66 lines
2.5 KiB
Plaintext
66 lines
2.5 KiB
Plaintext
# 社区属性转换与本地优先级修正函数（BIRD 2.18 纯净稳定版）
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function function_inet_community_make(){
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# 1. 从上游收到的路由 => 赋予兜底优先级 (Local Pref = 100)
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if bgp_large_community ~ [(LOCAL_ASN, 10100, 0)] then {
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bgp_local_pref = 100;
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bgp_large_community.add((LOCAL_ASN, 2, 4));
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bgp_large_community.delete((LOCAL_ASN, 10100, 0));
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return true;
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}
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# 2. 私有上游 => 赋予兜底优先级 (Local Pref = 100)
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if bgp_large_community ~ [(LOCAL_ASN, 10100, 1)] then {
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bgp_local_pref = 100;
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bgp_large_community.delete((LOCAL_ASN, 10100, 1));
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return true;
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}
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# 3. Peer/IXP 收到的路由 => 赋予中等优先 (Local Pref = 140)
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if bgp_large_community ~ [(LOCAL_ASN, 10100, 2), (LOCAL_ASN, 10100, 3)] then {
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bgp_local_pref = 140;
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bgp_large_community.add((LOCAL_ASN, 2, 4));
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bgp_large_community.delete([(LOCAL_ASN, 10100, 2), (LOCAL_ASN, 10100, 3)]);
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return true;
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}
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# 4. 下游客户发来的路由 => 赋予高优先级 (Local Pref = 180)
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if bgp_large_community ~ [(LOCAL_ASN, 10100, 4)] then {
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bgp_local_pref = 180;
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# 修复：BIRD 的 add 不支持中括号批量加，必须拆开单次调用
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bgp_large_community.add((LOCAL_ASN, 2, 1));
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bgp_large_community.add((LOCAL_ASN, 2, 2));
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bgp_large_community.add((LOCAL_ASN, 2, 3));
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bgp_large_community.add((LOCAL_ASN, 2, 4));
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bgp_large_community.delete((LOCAL_ASN, 10100, 4));
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return true;
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}
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# 5. 自身宣告的前缀 => 赋予最高级封顶 (Local Pref = 200)
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if bgp_large_community ~ [(LOCAL_ASN, 200, 0)] then {
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bgp_local_pref = 200;
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# 修复：拆开单独 add
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bgp_large_community.add((LOCAL_ASN, 2, 0));
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bgp_large_community.add((LOCAL_ASN, 2, 1));
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bgp_large_community.add((LOCAL_ASN, 2, 2));
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bgp_large_community.add((LOCAL_ASN, 2, 3));
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bgp_large_community.add((LOCAL_ASN, 2, 4));
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bgp_large_community.delete((LOCAL_ASN, 200, 0));
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return true;
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}
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return false;
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}
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# 社区安全检查/清理（全量通配版）
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function function_inet_bgp_community_clear(){
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# 使用 [ (ASN, Data1, *) ] 语法，直接清空该分类下的所有子标记
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bgp_large_community.delete([
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(LOCAL_ASN, 1, *),
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(LOCAL_ASN, 2, *),
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(LOCAL_ASN, 3, *),
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(LOCAL_ASN, 200, *),
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(LOCAL_ASN, 10100, *),
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(LOCAL_ASN, 10101, *),
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(LOCAL_ASN, 10102, *)
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]);
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} |