OSPF over DMVPN
I am having the trouble with the advanced lab OSPF over DMVPN, i have been through and configured it as i would expect it to be, and i have then checked my config against the expected config which is the same.
The problem I am seeing is that R5 the hub router is suppose to be the DR router due to it having the highest loop back address but every time i bring the neighbors online every other router other than R5 is elected the DR. Test this I set up the tu0 interface on R5 to have a priority of 255 to try and ensure that it is the DR, this made no difference, R3 was Elected DR and R5 was elected BDR, so on R3 i shutdown the tu0 interface thinkning R5 would take over, to my shock it didnt the DR moved to R2.
Please could someone assist with some advice as I am not sure if this is just the rack or i am doing something wrong. given my checks against the INE content it should work.