If you configure the redistribution of OSPF into BGP without keywords, only OSPF intra-area and inter-area routes are redistributed into BGP, by default. You can redistribute both internal and external (type-1 & type-2) OSPF routes via this command: #Router (config-router)#redistribute ospf 1 match internal external 1 external 2# Reference: https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/5242-bgp-ospf-redis. html