Please look at my initial question. There you can see my debug.
So, why i couldn't hold on OSPF, because LDP tried to set the session between loopbacks interfaces and those were unreachable since side A had no another way to reach side B. In this case OSPF cames immidiatelly to try to create LDP session. If no LDP sess is created, OSPF maintains. But if transport addresses are changed to direct IP of physical interfaces (so LDP can create session without OSPF but via direct address), OSPF waits for LDP to come up as it should be.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...