Re: [Anima] ANI Autoconfiguration via DNS

[Esko Dijk <[e-mail]>]

Hello Bill,

You mention "the advantages of using native CBOR encoding".  So this refers to the CBOR encoding of (DNS) service properties, which would avoid parsing of the old DNS format. 
As I understand there's a wish of people to avoid having a DNS data parser in devices in the ACP, since the already-present CBOR parser can then be used instead.

Now if we would have such DNS-in-CBOR format, it would be more generally useful in IETF and not just in ANIMA. Do you agree?
If the format is more generally useful it could be defined in either one of the CBOR, CoRE, or DNSSD WGs.  (Although the latter may not be willing to renew something that's "already good")
And we need to keep in mind the effort of the CoRE WG (still ongoing draft-ietf-core-href) to define a better encoding of the URI -> the CRI, in CBOR. It isn't trivial to cover all properties of the URI correctly. It takes a lot of effort.

If we still decide to do this in ANIMA WG context I would just go for the simplest possible subset of DNS-SD that fulfills the use cases and not try to be complete.

Regards
Esko

-----Original Message-----
From: Anima <[e-mail]> On Behalf Of William Atwood
Sent: Monday, November 7, 2022 15:56
To: Anima WG <[e-mail]>
Subject: [Anima] ANI Autoconfiguration via DNS

Item 08 in the ANIMA agenda for IETF 115.

draft-eckert-anima-grasp-dnssd presents standards for the data 
structures (GRASP objectives) that will be required to effect 
autoconfiguration of basic services such as syslog, NTP, and DNS, using 
GRASP.

draft-eckert-anima-services-dns-autoconfig presents standards for 
actually providing these services, using the objectives defined in 
draft-eckert-anima-grasp-dnssd.

A strong argument is given in section 1 of
draft-eckert-anima-grasp-dnssd, showing that the reliability and 
security of GRASP, and the advantages of using native CBOR encoding and 
GRASP flooding, justify the effort to define a GRASP-specific approach, 
rather than just using GRASP to carry the packets of the needed services.

Clearly these services are essential to any running distributed system, 
and standardizing their on-the-wire representation will likely reduce 
potential problems with incompatible software in the future.

I therefore encourage the WG to adopt these two drafts as Working Group 
documents.

   Bill Atwood

-- 
Dr. J.W. Atwood, Eng.             tel:   [phone] x3046
Distinguished Professor Emeritus  fax:   [phone]
Department of Computer Science
    and Software Engineering
Concordia University ER 1234      email:[e-mail]
1455 de Maisonneuve Blvd. West    http://users.encs.concordia.ca/~bill
Montreal, Quebec Canada H3G 1M8

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