I am reading that running multiple SSID degrades wireless bandwidth - but nowhere do I see it mentioned by how much
Are there any quantitative data that shows:
iw phyX info | grep 'valid interface combinations' -A 3
Where phyX == your interface
I see:
valid interface combinations:
* #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1, #{ IBSS } <= 1,
total <= 2048, #channels <= 1, STA/AP BI must match, radar detect widths: { 20 MHz (no HT), 20 MHz, 40 MHz }
What do those mean? I can have upto 2048 APs on the same radio?
You can have up to 8 APs on the radio.
Each additional SSID eats up your channel utilization, which you want to keep low: https://wyebot.com/blogs/shouldnt-deply-3-ssids/
From my last thread (How does multiple SSID affect wireless bandwidth?) I learned that multiple SSID affect wireless bandwidth negatively and it makes little sense to have more than 3 SSID effective on the same radio.
However, if I had a "Party" SSID on the same radio that broadcasts Home and Iot, but I would enable this Party SSID only when I have special occasions at the home but it's always disabled otherwise, will I be affected by the overhead of this "Party" SSID all the time or only when I enable it?
No need to make duplicate posts.
A radio works/operates only when it's on and transmitting (i.e. enabled). And obviously, only something transmitting can take space on the airwaves. A disabled SSID hence takes no space on the channel. I hope this helps answer your question.
@psherman - can we merge the 2 threads?
better option to segregate your wifi than using multiple ssid for different vlans, is to use wpa_psk_file which uses single ssid with different passwords, and each password connects to a different vlan.
you can start your search from this thread
What a click-bait that turned out to be. It doesn't actually say why you shouldn't deploy more than 3 ssids, it's more like: nobody would ever need more than 640Kb of RAM.
It definitely lacked the depth that the other two links have but my takeaway from it was:
Each AP has a 7-10% overhead, so by the 3rd AP you're at 30% overhead and the quality of the connection is very poor at that point, so think of doing something else
Each AP has a 7-10% overhead, so by the 3rd AP you're at 30% overhead and the quality of the connection is very poor at that point, so think of doing something else
Then not only does it lack depth, it's wrong:
to reduce overhead, it would be best to deploy no more than 3 SSIDs
If any device needs additional control, establish policies on the WLAN that identify the characteristics of devices and limit network access without requiring an additional SSID
Why does your 2.4G SSIDs have overhead in 8-10% while your 5G SSIDs have half that overhead?
Newer wifi standards.
What are you comments about this from https://wyebot.com/blogs/shouldnt-deply-3-ssids/
None, just empirical evidence.
What wifi standards are your 2.4G APs on vs your 5G APs?
This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.
