Need some clarification here - The default BGP export policy states that BGP will accept all active BGP routes. Does this include both IBGP and EBGP routes? I am experiencing an issue where my IBGP routes are not being exported to my EBGP peers. I have a full mesh IBPG topology,synchronization is off by default, OSPF is my IGP, all peers are up but the router configured for both IBGP and EBGP is not advertising the IBGP routes to its EBGP neighbor.
As the default policy, BGP always advertise any BGP routes to BGP neighbor. As you say, from IBGP does not advertise to EBGP, it's possible that routes are not active in IBGP (BGP with AD 170 is less prefer than OSP with AD 150 or 10). You can use the command advertise-inactive to override this default.