Hi,
On 16/04/15 16:43, Joel Brunenberg wrote:
[...]
So far so good. I would not want to interfere with the Prefixes in the
OSPF. I however have a BGP-session to another network and I am exporting
most of my routes to that session. I'd like to replace all the /32
routes for ptp links with the /24 they are taken from while exporting
routes for that BGP session.
Since it is totally irrelevant for the peer, which parts of the /24 are
available, I would just like to attract traffic to the networks I manage
as long as there are any contributing routes.
[...]
Another idea was a static route for the containing /24 that would be
exported via BGP while the /32 were filtered away. That however leaves
the /24 route in place even if there are no more /32 routes left. If
there is a way to change that, that would be great.
Yes, I would suggest using a static blackhole route with the large
aggregate range for the BGP connection, and also export that to your
local kernel routing table to automatically drop traffic for all
addresses that are currently not in use.
Is there a special reason why you would want to have the /24 being
removed entirely if none of the other connections is up?
Hans
