Routerboard 750 Routing

RouterOS Beginner Basics
1

Hi

I just bought a routerboard 750 and want to set it up for routing purposes only…
It will simply be used to connect another network, network “B” (172.30.8.55) to my network, network “A” (10.200.221.1)
The mikrotik ip address will be 10.200.221.1 and the ip address that network “B” (172.30.8.55) needs to connect to is 10.200.221.10

I’m using webbox to log into the router and want to setup the routing.
I’m new at this so can anyone tell me what to do?
I tried reading the manual but like i said i’m new at this and don’t realy understand everything..

Any advice would greatly be appreciated.

Thanx.

2

On router A you need to add route to reach network B via 10.200.221.10

3

I only have 1 router with 2 different networks… Network B needs access to Network A.
I tried setting it up as the maual says with no luck. I can’t ping my router or any machine on network A from network B?

4

I would recommend to use Winbox, as currently it offers all configurations options via Graphical User Interface.
http://wiki.mikrotik.com/wiki/Winbox

IP addresses are added via IP —> Address
Gateway is added via IP —> Route
Maybe you will need masquerade, which is added via IP —> Firewall —> NAT

5

I logged in using winbox and tried setting it up like you said, but still no luck.
Any chance you can maybe give me a bit more detail…i’m not that clued up with networking.

6

Fhillip, could you perhaps give us more information on how your networks are connected to each other. A network diagram is preferred.
Usually a “network” refers to more than just 1 IP address, instead its an IP address range like 172.30.8.0 - 172.30.8.255 (written in CIDR notation it would be: 172.30.8.0/24).

Can you ping devices on both network A and network B with the Ping tool from within Winbox? Once you can ping devices from the router, then you can proceed setting up the routing/NAT (masquerading) on the router.

For the networks to be able to access each other, they both have to use the MikroTik as the gateway OR the gateway that they’re currently using should have a static route pointing to the MikroTik if the destination network is the other network.

eg.

  • Setup:
    • Network “A” (10.200.221.0/24) is connected to the MikroTik eth0 and their gateways all point to 10.200.221.1 (which is the IP address on the MikroTik eth0).
    • Network “B” (172.30.8.0/24) is connected to an Access Point set up as a router with the IP address of 172.30.8.1. Again, all the devices on this network have their gateway set to 172.30.8.1.
    • The Access Point is connected to the MikroTik on eth1, with eth1 having an IP address of 172.30.8.2
      For this setup to work, you’ll have to:
    1. add a static route on the Access Point such that all traffic destined for network “A” (route with dst-address=10.200.221.0/24) must go through the 172.30.8.2 gateway
    2. Add a static route on the MikroTik such that all traffic destined for network “B” (route with dst-address=172.30.8.0/24) must go through the 172.30.8.1 gateway
7

Hi. Thank you for the detailed description!..It finaly works!! lol
I had my routing setup fine, but i forgot to insert the default gateways on the machines…
The way you stated it in your description makes perfect sense now!..

Thanx a mil!

Keep well