net186-config/lib/20-community-downstream.conf

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function downstream_import_filter(int ASN) {
if !is_valid() then return false;
if bgp_path.last !~ DOWNSTREAM_ASN then return false;
pub_add_communities(ASN, 20);
pub_preprocess_communities();
return true;
}
function downstream_export_filter(int ASN) {
if !is_valid() then return false;
bgp_path.delete([4200000000..4225479999]);
if pub_process_communities(ASN, 20) then return true;
else return false;
}