Routing Help !!!

RouterOS Beginner Basics
1

I am a New Microtik User, a friend of mine recently introduced me to Microtik. I downloaded the trial v6.0rc6 and have installed it on a pc with four 100 Mbps Lan Cards. It’s a testing phase.

The scenario is I have two Internet connection and they are as follows :-

WAN1
IP : 113.20.16.23
SUBNET : 255.255.255.240
Gateway : 113.20.16.20
DNS : 113.20.16.1, 113.20.16.2

WAN2
IP : 227.30.32.34
SUBNET : 255.255.255.240
Gateway : 227.30.32.30
DNS : 227.30.32.1, 227.30.32.2

I also have two LAN Networks.
Lan1 - 192.168.1.0 Network
IP : 192.168.1.1
Subnet : 255.255.255.0

Lan2
IP : 172.16.1.1
Subnet : 255.255.255.0

I want to Route Lan1 Via Wan1 and Lan2 Via Wan2.

Please help me how can I accomplish this. I have only learnt few basic commands. I don’t want to go in depth. I would just want this scenario to be working. Your help will be highly appreciated.

2

you want to nat this.. not route.. i suppose.


make a cople of firewall rute. src-nat action mascurade. src-address- the net you want to nat, out Interface - the wan Interface you want to use.

3

If you really just want to route (no NAT & no firewall) then you could place the WAN/LAN interfaces in 2 different VRFs (In IP / Route). Make 2 VRF entries and assign one WAN & LAN to each. Those interfaces will then only see routing entries for the other interfaces in their VRFs.

That is a simple method - there are plenty of more complicated ways which offer additional features.

4

Yes use nat for both wan’s
Go to “ip” then “firewall” then “nat”
Both masquerade as action
nat1.jpg
nat2.jpg
nat3.jpg

5

You don’t need NAT. All you need is 2 mangle rules for prerouting and 2 static routing rules for routing to 0.0.0.0/0 as described here: http://wiki.mikrotik.com/wiki/Load_Balancing_over_Multiple_Gateways

6

I don’t need load balancing that is not my requirement, after a long search I came to know about policy routing, I tried several examples but I can’t make it work.

My requirement is that I have two ISP Connections

ISP 1 IP Address : 10.0.0.2
ISP 1 Gateway : 10.0.0.1

ISP 2 IP Address : 10.0.1.2
ISP 2 Gateway : 10.0.1.1

LAN 1 IP Address : 172.16.1.1
LAN 2 IP Address : 192.168.1.1

I need to route LAN1 Via ISP 1 and LAN2 Via ISP2

I don’t need load balancing.

I have four different Ethernet cards installed and they are named as

LAN1 : 172.16.1.1
LAN2 : 192.168.1.1
WAN1 : 10.0.0.2
WAN2 : 10.0.1.2

Please help me, I tried several times and went through many tutorials but none worked for my requirement.

7

I hope this will be work for you

/ip route
add dst-address=0.0.0.0/0 gateway=113.20.16.20 routing-mark=to_wan1 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=227.30.32.30 routing-mark=to_wan2 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=192.168.1.1 distance=1 check-gateway=ping
add dst-address=0.0.0.0/0 gateway=172.16.1.1 distance=2 check-gateway=ping

/ip firewall nat
add action=masquerade chain=srcnat disabled=no out-interface=wan1 src-address=192.168.1.0/24
add action=masquerade chain=srcnat disabled=no out-interface=wan2 src-address= 172.16.1.0/24

/ip firewall mangle
add chain=input in-interface=wan1 action=mark-connection new-connection-mark=wan1_conn
add chain=input in-interface=wan2 action=mark-connection new-connection-mark=wan2_conn
add chain=output connection-mark=wan1_conn action=mark-routing new-routing-mark=to_wan1
add chain=output connection-mark=wan2_conn action=mark-routing new-routing-mark=to_wan2