bmp: add a interface source to bmp connect command

With current release, forcin the source ip address when setting up a BMP
connection is not possible.

The need is to add an extra parameter for the following vty command:

router bgp 65500
bmp targets AAA
bmp connect 2.2.2.2 port 666 min-retry 100 max-retry 700
bmp connect 2:2::2:2 port 666 min-retry 100 max-retry 700 [source-interface lo1]

Signed-off-by: Francois Dumontet <francois.dumontet@6wind.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/doc/user/bmp.rst b/doc/user/bmp.rst
index f925910d4..764584f89 100644
--- a/doc/user/bmp.rst
+++ b/doc/user/bmp.rst
@@ -108,13 +108,15 @@ BMP session configuration
 Inside a ``bmp targets`` block, the following commands control session
 establishment:
 
-.. clicmd:: bmp connect HOSTNAME port (1-65535) {min-retry MSEC|max-retry MSEC}
+
+.. clicmd:: bmp connect HOSTNAME port (1-65535) {min-retry MSEC|max-retry MSEC} [source-interface WORD]
 
    Add/remove an active outbound BMP session.  HOSTNAME is resolved via DNS,
    if multiple addresses are returned they are tried in nondeterministic
    order.  Only one connection will be established even if multiple addresses
    are returned.  ``min-retry`` and ``max-retry`` specify (in milliseconds)
-   bounds for exponential backoff.
+   bounds for exponential backoff. ``source-interface`` is the local interface on
+   which the connection has to bind.
 
 .. warning::