Policy Routing in RouterOS 3.x

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Using mangle is not required for policy (aka static) routing with RouterOS 3.x. This is an example of routing between networks without using mangle.

The example network setup:

File:RouterOS 3 policy routing example network.png


Static routes and rules must be added to tell router1 that the 192.168.22.0/24 subnet is accessible via router2 and to tell router2 that the 192.168.20.0/24 subnet is accessible through router1.

Icon-note.png

Note: For this particular example, adding the /ip route rule is not required on neither of the routers and does not achieve anything. --Route 16:14, 28 December 2009 (UTC)


On router1:

/ip address add address=192.168.20.1/24 interface=ether2
/ip address add address=192.168.21.1/24 interface=ether1
/ip route add dst-address=192.168.22.0/24 gateway=192.168.21.2 disabled=no
/ip route rule add dst-address=192.168.22.0/24 action=lookup table=main

yields the following routing table from /ip route print

#      DST-ADDRESS        PREF-SRC        GATEWAY-STATE GATEWAY                       DISTANCE INTERFACE              
0 ADC  192.168.20.0/24    192.168.20.1                                                0        ether2                 
1 ADC  192.168.21.0/24    192.168.21.1                                                0        ether1                 
2 A S  192.168.22.0/24                    reachable     192.168.21.2                  1        ether1  


On router2:

/ip address add address=192.168.21.2/24 interface=ether3
/ip address add address=192.168.22.1/24 interface=wlan1
/ip route add dst-address=192.168.20.0/24 gateway=192.168.21.1 disabled=no
/ip route rule add dst-address=192.168.20.0/24 action=lookup table=main

yields the following from /ip route print

#      DST-ADDRESS        PREF-SRC        GATEWAY-STATE GATEWAY                    DISTANCE INTERFACE          
0 A S  192.168.20.0/24                    reachable     192.168.21.1               1        ether3             
1 ADC  192.168.21.0/24    192.168.21.2                                             0        ether3             
2 ADC  192.168.22.0/24    192.168.22.1                                             0        wlan1              


Now client1 can ping client2.

See also

Policy Routing in RouterOS 2.9.x