Mikrotik rb750r2 with cisco wireless infrastructure

RouterOS Beginner Basics
1

Hello Expert’s?

I’m newbie on Mikrotik. We have mid sized public wifi infrastructure. Wireless core switch, access switch, WLC and APs. This is connected to TP link router and everything working normal. But i need to change our router to Mikrotik.
Mikrotik LAN ip address is 192.168.0.1 with dhcp. Internet normally working with clients PC.s and other directly connected devices to Mikrorik.
But our Public wifi clients take 10.10.. They cant access to 192.168.0.1(LAN ip). How to write routes, NAT, firewall and any other things? I’m only with WebFig.
Anyone please help me? Later i will upload our diagram. Thanks

2

Succesfully ping to 192.168.0.1 from Cisco 3750 and Cisco 2960. But cant ping 192.168.0.1 from Wifi clients(mobile device and laptops). Therefore no internet access for my wifi clients.
Do you guys know which Route, firewall rule, Nat Rule etc on MikroTik RB750R2?
Thank you very much.

3

Probably a few static routes:

/ip route
add dst-address=10.10.10.0/24 gateway=192.168.0.2
add dst-address=10.10.20.0/24 gateway=192.168.0.2
add dst-address=10.10.30.0/24 gateway=192.168.0.2
add dst-address=10.10.40.0/24 gateway=192.168.0.2
add dst-address=10.10.50.0/24 gateway=192.168.0.2

Hopefully NAT rules don’t interfere …

4

Thanks for your reply. Let me try this.

5

This worked for me. I was wrong. Can you explain why add 192.168.0.2 route list? 192.168.0.2 is Core switch interface. Route list depend from this interface?

Thank you very much.

6

The reason is how IP connections work: any device with IP address configured can connect directly to devices within IP subnet … which is combination of IP address and network mask.
In your case you have at least two IP subnets (192.168.x.y and 10.q.w.z). You did not specify subnet masks, according to original IP address space division (which specified class A, B and C subnets) these two subnets would be 192.168.0.0/24 and 10.0.0.0/8. However, nowadays it’s customary to divide also 10.0.0.0 into smaller subnets (so called classless subnets) and according to IP addresses you indicated on your diagram (mostly based on addresses assigned to Cisco 3750X) I assumed you actually use 4 subnets in that address range: 10.10.20.0/24, 10.10.30.0/24, 10.10.40.0/24 and 10.10.50.0/24.
So in total you’re running 5 IP subnets. If my assumption about used IP subnets is correct, then your existing Cisco network already uses the 3750X as gateway between different 10.10.x.0/24 subnets.
If my assumption is wrong, then you have to adjust the route settings on MT to match actual IP subnets.

Now, if an IP device wants to communicate with another device outside its own IP subnet, it has to use gateway which can either connect to both IP subnets directly (which is the case with Cisco 3750X) or has information about further gateways needed to establish the wanted connection.
And this is called routing.

In your particular case, RB doesn’t have direct connectivity to any of 10.10.x.0/24 subnets, but there’s another router (Cisco 3750X) which does. So one has to set up RB with a few routes using 3750X’s as gateway.