diff --git a/doc/bird.conf.example b/doc/bird.conf.example
index 05259d5b..22221d43 100644
--- a/doc/bird.conf.example
+++ b/doc/bird.conf.example
@@ -179,6 +179,9 @@ protocol static {
# default bgp_med 0; # MED value we use for comparison when none is defined
# default bgp_local_pref 0; # The same for local preference
# source address 62.168.0.14; # What local address we use for the TCP connection
+# password "secret" # Password used for MD5 authentication
+# rr client; # I am a route reflector and the neighor is my client
+# rr cluster id 1.0.0.1 # Use this value for cluster id instead of my router id
# export where source=RTS_STATIC;
# export filter {
# if source = RTS_STATIC then {
diff --git a/doc/bird.sgml b/doc/bird.sgml
index 87113fa9..5ee9562f 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -655,13 +655,19 @@ routing table it wishes to export along with complete path information
route) in order to avoid routing loops.
BIRD supports all requirements of the BGP4 standard as defined in
-RFC 1771
-including several enhancements from the
-latest draft.
-It also supports the community attributes as per
-RFC 1997,
-capability negotiation defined in
-RFC 2842.
+RFC 4271
+It also supports the community attributes
+(RFC 1997),
+capability negotiation
+(RFC 3392),
+MD5 password authentication
+(RFC 2385),
+route reflectors
+(RFC 4456),
+and 4B AS numbers
+(RFC 4893).
+
+
For IPv6, it uses the standard multiprotocol extensions defined in
RFC 2283
including changes described in the
@@ -721,6 +727,27 @@ for each neighbor using the following configuration parameters:
for next hop calculation. Default: the address of the local end
of the interface our neighbor is connected to.
+ password Use this password for MD5 authentication
+ of BGP sessions. Default: no authentication.
+
+ rr client Be a route reflector and treat neighbor as
+ route reflection client. Default: disabled.
+
+ rr cluster id Route reflectors use cluster id
+ to avoid route reflection loops. When there is one route reflector in a cluster
+ it usually uses its router id as a cluster id, but when there are more route
+ reflectors in a cluster, these need to be configured (using this option) to
+ use a common cluster id. Clients in a cluster need not known their cluster
+ id and this option is not allowed to them Default: a same as router id.
+
+ enable as4 BGP protocol was designed to use 2B AS numbers
+ and was extended later to allow 4B AS number. BIRD supports 4B AS extension,
+ but by disabling this option it can be persuaded not to advertise it and
+ to maintain old-style sessions with its neighbors. This might be useful for
+ circumventing bugs in neighbor's implementation of 4B AS extension.
+ Even when disabled (off), BIRD behaves internally as AS4-aware BGP router.
+ Default: on.
+
disable after error When an error is encountered (either
locally or by the other side), disable the instance automatically
and wait for an administrator to fix the problem manually. Default: off.