Reverse zone - one zone or multiple zones ?

Hi. We are currently setting up a reverse lookup zone(s) on our Windows
2003 DC(s) which also hosts DNS. Our network contains mainly 2000, XP
clients with 2000 & 2003 servers Our network is of small-medium size with
5-10 subnets e.g. 205.1.1.x to 20.1.1.20.x/24

If possible could anyone advise whether we should create individual reverse
lookup zones for each subnet ie. 205.1.1.x, 205.1.2.x etc or whether we
should create 205.1.x.x to accomodate all zones ?

Alex.

Read inline please.

In news:%(E-Mail Removed),
Alex <(E-Mail Removed)> typed:
> Hi. We are currently setting up a reverse lookup zone(s) on our
> Windows 2003 DC(s) which also hosts DNS. Our network contains mainly
> 2000, XP clients with 2000 & 2003 servers Our network is of
> small-medium size with 5-10 subnets e.g. 205.1.1.x to 20.1.1.20.x/24
>
> If possible could anyone advise whether we should create individual
> reverse lookup zones for each subnet ie. 205.1.1.x, 205.1.2.x etc or
> whether we should create 205.1.x.x to accomodate all zones ?

Use a zone for each subnet, 205.1.x is a /16 subnet, with 65534 addresses in
it, unless you own or control all of these don't include them in your
reverse lookup.



--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================
http://www.lonestaramerica.com/
http://support.wftx.us/
http://message.wftx.us/
===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and more
http://home.in.tum.de/~jain/software/oe-quotefix/
===================================
Keep a back up of your OE settings and folders
with OEBackup:
http://www.oehelp.com/OEBackup/Default.aspx
===================================

Hi Kevin. Thanks for your advice. Just so I fully understand, if we use
classless-subnetting so that we end up with vlans using 205.1.1.x,
205.1.2.x/24 etc does this have any influence on the decision ? We still
own/control the entire 205.1.x.x range .

Also, are there any documents which cover the reasons on how to decide which
method to select i.e. single subnet, multiple subnets or is it purely down
to the easiest method to manage/implement based on the IP subnets you
control ?

Thanks.

Alex.


"Kevin D. Goodknecht Sr. [MVP]" <(E-Mail Removed)> wrote in message
news:%(E-Mail Removed)...
> Read inline please.
>
> In news:%(E-Mail Removed),
> Alex <(E-Mail Removed)> typed:
>> Hi. We are currently setting up a reverse lookup zone(s) on our
>> Windows 2003 DC(s) which also hosts DNS. Our network contains mainly
>> 2000, XP clients with 2000 & 2003 servers Our network is of
>> small-medium size with 5-10 subnets e.g. 205.1.1.x to 20.1.1.20.x/24
>>
>> If possible could anyone advise whether we should create individual
>> reverse lookup zones for each subnet ie. 205.1.1.x, 205.1.2.x etc or
>> whether we should create 205.1.x.x to accomodate all zones ?
>
> Use a zone for each subnet, 205.1.x is a /16 subnet, with 65534 addresses
> in
> it, unless you own or control all of these don't include them in your
> reverse lookup.
>
>
>
> --
> Best regards,
> Kevin D. Goodknecht Sr. [MVP]
> Hope This Helps
>
> ===================================
> When responding to posts, please "Reply to Group"
> via your newsreader so that others may learn and
> benefit from your issue, to respond directly to
> me remove the nospam. from my email address.
> ===================================
> http://www.lonestaramerica.com/
> http://support.wftx.us/
> http://message.wftx.us/
> ===================================
> Use Outlook Express?... Get OE_Quotefix:
> It will strip signature out and more
> http://home.in.tum.de/~jain/software/oe-quotefix/
> ===================================
> Keep a back up of your OE settings and folders
> with OEBackup:
> http://www.oehelp.com/OEBackup/Default.aspx
> ===================================
>
>