misakanet-config/lib/20-community-downstream.conf

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function downstream_import_filter(int ASN) {
if !is_valid() then return false;
if delete(bgp_path, DOWNSTREAM_ASN).len != 0 then return false;
pub_add_communities(ASN, 20);
pub_preprocess_communities();
bgp_local_pref = 500 - bgp_path.len * 10;
pub_route_controller_specific();
return true;
}
function downstream_export_filter(int ASN) {
pub_process_path();
if !is_valid() then return false;
pub_add_communities(ASN, 30);
if pub_process_communities(ASN, 20) then return true;
else return false;
}