Dear All,
Somewhere I read that number of ROOT DNS servers is limited to 13 because of
protocol limitation of DNS and UDP.
Exact writing was "A combination of limits in the DNS and certain
protocols, namely the practical size of unfragmented User Datagram Protocol
(UDP) packets, resulted in a
On Fri, Nov 11, 2011 at 11:08:31AM +0530, Gaurav Kansal wrote:
> As root DNS are running in anycast so number is not an issue at all. But I
> don't understand where exactly is this limitation exists???
Prior to EDNS(0), DNS packets transmitted over UDP couldn't be more
than 512 bytes in length. M
On Nov 11, 2011, at 1:38 PM, Gaurav Kansal wrote:
> Dear All,
>
> Somewhere I read that number of ROOT DNS servers is limited to 13 because of
> protocol limitation of DNS and UDP.
> Exact writing was “A combination of limits in the DNS and certain protocols,
> namely the practical size of u
In message <004c01cca034$259d4870$70d7d950$@nic.in>, Gaurav Kansal writes:
>
> Dear All,
>
>
>
> Somewhere I read that number of ROOT DNS servers is limited to 13 because of
> protocol limitation of DNS and UDP.
>
> Exact writing was "A combination of limits in the DNS and certain
> protoco
y, 11 November, 2011 12:14 PM
To: Gaurav Kansal
Cc: bind-us...@isc.org
Subject: Re: Reason for Limited number of Root DNS Servers
In message <004c01cca034$259d4870$70d7d950$@nic.in>, Gaurav Kansal writes:
>
> Dear All,
>
>
>
> Somewhere I read that number of ROOT
There is more than 13 physical root servers but these servers have only 13
domain names (a-m.root-servers.net) and ip addresses. Only 13 because of
limitation of single DNS message to 512 bits (RFC 1035).
http://root-servers.org -- List and map of the root servers
Dnia 11 listopada 2011 6:38 Gaur
Mark Andrews [mailto:ma...@isc.org]
Sent: Friday, 11 November, 2011 12:14 PM
To: Gaurav Kansal
Cc: bind-us...@isc.org
Subject: Re: Reason for Limited number of Root DNS Servers
In message<004c01cca034$259d4870$70d7d950$@nic.in>, Gaurav Kansal writes:
Dear All,
Somewhere I read that number
r, 2011 12:14 PM
> To: Gaurav Kansal
> Cc: bind-us...@isc.org
> Subject: Re: Reason for Limited number of Root DNS Servers
>
>
> In message <004c01cca034$259d4870$70d7d950$@nic.in>, Gaurav Kansal writes:
> >
> > Dear All,
> >
> >
> >
> >
* Gaurav Kansal:
> As root DNS are running in anycast so number is not an issue at all. But I
> don't understand where exactly is this limitation exists???
The limitation does not exist, otherwise it would not have been possible
to add IPv6 addresses to the priming response.
--
Florian Weimer
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