Advise Requested regarding serial number for DDNS
Kevin Darcy
kcd at daimlerchrysler.com
Fri May 12 21:48:35 UTC 2000
Barry Margolin wrote:
> In article <20000512105329.A3121 at dns.net>,
> Andras Salamon <andras at dns.net> wrote:
> >On Thu, May 11, 2000 at 05:15:37PM -0700, Brian Keves - NCS UAI Contractor wrote:
> >> Each Dynamic Update seems to increment the serial number for the zone
> >> and I'm going to run out of serial numbers fast using the current
> >> strategy:
> >>
> >> 2000051100 ; Serial
> >> ; YYYYMMDDCC ; Year, Month, Day, Count
> >>
> >> Is there a limit to the number of digits I can use for the serial number?
> >
> >Yes: it is a 32 bit integer. If regarded as unsigned, the range is
> >0 to 2^32 - 1 = 4294967295. If signed, then the range is -2^31 =
> >-2147483648 to 2^31 -1 = 2147483647.
>
> It's unsigned.
>
> But you can't run out, because it's allowed to wrap around. You would only
> have a problem if more than 2 billion dynamic updates were performed
> between slave server refreshes.
See RFC 1982 for details.
- Kevin
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