Lets says I have 3 routers  : R1, R2, R3... All three communicate with OSPF (with athentication and all) ... R1 <--> R2 <--> R3

Now I have R4 on one side of R1 ...

R4 <--> R1 <--> R2 <--> R3 .... But R4 is not using OSPF.

My problem is that it can only ping the one interface of R1 it is connected to..

I want it to be able to ping any interfaces of others but WITHOUT OSFP...I tried static route but it did not work...

How should I approach this  ?

Lets says I have 3 routers: R1, R2, R3... All three communicate with OSPF (with authentication and all) ... R1 <--> R2 <--> R3

Now I have R4 on one side of R1 ...

R4 <--> R1 <--> R2 <--> R3 .... But R4 is not using OSPF.

My problem is that it can only ping the one interface of R1 it is connected to.

I want it to be able to ping any interfaces of others but WITHOUT OSPF...I tried a static route but it did not work...

How should I approach this?