Hi Hope someone can point me in the right direction.

I have a RB450 (updated to RouterOS 5.20)

2 LANs (172.16.1.0/24 (Main LAN) and 172.16.99.0/24 (Other LAN))

I would like the machines on the two LANs to be able to connect to each other through the router.

I have done a factory reset of the routerboard using winbox and the first time I connect I have said don't do the default config (I have also tried letting it do the default config).

Then added the two interface addresses:
I then added what I think is a firewall rule to allow forward between the two (i'm guessing this is where I am missing the point !) : (there are no other firewall rules)

Then plugged a network cable into ports eth2 and eth5 of the routerboard from the respective network switches.

on a machine (172.16.1.141) on the 172.16.1.x network I have added a route
route add 172.16.99.0 mask 255.255.255.0 172.16.1.251

on a machine (172.16.99.20) on the 172.16.99.x network I have added a route
route add 172.16.1.0 mask 255.255.255.0 172.16.99.251

from the machine (172.16.1.141) on the 172.16.1.x network I can ping 172.16.99.151 (the other port on the router) and this works fine but I can't ping an actual machine (172.16.99.20).

If some one could help me I would be very grateful.

As you can tell I am RouterOS Newbie!!

Thanks

You need to add 2 routes:
dst address 172.16.1.0/24 gateway ether2 (optionaly you can put pref source 172.16.1.251)
dst address 172.16.99.0/24 gateway ether5 (optionaly you can put pref source 172.16.99.251)

Regards

Thanks jadu

That has worked, when I added the IP addresses to the two ports originally, two routes very similar to the two you suggested where created automatically, so I assumed they did not need to be manually added.

So you can see there is now two of each, is this correct ?
Thanks

The routes that were added automatically when you've added the manually ones they will be deleted as well when you delete the manually routes.

This topic is important and useful

I have bridge that I have assigned ip 172.16.2.254/24 and ip 172.16.1.254/24
The solution posted above always works when dealing with individuals ether ports but how comes it doesn't work when using a bridge? I still cant ping devices from the other network. I can only ping 172.16.1.254 and 172.16.2.254 only.
I have tried to put the static routes 172.16.1.0/24 gateway:172.16.1.254 and 172.16.2.0/24 gateway:172.16.2.254 but still cant ping across.
Kindly assist.

Hi i have RB2011UiAS and i configured it as the following:
ether 1 --> WAN 1
ether 9 --> WAN 2
ether 2 --> lan (192.168.10.0/24)
ether 3 --> lan (192.168.20.0/24)
ether 4 --> lan (192.168.30.0/24)
......
this is my route:

# DST-ADDRESS PREF-SRC GATEWAY DISTANCE
0 A S 0.0.0.0/0 6.10.15.25 1
1 S 0.0.0.0/0 192.168.1.1 1
2 ADC 6.10.15.24/29 6.10.15.26 ether1 0
3 DC 192.168.1.0/24 192.168.1.200 ether9 255
4 ADC 192.168.10.0/24 192.168.10.1 ether2 0
5 ADC 192.168.20.0/24 192.168.20.1 ether3 0
6 ADC 192.168.30.0/24 192.168.30.1 ether4 0
7 ADC 192.168.40.0/24 192.168.40.1 ether5 0
8 DC 192.168.50.0/24 192.168.50.1 ether6 255
i marked the WAN interfaces to separate the internet between my networks

I have a web service working on 192.168.10.10 ip address and i want to make it reachable from 192.168.20.0 network.
Thanks