[IANAtransition] Control, co-ordination, and interop (was Re: [IANAxfer] ] ICANN proposal released)
vint at google.com
Sat Apr 12 08:56:04 UTC 2014
Richard, you can't possibly mean "each branch is identical to each other
branch" - each branch is distinct. foo.com is distinct from bar.com
Now, if you go down a particular branch, say, foo.com, it is that case that
all servers of foo.com are supposed to be the same. So perhaps that is what
Split-horizon makes for some differences. Local servers may actually
produce different results but the global internet resolution doesn't see
this since the effect is local.
I am surprised to learn, however, that one can dial a number from country
X and get a different result when dialing the same number from country Y.
On Sat, Apr 12, 2014 at 4:50 AM, Richard Hill <rhill at hill-a.ch> wrote:
> Dear Vint,
> Unless I am mistaken, each branch of the DNS is identical to each other
> branch of the DNS. When you query www.isoc.ch
> you get the same result everywhere.
> Such is not the case for the telephone network. For example, when you
> dial certain Pacific-Island numbers in certain countries, you get an adult
> phone service that is located in that country, not a telephone located in
> the Pacific Island in question.
> -----Original Message-----
> *From:* Vint Cerf [mailto:vint at google.com]
> *Sent:* samedi, 12. avril 2014 10:32
> *To:* rhill at hill-a.ch; ianatransition at icann.org
> *Subject:* Re: [IANAtransition] Control, co-ordination, and interop (was
> Re: [IANAxfer] ] ICANN proposal released)
> On Sat, Apr 12, 2014 at 3:45 AM, Richard Hill <rhill at hill-a.ch> wrote:
>> And that's my point. It is one distributed database. Whereas the
>> of telephone numbers is actually not one distributed database, it is a
>> collection of hundreds of databases which are managed independently and
>> mostly, but not entirely, synchronized. Since they are not entirely
>> synchronized, I don't consider them to be part of a single distributed
> For all practical purposes, each branch of the DNS is a distinct database
> so it is really very much like your description of the phone system in
> that regard.
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