update

bird/function/inet_community.conf

@@ -0,0 +1,60 @@
+# 社区属性转换与本地优先级修正函数（Local Pref 200封顶版）
+function function_inet_community_make(){
+    # 1. 从上游收到的路由 => 赋予兜底优先级 (Local Pref = 100)
+    if bgp_large_community ~ [(LOCAL_ASN, 10100, 0)] then {
+        bgp_local_pref = 100;
+        bgp_large_community.add((LOCAL_ASN, 2, 4));
+        bgp_large_community.delete((LOCAL_ASN, 10100, 0));
+        return true;
+    }
+
+    # 2. 私有上游 => 赋予兜底优先级 (Local Pref = 100)
+    if bgp_large_community ~ [(LOCAL_ASN, 10100, 1)] then {
+        bgp_local_pref = 100;
+        bgp_large_community.delete((LOCAL_ASN, 10100, 1));
+        return true;
+    }
+
+    # 3. Peer/IXP 收到的路由 => 赋予中等优先 (Local Pref = 140)
+    if bgp_large_community ~ [(LOCAL_ASN, 10100, 2), (LOCAL_ASN, 10100, 3)] then {
+        bgp_local_pref = 140;
+        bgp_large_community.add((LOCAL_ASN, 2, 4));
+        bgp_large_community.delete([(LOCAL_ASN, 10100, 2), (LOCAL_ASN, 10100, 3)]);
+        return true;
+    }
+
+    # 4. 下游客户发来的路由 => 赋予高优先级 (Local Pref = 180)
+    if bgp_large_community ~ [(LOCAL_ASN, 10100, 4)] then {
+        bgp_local_pref = 180;
+        bgp_large_community.add([
+            (LOCAL_ASN, 2, 1), (LOCAL_ASN, 2, 2), (LOCAL_ASN, 2, 3), (LOCAL_ASN, 2, 4)
+        ]);
+        bgp_large_community.delete((LOCAL_ASN, 10100, 4));
+        return true;
+    }
+
+    # 5. 自身宣告的前缀 => 赋予最高级封顶 (Local Pref = 200)
+    if bgp_large_community ~ [(LOCAL_ASN, 200, 0)] then {
+        bgp_local_pref = 200;
+        bgp_large_community.add([(LOCAL_ASN, 2, 0..4)]);
+        bgp_large_community.delete((LOCAL_ASN, 200, 0));
+        return true;
+    }
+
+    return false;
+}
+
+
+# 社区安全检查/清理（全量通配版）
+function function_inet_bgp_community_clear(){
+    # 使用 [ (ASN, Data1, *) ] 语法，直接清空该分类下的所有子标记
+    bgp_large_community.delete([
+        (LOCAL_ASN, 1, *),
+        (LOCAL_ASN, 2, *),
+        (LOCAL_ASN, 3, *),
+        (LOCAL_ASN, 200, *),
+        (LOCAL_ASN, 10100, *),
+        (LOCAL_ASN, 10101, *),
+        (LOCAL_ASN, 10102, *)
+    ]);
+}