Hello!
On 5/10/23 11:13, William wrote:
Hi All,
I've been digging around trying to find a nice way of doing it but can't
seem to find a valid answer.
Is there a way to use a prefix set to create static routes?
No, this is not possible and implementing this would be surprisingly
difficult as the prefix sets are implemented as a compressed trie
optimized for fast lookup and not enumeration.
Also imagine this:
define my_route_set = [ 2001:db8/32+ ]; # note the plus sign
protocol static { ipv6; route my_route_set via 2001:db8::dead:beef; }
This short code would generate approx. 7.9e28 routes.
If you could elaborate more precisely what you are trying to achieve as
a whole result, we may try to help you find how to do it in the way BIRD
is designed.
Maria
Ideally though being able to specify the set as the route to be added
would be ideal. An alternative of something like a "for" loop that
iterate through the set and adds the routes to the table would suffice.
For example:
define my_route_set = [ 10.1.2.3/24, 172.20.4.2/24, 10.200.0.0/23 ];
protocol static route_set {
ipv4 {
table Some_Routes;
}
route my_route_set via 192.168.55.2; # downstream static gateway
}
The prefix set is used to define the subnets for a remote node and used
in import/export filters via BGP upstream. Being able to re-use the set
without having to split it out would be hugely advantageous.
I want to avoid having the neighbour device provide the routes via a
routing protocol where it can be avoided.
TIA.
Regards,
William
