On Sep 27, 2010, at 3:55 PM, Sten Carlsen wrote:

> While a single zone is perfectly fine from a standards point of view, "some" 
> clients might be served addresses they don't like 10.x.x.0 and 10.x.x.255.
> 
> Just a reminder that this could be a reason if something appears weird.     

Don't confuse "zone" and "DHCP range". Having a 10/8 reverse zone does not mean 
you must have an address range that covers these addresses that might confuse 
users.

You wouldn't want a DHCP range (or a network) that large anyway. The broadcast 
traffic would be a killer.

Regards,
Chris Buxton
BlueCat Networks

> On 27/09/10 23:07, Chris Buxton wrote:
>> 
>> On Sep 27, 2010, at 1:03 PM, Christopher Cain wrote:
>> 
>>> Hi all.
>>> 
>>> I am setting up a new appliance-based DNS solution that will contain a fair 
>>> number of separately managed Windows DNS slave servers (in addition to the 
>>> DNS appliances that will handle the .
>>> 
>>> Currently there are just over 8000 host records that resolve to IP's in the 
>>> 10.x.x.x space.  I am wrestling with whether or not I should create a 
>>> single 10.in-addr.arpa zone or if I should create 256 /16 zones (i.e. - 
>>> 0.10.in-addr.arpa to 255.10.in-addr.arpa).
>>> 
>>> The reason I want to encompass the entire 10 space is so new arpa zones 
>>> will not have to be defined on all servers (specifically on the Windows 
>>> slaves) if a new part of the 10 space is used at some point.
>>> 
>>> Any recommendations or comments would be greatly appreciated.
>> There's nothing wrong with a single 10.in-addr.arpa zone. If you need to 
>> break it up amongst different master servers, a 10.in-addr.arpa zone can 
>> still be used to delegate child zones to their respective servers.
>> 
>> You might break it up if, for example, the DDNS traffic from DHCP clients 
>> across the enterprise would be too much for one master server to 
>> accommodate. The BIND name server writes to its journal file synchronously, 
>> for every update, and this can be quite a bottleneck. (The same is true for 
>> slave servers, which keep a journal file for zone transfers in order to 
>> service IXFR requests sent to them.)
>> 
>> Regards,
>> Chris Buxton
>> BlueCat Networks
>> 
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> 
> -- 
> Best regards
> 
> Sten Carlsen
> 
> No improvements come from shouting:
> 
>        "MALE BOVINE MANURE!!!" 
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