Hello. I need to have two link (ethernet) on my router. One must be a primary link and if it fails, all traffic must forward to backup link, and if primary link comes active, traffic must redirect again on this links.
Is there any solution without scripting or OSPF?
Sorry for my poor English 
Simplest - if not most overhead effecient:
Setup primary link on one /30
Setup secondary link on another /30
setup 2 static routes for EoIP remote end-point with different weights.
The EoIP will then dial on the primary path. If that fails it will switch to the secondary path. The fail back to the primary path will ‘sometimes’ happen automatically but a netwatch is normally the easiest there.
Regardt
Why you don’t want ospf? If you have two link you can use them in load sharing instead of active/standby solution with static route with different weight (this is the solution if you don’t want to use ospf!).
Bye
Luciano