Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt

Mahesh Jethanandani <mjethanandani@gmail.com> Tue, 21 July 2020 01:28 UTC

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Subject: Re: I-D Action: draft-ietf-bfd-optimizing-authentication-10.txt
From: Mahesh Jethanandani <mjethanandani@gmail.com>
In-Reply-To: <20200721004857.GB31779@pfrc.org>
Date: Mon, 20 Jul 2020 18:28:46 -0700
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To: Jeffrey Haas <jhaas@pfrc.org>
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Hi Jeff,

> On Jul 20, 2020, at 5:48 PM, Jeffrey Haas <jhaas@pfrc.org> wrote:
> 
> Mahesh,
> 
> While reviewing version -10, I had the following questions:
> 
> For the state machine changes, in the Init->Init state, we have NULL auth.
> While this is a "boring" transition, it's also happening at a very slow part
> of the state machine; timers should be once a second.  Is there a strong
> argument to use NULL here?

Not particularly. The reason to choose NULL was because of the (limited) impact it would have. But if the WG feels otherwise, I can change it to Auth.

> 
> In section 3:
> :   Sequence Number: The sequence number for this packet.  Implementation
> :   may use sequence numbers (bfd.XmitAuthSeq) as defined in BFD
> :   [RFC5880], or secure sequence numbers as defined in Secure BFD
> :   Sequence Numbers [I-D.ietf-bfd-secure-sequence-numbers].
> 
> In the core BFD spec, it distinguishes between occasional and meticulous
> modes and uses different code points to determine what you do.  I suspect
> your intent is that we always use meticulous mode here?

Yes, the intent was meticulous. I can clarify that.

> 
> -- Jeff
> 
> 
> On Mon, Jul 13, 2020 at 01:56:14PM -0700, Mahesh Jethanandani wrote:
>>> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>>> This draft is a work item of the Bidirectional Forwarding Detection WG of the IETF.
>>> 
>>>       Title           : Optimizing BFD Authentication
>>>       Authors         : Mahesh Jethanandani
>>>                         Ashesh Mishra
>>>                         Ankur Saxena
>>>                         Manav Bhatia
>>> 	Filename        : draft-ietf-bfd-optimizing-authentication-10.txt
>>> 	Pages           : 8
>>> 	Date            : 2020-07-13
>>> 
>>> Abstract:
>>>  This document describes an optimization to BFD Authentication as
>>>  described in Section 6.7 of BFD RFC 5880.  This document updates RFC
>>>  5880.
> 
> 

Mahesh Jethanandani
mjethanandani@gmail.com