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-rw-r--r--doc/bird.sgml10
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index 2b9ffa02..63890031 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -1486,6 +1486,16 @@ for each neighbor using the following configuration parameters:
This option requires that the connected routing table is
<ref id="dsc-sorted" name="sorted">. Default: off.
+ <tag>allow local as [<m/number/]</tag>
+ BGP prevents routing loops by rejecting received routes with
+ the local AS number in the AS path. This option allows to
+ loose or disable the check. Optional <cf/number/ argument can
+ be used to specify the maximum number of local ASNs in the AS
+ path that is allowed for received routes. When the option is
+ used without the argument, the check is completely disabled
+ and you should ensure loop-free behavior by some other means.
+ Default: 0 (no local AS number allowed).
+
<tag>enable route refresh <m/switch/</tag> When BGP speaker
changes its import filter, it has to re-examine all routes
received from its neighbor against the new filter. As these