Tue Sep 22 11:28:09.917 UTC
RP/0/RP0/CPU0:R4#configure

Tue Sep 22 11:28:10.106 UTC
RP/0/RP0/CPU0:R4(config)#router ospf 1

RP/0/RP0/CPU0:R4(config-ospf)#compatible ?

                                 ^
% Invalid input detected at '^' marker.
RP/0/RP0/CPU0:R4(config-ospf)#compatible 

                                 ^
% Invalid input detected at '^' marker.
RP/0/RP0/CPU0:R4(config-ospf)#abort