doc: Add `default-originate route-map WORD` for bgpd

Signed-off-by: Donatas Abraitis <donatas.abraitis@gmail.com>

diff --git a/doc/user/bgp.rst b/doc/user/bgp.rst
index 2f8c5c01da54624c3312ccaea9d866af6b6fe7e3..4115146e5589dc48a9cf076b3ed2569715c839a2 100644 (file)
--- a/doc/user/bgp.rst
+++ b/doc/user/bgp.rst
@@ -1488,12 +1488,30 @@ Configuring Peers
        neighbor bar update-source lo0
 
 
-.. clicmd:: neighbor PEER default-originate
+.. clicmd:: neighbor PEER default-originate [route-map WORD]
 
    *bgpd*'s default is to not announce the default route (0.0.0.0/0) even if it
    is in routing table. When you want to announce default routes to the peer,
    use this command.
 
+   If ``route-map`` keyword is specified, then the default route will be
+   originated only if route-map conditions are met. For example, announce
+   the default route only if ``10.10.10.10/32`` route exists and set an
+   arbitrary community for a default route.
+
+   .. code-block:: frr
+
+      router bgp 64555
+       address-family ipv4 unicast
+        neighbor 192.168.255.1 default-originate route-map default
+      !
+      ip prefix-list p1 seq 5 permit 10.10.10.10/32
+      !
+      route-map default permit 10
+       match ip address prefix-list p1
+       set community 123:123
+      !
+
 .. clicmd:: neighbor PEER port PORT
 
 .. clicmd:: neighbor PEER password PASSWORD