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List: mpls
Subject: Re: [mpls] FI -> FPI ?
From: Haoyu Song <haoyu.song () futurewei ! com>
Date: 2021-10-05 15:29:43
Message-ID: BY3PR13MB4787444E5CA520F9683D911D9AAF9 () BY3PR13MB4787 ! namprd13 ! prod ! outlook ! com
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It's function for sure but not necessarily for "forwarding" only, so IMO maybe \
"Network Function Indicator" (NFI) is more generic.
Haoyu
-----Original Message-----
From: mpls <mpls-bounces@ietf.org> On Behalf Of Loa Andersson
Sent: Tuesday, October 5, 2021 12:55 AM
To: Kireeti Kompella <kireeti.ietf@gmail.com>
Cc: mpls <mpls@ietf.org>
Subject: Re: [mpls] FI -> FPI ?
Folks,
I share Stewart's concern about a potential mix up of FAI and PHY, and think we \
should avoid if possible.
I've been thinking about proposing FOI (Forwarding Operations Indicator) or FFI \
(Forwarding Functions Indicator).
/Loa
Sent from my iPad
> On 5 Oct 2021, at 01:10, Kireeti Kompella <kireeti.ietf@gmail.com> wrote:
>
> Hi Stewart,
>
> FI is a term you made up :) In my draft, the term I use, and that others, \
> including Loa, have been using, is Forwarding Actions Indicator (FAI). I tend to \
> spell it out (F-A-I); Loa pronounces it the European way ("fie"); an Englishman or \
> a Frenchman might pronounce it "fay". I don't think one should pick a name based \
> on how one might pronounce it, but rather on what is appropriate to its use. The \
> FAI label indicates actions to be taken by the forwarding plane. At present, there \
> is no programmability aspect to the FAI.
> Any similarity in sound with "phy" (which one could argue should be pronounced \
> "fee", as in physical) is quickly dispelled by adding "label" or "SPL", or from \
> context.
> Cheers,
> Kireeti.
>
> > On Oct 1, 2021, at 08:29, Stewart Bryant <stewart.bryant@gmail.com> wrote:
> >
> > I do not like the name FI (Forwarding Indicator) because phonetically it \
> > sounds like phy which is the abbreviation for the physical layer. MPLS and the \
> > physical layer are relatively close friends and I can see confusion.
> > I was wondering about the term FPI (Forwarding and Programming Indicator) which \
> > has a nice phonetic ring about it and if it confused the LI people some might \
> > consider that a plus. The term captures the notion that we indicate not just \
> > where to send the packet but also what to do with it, hence Forwarding and \
> > Programming.
> > - Stewart
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