dnscmd is your friend.
On Mon, Jun 15, 2015 at 6:05 AM, Michael Leone <oozerd...@gmail.com> wrote:
> On Mon, Jun 15, 2015 at 8:48 AM, Melvin Backus <melvin.bac...@byers.com>
> wrote:
>> It sounds like they're getting tombstoned. If they're static IPs try
>> setting the DNS entries statically as well.
>
> Manually entering them into DNS, you mean? I am really trying to avoid
> entering hundreds of IPs statically into DNS ..
>
> And why would they be tombstoning so soon?
>
>
>>
>> --
>> There are 10 kinds of people in the world...
>> those who understand binary and those who don't.
>>
>> -----Original Message-----
>> From: listsadmin@lists.myitforum.com [mailto:listsadmin@lists.myitforum.com]
>> On Behalf Of Michael Leone
>> Sent: Monday, June 15, 2015 8:41 AM
>> To: ntsys...@lists.myitforum.com
>> Subject: [NTSysADM] DNS errors after installing Win2012 R2 DCs
>>
>> I have installed 3 new Win2012 R2 DCs, which will be the replacements for my
>> Win2008 R2 DCs. I have repointed everything to use one of the new Win2012
>> DCs for DNS, rather than the Win2008 R2. And now I am seeing DNS errors.
>>
>> Specifically, hosts will just drop out of DNS. (these are servers with
>> static IPs). An nslookup will fail, and examining the zone will show no
>> record at all for that server (even though that server has been in existence
>> for years). Doing a "ipconifg /registerdns" on the missing server does make
>> it show back up in DNS. But why is it dropping out in the first place?
>>
>> Event log on the DNS server (the server listed first in DNS settings for all
>> my hosts) is showing occasional warnings of event 7062, finding a packet
>> addressed to itself. Can't imagine what is doing that, I have checked and
>> this DNS server doesn't have itself as a forwarder, and is on the notify
>> list of the primary zone (notification is set to all servers on the NS tab,
>> and this one is).
>>
>> So I am not sure what's going on, or what is causing it.
>>
>> Zone is set for "Secure only" dynamic updates, aging is set to scavenge
>> stale records every 7 days (no-refresh and refresh interval) . These should
>> be the defaults (we haven't changed the zone since we installed the Win2012
>> DCs.
>>
>> There is 1 wrinkle - we use SolarWinds, and their IPAM (IP Address
>> Management). That software sets itself to receive zone transfers (so it can
>> track DNS and DHCP), and so it is listed on the "Zone Transfers" tab, as an
>> allowed server. But the "Notify" button is set to automatically notify only
>> servers on the Name Servers tab.
>>
>> I know that there is zone transfer working from the SolarWinds server, I see
>> event log entries showing zone transfer from that server.
>>
>> Anybody use this IPAM?
>>
>> I am going to try changing the notification list to be manual, and include
>> the SolarWinds server.
>>
>>
>
>
