Differences

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--- edgerouter:bgp [2018/05/15 18:29] – created brielle
+++ edgerouter:bgp [2018/05/15 18:38] – [The Prefix Lists] brielle
@@ Line 29: / Line 29: @@
         rule 10 {
             action permit
-            le 64
+            le 48
             prefix 2001:DB8::/32
         }
@@ Line 35: / Line 35: @@
 }
 </code>
+The -From prefix lists are for routes you receive (imported) from your ISP, while the -To lists are for routes being exported (announced) to your provider.  In the case of IPv4, the smallest globally accepted size most if not all providers announce is /24.  For IPv6, the smallest globally accepted size is /48.
+'le' means any prefix smaller (ie: 'le 48' won't allow a /64 IPv6 prefix from your ISP's routing table, but it will allow a /32).  'ge' means any prefix greater (ie: 'ge 56' won't allow a /48, but will allow a /56, /64, or even /128).

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