From 1950a479c020d1972b6007d8ea0f66e3d4f8564a Mon Sep 17 00:00:00 2001
From: "Ondrej Zajicek (work)" <santiago@crfreenet.org>
Date: Thu, 23 Feb 2017 16:32:07 +0100
Subject: 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.
---
 doc/bird.sgml | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'doc/bird.sgml')

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
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