Unknown routing protocol Error Message

"Unknown routing protocol" Error Message

This error message is generated when the router ospf 1 command is typed on a router to configure OSPF. This message means that the software or the hardware does not support OSPF. Usually low-end platforms, such as 1000 and 1600 series routers, need a special image (that is, the Plus feature set) to run OSPF. Some low-end platforms, such as 800 series routers, do not support OSPF.