Iam8up Blog

*Create bridge1
*Create fakebridge
*Create eoip-tunnel1
*Put eoip-tunnel1 and ether1 in bridge1
*Assign the four IPs in the diagram to their respective interfaces
*Set bridge or station modes – get the two wireless links up; make life easier by connecting wlan1 to wlan1 and wlan2 to wlan2; use radio-name to identify them
*OSPF on primary side

/routing ospf set redistribute-connected=as-type-1 router-id=172.31.254.1
/routing ospf interface add cost=100 interface=wlan1
/routing ospf network add area=backbone network=172.31.254.0/24
/routing ospf network add area=backbone network=172.31.255.0/24

*OSPF on secondary side

/routing ospf set redistribute-connected=as-type-1 router-id=172.31.254.2
/routing ospf interface add cost=100 interface=wlan2
/routing ospf network add area=backbone network=172.31.254.0/24
/routing ospf network add area=backbone network=172.31.255.0/24

*Create eoip tunnel between 172.31.253.1 and 172.31.253.5 (fakebridge). This is the magic that makes it all come together.

SRC: http://blog.butchevans.com/2008/10/using-ospf-to-create-full-duplex-behaviour-for-wireless-links/