On Mon, Jun 15, 2015 at 9:52 AM, Kurt Buff <[email protected]> wrote: > dnscmd is your friend.
No doubt. What exactly I ask my friend, I don't know ... and what to look for in the returned responses > > On Mon, Jun 15, 2015 at 6:05 AM, Michael Leone <[email protected]> wrote: >> On Mon, Jun 15, 2015 at 8:48 AM, Melvin Backus <[email protected]> >> 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: [email protected] >>> [mailto:[email protected]] On Behalf Of Michael Leone >>> Sent: Monday, June 15, 2015 8:41 AM >>> To: [email protected] >>> 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. >>> >>> >> >> > >
