--On Friday, September 23, 2022 19:25 +0000 Amanda Baber
<amanda.ba...@iana.org> wrote:
> Hi,
>
> IANA uses the term "registry group" to refer to top-level
> registries and "registry" to describe a set of registrations
> (as opposed to a set of sets). There are logistical reasons
> for this, but the use of the term "registry" in particular
> matches the usage in ICANN's MoU with the IETF (and our
> MoU-mandated performance reports).
>
> I should add that we still use the term "sub-registry," but
> only to refer to, e.g., a registry of sub-TLVs for a TLV.
Amanda,
In the hope of getting something else on which I'm working [1]
right, some questions about the above:
If I look at a protocol assignments page, e.g.,
https://www.iana.org/assignments/mail-parameters/mail-parameters.xhtml
is "MAIL Parameters" the "top-level registry" aka "registry
group", despite the fact that some of the registries on that
page are associated with different protocols (even if they are
somehow mail-related and, as we have discussed, there are
mail-related registries elsewhere)?
Also some of what I assume are called "registries" ("SMTP
Service Extensions", "SMTP Service Extension Parameters", "Mail
Transmission Types", etc.) are subsidiary to other ones there.
Does that make a difference?
And, is "SMTP Service Extension Parameters" properly a
sub-registry of "SMTP Service Extensions"? And, forgive my
ignorance, but what is a "TLV" in this context?
thanks,
john
[1] draft-ietf-emailcore-rfc5321bis
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