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--- docs:bgp-filter-examples [2019/01/22 11:10]
marcelo [reject_bogon_asns]
+++ docs:bgp-filter-examples [2019/01/22 11:15]
marcelo [reject_transit_paths]
@@ Linha 29: / Linha 29: @@
 </code>
 ===== reject_bogon_prefixes =====
-===== reject_long_aspaths =====
+<code>
+policy-options {
+    prefix-list BOGONS_v4 {
+.0.0.0/8;
+.0.0.0/8;
+.64.0.0/10;
+.0.0.0/8;
+.254.0.0/16;
+.16.0.0/12;
+.0.2.0/24;
+.88.99.0/24;
+.168.0.0/16;
+.18.0.0/15;
+.51.100.0/24;
+.0.113.0/24;
+.0.0.0/4;
+.0.0.0/4;
+    }
+    policy-statement BGP_FILTER_IN {
+        term IPv4 {
+            from {
+                prefix-list BOGONS_v4;
+            }
+            then reject;
+        }
+    }
+}
+</code>
 ===== reject_transit_paths =====
+<code>
+policy-options {
+  policy-statement bgp-import-policy {
+    term no-transit-leaks {
+        from as-path no-transit-import-in;
+        then reject;
+    }
+   }
+ }
+ as-path no-transit-import-in ".* (174|209|701|702|1239|1299|2914|3257|3320|3356|3549|3561|4134|5511|6453|6461|6762|7018) .*";
+</code>
 ===== reject_small_prefixes =====
+<code>
+policy-options {
+  policy-statement bgp-import-policy {
+    term reject_too_small_prefixes_v4 {
+        from {
+            route-filter 0.0.0.0/0 prefix-length-range /25-/32;
+        }
+        then {
+            reject;
+        }
+    }
+  }
+}
+</code>

AS53062