You have received a default route through BGP from your ISP and you want to redistribute it into
OSPF.
Which method will accomplish this?
A.
Apply an export policy to OSPF that exports the default route.
B.
Apply an import policy to OSPF that imports the default route.
C.
Apply the default-network command to OSPF.
D.
Apply the redistribute-igp command to BGP.
Explanation:
Policies that control how the software sends routes from the routing table are named export policies. The software applies
export policies as it exports routes from the routing table to dynamic routing protocols or to the forwarding table. Only active
routes are available for export from the routing table. Thus, although an export policy can choose which active routes to export
and can modify attributes of those routes, it cannot cause the exportation of inactive routes.
0
0
For example, suppose you have an OSPF route (preference 10) and a BGP route (preference 170) for the same prefix. An export
policy determines whether to send the active OSPF route and modifies attributes of the route as the software sends it.
However, the export policy cannot cause the software to send the inactive BGP route.
0
0