Default route policy actions

Each routing protocol has default behaviors for the import and export of routing information. Table: Default route policy actions shows the default behavior for each routing protocol.

Table: Default route policy actions
Protocol	Import	Export
OSPF	Not applicable. All OSPF routes are accepted from OSPF neighbors and cannot be controlled via route policies.	Internal routes: All OSPF routes are automatically advertised to all neighbors. External routes: By default, all non-OSPF learned routes are not advertised to OSPF neighbors.
IS-IS	Not applicable. All IS-IS routes are accepted from IS-IS neighbors and cannot be controlled via route policies	Internal routes: All IS-IS routes are automatically advertised to all neighbors. External routes: By default, all non-IS-IS learned routes are not advertised to IS-IS peers.
RIP	By default, all RIP-learned routes are accepted.	External routes: By default, all non-RIP learned routes are not advertised to RIP peers.
BGP	By default, all routes from BGP peers are accepted and passed to the BGP route selection process.	Internal routes: By default, all active BGP routes are advertised to BGP peers. External routes: By default, all non-BGP learned routes are not advertised to BGP peers.