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-rw-r--r--doc/bird.sgml4
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/bird.sgml b/doc/bird.sgml
index 799972c..3d82e45 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -1578,7 +1578,7 @@ protocol ospf <name> {
<sect1>Attributes
-<p>OSPF defines three route attributes. Each internal route has a <cf/metric/
+<p>OSPF defines four route attributes. Each internal route has a <cf/metric/.
Metric is ranging from 1 to infinity (65535).
External routes use <cf/metric type 1/ or <cf/metric type 2/.
A <cf/metric of type 1/ is comparable with internal <cf/metric/, a
@@ -1588,6 +1588,8 @@ If you specify both metrics only metric1 is used.
Each external route can also carry a <cf/tag/ which is a 32-bit
integer which is used when exporting routes to other protocols;
otherwise, it doesn't affect routing inside the OSPF domain at all.
+The fourth attribute is a <cf/router_id/ of the router advertising
+that route/network. This attribute is read-only.
Default is <cf/metric of type 2 = 10000/ and <cf/tag = 0/.
<sect1>Example