protocols bgp <asn> neighbor <id> address-family ipv4-unicast default-originate route-map <map-name>
Enables or disables forwarding of the default route to a BGP neighbor.
The default route is not distributed.
- asn
- The number for the AS in which this router resides. The number ranges from 1 through 4294967295.
- id
- The IPv4 or IPv6 address of a BGP neighbor.
- map-name
- Specifies a configured route map to be used when advertising the default route.
Configuration mode
protocols {
bgp asn {
neighbor id {
address-family {
ipv4-unicast {
default-originate {
route-map map-name
}
}
}
}
}
}
Use the set form of this command to enable the router to advertise the default route 0.0.0.0 to this BGP neighbor. This route can then be used by the neighbor to reach the local router if no other routes are available.
If a route map is specified, the default route is advertised if two conditions are satisfied:
- The route map includes a match ip address clause.
- A route exists that exactly matches the IP access list.
Route maps are configured using protocols bgp <asn> neighbor <id> local-as <asn>.
Use the delete form of this command to disable forwarding of the default route or to delete a route map.
Use the show form of this command to view BGP neighbor default route origination settings.
The inverse mask for the source field is applied to the prefix before the comparison with the source. The inverse mask for the destination field is applied to the net mask of the prefix before the comparison with the net mask as specified in the destination field.
Effectively, the prefix must match the source with application of inverse mask of the source field. And the net mask for the prefix must match the destination with application of inverse mask of the destination field.