On Mon, Jan 17, 2011 at 3:57 PM, <[email protected]> wrote:

> > I agree except for using the IGP and RSVP for failure detection.  RSVP
> and
> > OSPF/ISIS run in the control plane and BFD is designed to run in the
> > forwarding plane.  Running BFD will diagnose issues where the control
> plane
> > is working but the forwarding plane is not.
>
> The BFD Echo mode is designed to operate in the forwarding plane. But
> BFD also has an Async mode which operates in the control plane.
>
> As far as I know Juniper doesn't implement Echo mode, only Async mode.
> Which is unfortunate.
>
>
Of course I can't find the link now, but just last night I read that prior
to JunOS 9.4 echo mode required a command to be entered in order to move BFD
to the forwarding plane.  In or after 9.4 a new daemon was created to allow
BFD to run in the forwarding plane and that became the default.  I don't
have time now but I will post the link later.
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