Setting Failover with 2 ISP on 1 router

RouterOS General
1

Hi,

I have 2 Internet Connecttion and i want to set set 1 primary & other as a failover. i have installed 3 lan cards 1as PUBLIC, 2nd as ISP2 & 3rd as LOCAL.
Now i need to set Public as Primary Gateway & isp2 as failover gateway.
Pls let me know if i have to set 2 gateways in IP/ROUTE.
How to set the failover, do i have to write a scripts or it can be done by ip routing.

Now i have installed a new lan card for the new ISP2 when i try to enable it through winbox, it gives error "could’nt change interface ISP2 - setting flag error(6). what is this error.


Pls reply me as soonn as possible.

2

you can do in another way.
set all interface up.
do network watch for the first ISP.
if UP do script1
if down do script2

script1:
set default gateway to ISP 1

script2:
set default gateway to ISP 2