From 3228c72cc030f409914134440a7e55bbcfc9ff6a Mon Sep 17 00:00:00 2001
From: Ondrej Zajicek <santiago@crfreenet.org>
Date: Tue, 17 Nov 2009 11:41:29 +0100
Subject: Implements RFC 5004 - prefer older external routes.

---
 doc/bird.sgml | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'doc/bird.sgml')

diff --git a/doc/bird.sgml b/doc/bird.sgml
index 0c2b8fbe..40793ed3 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -981,6 +981,11 @@ for each neighbor using the following configuration parameters:
 	<tag>path metric <m/switch/</tag> Enable comparison of path lengths
 	when deciding which BGP route is the best one. Default: on.
 
+	<tag>prefer older <m/switch/</tag> Standard route selection algorithm
+	breaks ties by comparing router IDs. This changes the behavior
+	to prefer older routes (when both are external and from different
+	peer). For details, see RFC 5004. Default: off.
+
 	<tag>default bgp_med <m/number/</tag> Value of the Multiple Exit
 	Discriminator to be used during route selection when the MED attribute
 	is missing. Default: 0.
-- 
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