 2GHz, second is 5GHz. Both are actually set up same way, so the SSID, security profile and VLAN is same. With this approach, users add just one wifi and their phones/computers will automatically connect to best available option. (if 5GHz is too weak, it will switch to 2GHz automatically).
Then, there are "wlan2v-jac" and "wlan5v-jac". Those are virtual interfaces. Each is slave for corresponding physical radio so it operate on same frequency as its master. Same as previously - those two have same settings but operate on different VLAN (I prefer to add vlan as suffix to interface. Then it is clearly visible if it goes to PK or JAC network)
Lastly, there are "test1" and "test2" virtual interfaces. Those are slaves to "wlan2-pk" so they operate on same frequency as wlan2-pk but obviously are for different purpose (actually i did not even connect them to the internal bridge so they do not provide network connection)
You can imagine it this way:
Hope this helps
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