to simplify my pb i want to know if it is possible to prioritize the information of cost compared to the fact of being directed connected.
I have 4 routers connected in "circle" and i use OSPF in this wan (A-B-C-D-A). The 4 routers are connecte with microwave, each connection is an E1 connected to a serial interface. I have pb on the link C-D, that is not stable. So i put a cost of 1000 on this link and pass through others links.
The pb is that, even if i put this cost, all flow between C and D are passing through this link.
Have you got an idea (exept changing OSPF by BGP) to solve this problem, and keep the link C-D only in backup mode.
what is the destination address of your traceroute ?
be aware that if you are on RC and you try traceroute to RD's ip address in link C-D what you see is correct.
to verify your change has been successful you need to try to reach a ip address that is not on Link c-d subnet.
for example if
10.1.1.3 is a loopback in RD advertised in OSPF the traceroute from RC should make all the ring without using the direct link.
This is what you should check
Hope to help