92 lines
2.7 KiB
Plaintext
92 lines
2.7 KiB
Plaintext
function pub_add_communities(int ASN, int type) {
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# DIRECT PEER
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if (type=0) then {
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bgp_large_community.add((LOCAL_ASN, 110, 0));
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bgp_large_community.add((LOCAL_ASN, 110, 2));
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# PEER via IX
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} else if (type=1) then {
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bgp_large_community.add((LOCAL_ASN, 110, 0));
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bgp_large_community.add((LOCAL_ASN, 110, 1));
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j
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# UPSTREAM
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}else if (type=10) then {
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bgp_large_community.add((LOCAL_ASN, 110, 10));
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# DOWNSTREAM
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} else if (type=20) then {
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bgp_large_community.add((LOCAL_ASN, 110, 20));
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}
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# Finished (LOCAL_ASN, 110, *);
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if (LOCAL_ASN, 120, POP) ~ bgp_large_community then bgp_large_community.add((LOCAL_ASN, 120, POP));
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if (LOCAL_ASN, 121, REGION) ~ bgp_large_community then bgp_large_community.add((LOCAL_ASN, 121, REGION));
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# Finished (LOCAL_ASN, 120~130, *);
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}
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function pub_preprocess_communities() {
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if (LOCAL_ASN, 115, 1) ~ bgp_large_community then bgp_path.prepend(bgp_path.last);
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if (LOCAL_ASN, 115, 3) ~ bgp_large_community then {
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bgp_path.prepend(bgp_path.last);
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bgp_path.prepend(bgp_path.last);
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bgp_path.prepend(bgp_path.last);
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}
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if (LOCAL_ASN, 115, 5) ~ bgp_large_community then {
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bgp_path.prepend(bgp_path.last);
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bgp_path.prepend(bgp_path.last);
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bgp_path.prepend(bgp_path.last);
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bgp_path.prepend(bgp_path.last);
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bgp_path.prepend(bgp_path.last);
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}
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# Finished (LOCAL_ASN, 115, *);
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}
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function pub_process_communities(int ASN, int type) {
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if (LOCAL_ASN, 125, POP) ~ bgp_large_community then {
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bgp_community.add((65535, 65282));
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}
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if (LOCAL_ASN, 126, REGION) ~ bgp_large_community then {
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bgp_community.add((65535, 65283));
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}
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if (65535, 65281) ~ bgp_community then return false;
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if (65535, 65282) ~ bgp_community then return false;
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if (65535, 65283) ~ bgp_community then return false;
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if (LOCAL_ASN, 2, ASN) ~ bgp_large_community then reject
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# PEER
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if (type<10) then {
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if (LOCAL_ASN, 1, 1) ~ bgp_large_community then return false;
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# UPSTREAM
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} else if (type=10) then {
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if (LOCAL_ASN, 1, 0) ~ bgp_large_community then return false;
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# DOWNSTREAM
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} else if (type=20) then {
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if (LOCAL_ASN, 1, 2) ~ bgp_large_community then return false;
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}
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}
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function transit_import_filter(int ASN) {
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if !is_valid() then return false;
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pub_add_communities(ASN, 10);
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pub_preprocess_communities();
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return true;
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}
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function transit_export_filter(int ASN) {
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if !is_valid() then return false;
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# Delete Self eBGP Confed Path.
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bgp_path.delete([4200000000..4225479999]);
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pub_process_communities(ASN, 10);
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if bgp_path.last !~ DOWNSTREAM_ASN then return false;
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return true;
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} |