Dell PowerEdge M805 - Manual (Page 711)

OSPF Commands 717
Default Configuration
Enabled is the default configuration.
Command Mode
Router OSPF Configuration mode
User Guidelines
If all OSPF routers in the routing domain are capable of operating according to RFC 2328,
OSPF 1583 compatibility mode should be disabled.
Example
The following example enables 1583 compatibility.
console(config-router)#1583compatibility