spoke-router# sh ip ospf neigh

Neighbor ID     Pri State             Dead Time Address       Interface            RXmtL RqstL DBsmL
1.1.1.2         254 Full/DR           35.184s   10.10.10.2    gre1:10.10.10.3          0     0     0

secondary-hub# sh ip ospf neigh gre1

Neighbor ID Pri State           Dead Time Address         Interface            RXmtL RqstL DBsmL
1.1.1.1     255 Full/DR         36.513s   10.10.10.1      gre1:10.10.10.2          0     0     0
1.1.1.3       0 Full/DROther    35.387s   10.10.10.3      gre1:10.10.10.2          0     0     0

primary-hub# sh ip ospf neigh gre1

Neighbor ID Pri State           Dead Time Address         Interface            RXmtL RqstL DBsmL
1.1.1.2     254 Full/Backup     37.067s   10.10.10.2      gre1:10.10.10.1          0     0     0