OSPF routers cannot form neighbor relationship due to a mismatch in Hello or Dead parameters.OSPF adjacency cannot be established with a neighbor router and mismatch in Hello or Dead parameter values is suspected.
3) If necessary, enable debugging of Hello packets and review the debug log
CBS1# routing-protocol ospf vap-group fw configure
OSPF routers cannot form neighbor relationship due to a mismatch in Hello or Dead parameters. Following parameters in Hello packets should match between neighboring routers:
Hello and Dead intervals
Authentication type and password
Stub Area flag
Subnet ID and Subnet mask