Urgent Help Please!!!!

Got a new apartment for our start-up company, and subscribed to 10 Mbps dedicated real IP internet speed, now we have to distribute the internet connection to 70 employees, we decided to hire a network specialist although I have little experience in networking I did CCNA, I told the I.T guy that i want Mikrotik vendor, so he bought the fellowing:

5 Routers Model: MikroTik RB951u-2hnd

1 Switch Model: MikroTik RB2011Ui AS-RM

Here is the Topology:

Here is the Ping resualt when pinging from my computer to the default gateway " Main Router"

Here is the map of the apartment the green area is where the 70 people are, there are no walls between employees open space.

What i want you from you guys is to please help us, we wasted a lot of money we hired 3 guys and no one helped us, in our country there are not too many experts in networking, the cabling is wrong + configuration everything is messed up please help us to re-build our topology and connect them together correctly

That description “Router (a real router)/Firewall” sounds like your seven MikroTik routers (RB2011 is also router) are not real routers. Not the best start in MikroTik forum. :wink:

Anyway, if you expect useful advice, it would be wise to describe your goals. So far it looks like you didn’t need RB2011 at all and six AP’s (I assume you use RB951s as such) may be overkill too for one room. It also looks like you want to connect 70 people using mostly wireless, which may work for only 10Mbit line, but still using wires would be preferable (unless they use only devices without ethernet). As for config, you can just bridge everything together and let your “real router” handle everything. Or write about your special needs, if you have any.

I totally agree with Sob.
Regarding the fact that your APs (at least the routers which are used as APs) are 2.4GHz only and there are only three really usable channels, this is the worst scenario you could face.
I’d stick with maximum three of those, better just two. One channel (out of 1,6,11) each. Set the max-station-count to 40 or 50.
Use the 2011 as CAPsMAN, then you do all your config once and are safe(ish) for future growth.
The first step would be to lower tx-power of yor APs down by factor 10 or more. In this deployment I’d suggest TX power to be somwhere in the 10…13dB range.
If you have the chance, swap the 5 (or six as in your drawing) 951 to two wAP ac. There’s much more space and free air in the 5GHz band. Your employees will notice from the first second they associate with the AP.
The ping jitter pattern you posted is, from my experience, a good indicator of co-channel interference.

-Chris