From 158a95c5071fe253e384ada85a58a532217c8f33 Mon Sep 17 00:00:00 2001 From: Rafael Zalamena Date: Tue, 11 Aug 2020 14:59:09 -0300 Subject: [PATCH] doc: add BFD minimum TTL documentation Let the user know what the new command does. Signed-off-by: Rafael Zalamena --- doc/user/bfd.rst | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/doc/user/bfd.rst b/doc/user/bfd.rst index 3b49a53793..86b0c28002 100644 --- a/doc/user/bfd.rst +++ b/doc/user/bfd.rst @@ -184,6 +184,19 @@ BFD peers and profiles share the same BFD session configuration commands. The default is active-mode (or ``no passive-mode``). +.. index:: [no] minimum-ttl (1-254) +.. clicmd:: [no] minimum-ttl (1-254) + + For multi hop sessions only: configure the minimum expected TTL for + an incoming BFD control packet. + + This feature serves the purpose of thightening the packet validation + requirements to avoid receiving BFD control packets from other + sessions. + + The default value is 254 (which means we only expect one hop between + this system and the peer). + BFD Peer Specific Commands --------------------------