diff options
| author | Igor Ryzhov <iryzhov@nfware.com> | 2021-03-10 01:35:55 +0300 |
|---|---|---|
| committer | Igor Ryzhov <iryzhov@nfware.com> | 2021-03-16 17:25:06 +0300 |
| commit | f1825d571e2cf48922fe86d5158018a13bd75d4c (patch) | |
| tree | 2f1c612eb700598304d019d04de0e57f5693e2cf | |
| parent | 5aeb216ea53f330a3ac72e3982dcff9500bc1fb3 (diff) | |
bfdd: warn users about echo-mode restrictions
Echo-mode implementation is currently broken. Instead of sending packets
to it's own address, bfdd is sending echo packets to the peer's address.
It may seem to work when testing between two FRR instances, because FRR
loops back such packets, but no other implementation is supposed to do
that.
Let's warn users that the current implementation works only between two
FRR instances.
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
| -rw-r--r-- | bfdd/bfdd_cli.c | 4 | ||||
| -rw-r--r-- | doc/user/bfd.rst | 3 |
2 files changed, 6 insertions, 1 deletions
diff --git a/bfdd/bfdd_cli.c b/bfdd/bfdd_cli.c index 206f6c7d0c..211588cce1 100644 --- a/bfdd/bfdd_cli.c +++ b/bfdd/bfdd_cli.c @@ -433,6 +433,10 @@ DEFPY_YANG( return CMD_WARNING_CONFIG_FAILED; } + if (!no && !bglobal.bg_use_dplane) { + vty_out(vty, "%% Current implementation of echo mode works only when the peer is also FRR.\n"); + } + nb_cli_enqueue_change(vty, "./echo-mode", NB_OP_MODIFY, no ? "false" : "true"); return nb_cli_apply_changes(vty, NULL); diff --git a/doc/user/bfd.rst b/doc/user/bfd.rst index b8f749b740..87f560b5bb 100644 --- a/doc/user/bfd.rst +++ b/doc/user/bfd.rst @@ -174,7 +174,8 @@ BFD peers and profiles share the same BFD session configuration commands. .. clicmd:: echo-mode Enables or disables the echo transmission mode. This mode is disabled - by default. + by default. If you are not using distributed BFD then echo mode works + only when the peer is also FRR. It is recommended that the transmission interval of control packets to be increased after enabling echo-mode to reduce bandwidth usage. |