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Re: WG Adoption request for draft-mirsky-bfd-mpls-demand

Greg Mirsky <gregimirsky@gmail.com> Mon, 18 February 2019 18:02 UTC

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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Mon, 18 Feb 2019 10:02:09 -0800
Message-ID: <CA+RyBmXN=0FYoHWt4TzPg05_ZoC9RbsOSvoFAte9doDY8_JDgg@mail.gmail.com>
Subject: Re: WG Adoption request for draft-mirsky-bfd-mpls-demand
To: Jeffrey Haas <jhaas@pfrc.org>
Cc: "Reshad Rahman (rrahman)" <rrahman@cisco.com>, Martin Vigoureux <martin.vigoureux@nokia.com>, rtg-bfd WG <rtg-bfd@ietf.org>
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Hi Jeff,
here's the text from the draft that describes the behavior on the BFD
system:
   If the Detection timer at the egress LER expires it MUST send BFD
   Control packet to the ingress LER with the Poll (P) bit set, Status
   (Sta) field set to Down value, and the Diagnostic (Diag) field set to
   Control Detection Time Expired value.  The egress LER sends these
   Control packets to the ingress LER at the rate of one per second
   until either it receives the valid for this BFD session control
   packet with the Final (F) bit set from the ingress LER or the defect
   condition clears and the BFD session state reaches Up state at the
   egress LER.

Regards,
Greg

On Mon, Feb 18, 2019 at 9:34 AM Jeffrey Haas <jhaas@pfrc.org> wrote:

> On Mon, Feb 18, 2019 at 08:48:08AM -0800, Greg Mirsky wrote:
> > As for your question of what is the change proposed in the draft I'll
> point
> > to section 6.6 RFC 5880 that describes the Demand mode. It states that
> the
> > periodic transmission of control messages MUST be stopped.
>
> Correct.
>
> > The draft
> > defines, and that is what I consider the update to section 6.6, the
> > procedure by which the system in Demand mode initiates the Poll sequence
> to
> > inform the remote BFD system of RDI.
>
> Would you clarify where in your draft this is discussed?
>
> > Greg
>
> -- Jeff
>

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