how many maximum connected users can RBwAP2nD allow at the same time? same question for RBcAPL-2nD.
i have 4 RBwAP2nD as access point only, and CSS326-24G-2S+RM as the main router with 3 WAN (100Mbps each, using load balancing, LAN 172.20.x.x/22). 30 users can still connect, above 50 users, users have problem connecting.
Well, yes it would be best to keep less than 40 users connected… you must use a second AP and with the help of Capsman you can Load Balanace these 2 APs…
By the way, CSS should be used as a Switch…
as i’ve said earlier, i’m using 4 outdoor access point (RBwAP2nD). Just added 2 more ceiling access point (RBcAPL-2nD), beyond 50 users, have trouble connecting to wifi (1 ssid).
sorry, mistyped, it not CSS but CRS326-24G-2S+RM as the main router
Same applies as per @Zacharias, rather get an additional device for the routing, i.e. Hex
are u saying Hex is better than CRS326-24G-2S+RM for routing? chose CRS326 is because of License Level 5 and have more ports.
my problem connecting to wifi is outdoor pool area (10-400 users). if i go to office or other area with same ssid, i had no problem
So many things to check with wifi setup. I have a similar setup and no problems. But did quite some tuning to get there.
400 users peak … must be over a larger area around the AP.
You use wAP and cAP , they have a good spectrum shape for client devices in the proximity. You only have the 2.4 GHz spectrum with the 2nD devices.
And proximity is what you need. Devices must communicate at a high speed , because your air-time (the time that you can communicate) is an important limitation.
One device, a bit far away with a signal of -80 dBm , and a closeby device with -55dBm will have different speeds. Typical 6 Mbps and 110 Mbps (2 spatial streams)
Without airtime-fairness mechanisms they both will get the same number of packets to transmit, the slower will use 15 times longer than the fast one.
If 100 devices are in the fast area, and all want to talk, you have 1 Mbps per device, less the overhead.
If 100 devices are in the slow area, then you have 60 Kbps per device, less the overhead.
Well quite some airtime goes to the AP beacons, they are transmitted at 6 Mbps (even 1 Mbps if 802.11b is enabled), 10 packets per second per SSID.
15 SSID’s (e.g. 5 AP’s with 3 SSID each) with 802.11b supported take 50% of the available airtime!
But if nobody else uses the wifi spectrum, your have 3 times this capacity: once in channel 1 , 6 and 11.
Any distant wifi device that transmits and is received above the noise level (above -96dB?) will waste airtime. Your devices will WAIT for it. The amount of your transmit power does not matter, your devices will wait.
Your top at 400 users is a lot for 3 channels. Hope they all are at good speed. Spread your AP’s wisely to achieve that, and reduce the transmitpower of the AP not to attract distant devices. At the swimming pool most will be smartphone and some tablets. Smartphones send at 7 dBm , tablets at 10 to 12 dBm. An AP at 10 dBm would be smart. Devices will roam or disconnect faster.
CAPsMAN might help if you have 2 adjacent AP’s and you want to spread the number of connections over these AP’s.
You might reuse the indoor as outdoor channels, but they will still wait for each other. You do not want an outdoor user to stick to the indoor AP and vice versa. So keep the TXpower low enough.. Setting a minimal acceptable signal strenght in the access list could help, but user experience testing is recommended.
thx for the reply…i will experiment with 7 outdoor and 4 indoor access point and use Capsman and see in a week time
Excellent, tell me how it goes. There are more things to tune . If however you have to buy new AP’s, you better start using 5 GHz capable devices like wAP ac and cAP ac. 5 GHz give you at least 8 more channels and will normally have much less interference from other devices.
Measuring the other 2.4 GHz (and eventually 5 GHz) activity is a must before you can make a selection. The Mikrotiks are good measuring probes with “Freq. Usage”, “SCAN” and “Snooper” on the wifi interface. In the CLI there is also “interface wireless wlan1 spectral-history”, as dedicated task (no clients) for the interface.
okay, bought RB450Gx4 as the main router…CRS326-24G-2S+RM as main switch. added more outdoor AP (total of 15 RBwAP2nD) for pool area.
haven’t used capsman yet. Have 3 WAN at 100Mbps each, using load balancing.
After changing to RB450Bx4, all hotspot clients are getting max at 12Mbps. While a connected computer to ether5 RB450Gx4 and binded, can get up to 100Mbps…but ALL hotspot clients kept disconnected randomly, including the connected computer. Never been stable…Pinging on terminal of main router to 8.8.8.8 have execelent result, no drop at all.
here is the config:
am i missing something?
rb450gx4.txt (3.05 KB)
Missing something? Your wifi design?
I understand you now have 19 AP’s in the 2.4 GHz band. They probably all can receive each other. So your potential for wifi transmission is all within one transmission cel.
What are your wifi settings? What band encoding do you use (only-N or B/G/N or …) What channels do you use?
Most importantly : What do you see in de (background) scan of a WLAN interface? This would learn a lot about the wifi capacity and usage.
Is the list of AP different one side of the pool, versus the other end? Are there “hidden” nodes is the relevant question.
Many AP’s with non-optimal parameters can cause a lot of overhead (http://www.revolutionwifi.net/revolutionwifi/p/ssid-overhead-calculator.html)
okay, i’ll make it simple…1 Rb450gx4 as main router, 1 main switch .CRS326-24G-2S+RM, 1 AP RBwAP2nD as Hotspot.
2 people connected to AP, 1 PC connected to main router.
Result : Computer can have speed of 95-100Mbps, while 2 clients via AP can go from 2-12 Mbps. All client randomly disconnected from internet, can’t have stable connection in 10 minutes, sometimes 15 minutes. On Winbox terminal, it shows no signs of packet loss. Same result as with 19 AP’s.
Wifi settings on AP is: channel width 20Mhz, Band 2Ghz-G/N, Channel between 1, 6, 11. Security none