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authorOndrej Zajicek (work) <santiago@crfreenet.org>2017-02-23 16:32:07 +0100
committerOndrej Zajicek (work) <santiago@crfreenet.org>2017-02-23 16:32:07 +0100
commit1950a479c020d1972b6007d8ea0f66e3d4f8564a (patch)
tree6f023363fb7536eb912e4b373039e8c283626a8b /doc/bird.sgml
parent4e379bde60172823452cf96e9c0b6b1737c490f0 (diff)
BGP: Allow exchanging LOCAL_PREF with eBGP peers
Adds option 'allow bgp_local_pref' to override the usual restriction of LOCAL_PREF on eBGP sessions. Thanks to Lennert Buytenhek for the patch.
Diffstat (limited to 'doc/bird.sgml')
-rw-r--r--doc/bird.sgml8
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index 11fe2190..dd4472ae 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -2043,6 +2043,14 @@ using the following configuration parameters:
TX direction. When active, all available routes accepted by the export
filter are advertised to the neighbor. Default: off.
+ <tag><label id="bgp-allow-local-pref">allow bgp_local_pref <m/switch/</tag>
+ A standard BGP implementation do not send the Local Preference attribute
+ to eBGP neighbors and ignore this attribute if received from eBGP
+ neighbors, as per <rfc id="4271">. When this option is enabled on an
+ eBGP session, this attribute will be sent to and accepted from the peer,
+ which is useful for example if you have a setup like in <rfc id="7938">.
+ The option does not affect iBGP sessions. Default: off.
+
<tag><label id="bgp-allow-local-as">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