Re: [mpls] thought about the ADI name

Loa Andersson <loa@pi.nu> Wed, 22 December 2021 22:54 UTC

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To: Haoyu Song <haoyu.song@futurewei.com>, "mpls@ietf.org" <mpls@ietf.org>
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From: Loa Andersson <loa@pi.nu>
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Subject: Re: [mpls] thought about the ADI name
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Haoyu,

OK, I simply don't understand.

If you don't know what action you'll take, what good is it to know where 
to find the data?

It might be that this is not what you say, but that is what if get from 
your text below. Sorry if I'm misunderstanding.

/Loa

On 23/12/2021 03:25, Haoyu Song wrote:
> Hi Loa,
> 
> In my opinion the ADI should only be used to indicate the presence of AD.  E2E or HBH AD could be differentiated because in some case it can help stop further parsing beyond ADI.  Other information encoded in it won't help but complicate the parsing process. I strongly suggest any such proposal should give a clear presentation on why it's necessary and how it can help from the view of implementors, otherwise, we may end up with an over complicated design without tangible benefits.
> 
> Best regards,
> Haoyu
> 
> -----Original Message-----
> From: mpls <mpls-bounces@ietf.org> On Behalf Of Loa Andersson
> Sent: Sunday, December 19, 2021 8:32 AM
> To: mpls@ietf.org
> Subject: [mpls] thought about the ADI name
> 
> Working Group,
> 
> The MIAD Requirement Specification use the abbreviation ADI, it stands for Ancillary Data Indicator. Which is all nice and dandy.
> 
> But isn't it he case  that the indicator gives us two things, the action to be performed and where to find the data needed, i.e., an Ancillary Data and Action indication (ADAI?).
> 
> No I'm not suggesting that we change, but we should be aware, and it would be nice to have it mentioned somewhere.
> 
> /Loa

-- 
Loa Andersson                        email: loa@pi.nu
Senior MPLS Expert                          loa.pi.nu@gmail.com
Bronze Dragon Consulting             phone: +46 739 81 21 64